動画を確認画面つきで複数削除できるようにする（ステップ13）

Reviewed-on: #16

.dockerignore

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+.git
+.gitignore
+PROJECT.md
+AGENTS.md
+.env
+.env.*

.env.example

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+DATABASE_URL=
+VIDEO_HOST_DIR=/mnt/nas-tver/tver
+VIDEO_DIR=/videos
+WORKER_CONCURRENCY=1

.gitignore

@@ -4,6 +4,7 @@
 # 秘匿情報（homelab 規約: .env に分離し、コミットしない）
 .env
 .env.*
+!.env.example
 
 # エージェントのローカル設定（端末ごとの権限・agmsg のフック）
 .claude/settings.local.json

AGENTS.md

@@ -6,11 +6,11 @@
 
 ## チーム構成
 
-| エージェント | 種別 | 役割 |
+| エージェント          | 種別          | 役割                                            |
-|---|---|---|
+| --------------- | ----------- | --------------------------------------------- |
-| **`Leader`** | claude-code | 人間の窓口。計画・タスク分解・依頼・検収 |
+| **`Leader`**    | claude-code | 人間の窓口。計画・タスク分解・依頼・検収                          |
-| **`Developer`** | codex | 実作業。実装・テスト実行・修正 |
+| **`Developer`** | codex       | 実作業。実装・テスト作成・修正                               |
-| **`QA`** | codex | テストの品質保証。テスト内容の検証・必要に応じたテストの修正・テスト実施・テスト結果の整理 |
+| **`QA`**        | codex       | テストの品質保証。テスト内容の検証・必要に応じたテストの修正・テスト実施・テスト結果の整理 |
 
 参加は人間の指示を受けてから行う。名前は上の表のとおりにする（`whoami.sh` が出す候補名は他チームのものを含むので使わない）。
 

Dockerfile

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+FROM golang:1.27.1-alpine AS build
+
+WORKDIR /src
+COPY go.mod go.sum ./
+RUN go mod download
+COPY cmd ./cmd
+COPY internal ./internal
+RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /web ./cmd/web
+
+FROM alpine:3.22
+RUN apk add --no-cache ca-certificates tzdata
+WORKDIR /app
+COPY --from=build /web /app/web
+USER 65532:65532
+EXPOSE 8080
+ENTRYPOINT ["/app/web"]

Dockerfile.worker

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+FROM golang:1.27.1-alpine AS build
+
+WORKDIR /src
+COPY go.mod go.sum ./
+RUN go mod download
+COPY cmd ./cmd
+COPY internal ./internal
+RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /worker ./cmd/worker
+
+FROM python:3.13-slim
+ARG YT_DLP_VERSION=2026.08.19
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ca-certificates ffmpeg tzdata \
+    && pip install --no-cache-dir "yt-dlp[default]==${YT_DLP_VERSION}" \
+    && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+COPY --from=build /worker /app/worker
+ENV HOME=/tmp \
+    XDG_CACHE_HOME=/tmp/yt-dlp-cache
+USER 65532:65532
+ENTRYPOINT ["/app/worker"]

PROJECT.md

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+---
+title: tver の現状
+tags:
+  - homelab
+  - tver
+status: 本番稼働中
+---
+
+# tver の現状
+
+> [!info] このファイルの位置づけ
+> tver プロジェクトの現状（決定事項・要件・構成・課題）を積み上げていく。運用規約は [[AGENTS]] を参照。
+
+## 今の状態
+
+- Go の HTTP サーバー、TVer API クライアント、ドラマ・バラエティの新着表示、確認画面つきの動画複数削除、テスト、web・worker コンテナの定義がある
+- **本番稼働中。** dockageのweb・worker、NASのPostgreSQL 17、NFS動画保存を構成し、実動画の取得・再生・Range配信まで確認済み
+- リポジトリ: `https://gitea.kazu634.com/kazu634/tver.git`
+
+## 目的
+
+TVer（`https://tver.jp/`）で公開中の動画情報を取得し、選んだ動画を yt-dlp でダウンロードし、アプリ内で再生する Web アプリを作る。
+
+## 決定事項
+
+| 項目 | 決定 |
+|---|---|
+| TVer 利用規約との関係 | 鑑賞を前提とするダウンロードのため、問題無しと判断（ユーザー判断） |
+| 利用者・公開範囲 | 自分のみ・**LAN 内だけ**。EC2 nginx では公開しない |
+| 保存先 | **NAS（ds923p）の `/volume1/video/tver`**。既存の`anime`・`drama`・`misc`・`personal`・`variety`と分け、admin相当の書き込み範囲を限定する。`/volume1/video`をdockageの`/mnt/nas-tver`へNFSマウントし、`.env`は`VIDEO_HOST_DIR=/mnt/nas-tver/tver`とする |
+| 自動ダウンロード | **作る**（番組を登録し、新しい回を自動でダウンロードする） |
+| 再生 | **アプリの中で再生する** |
+| ダウンロード | yt-dlp を使う |
+| デプロイ | 読み取り専用のGiteaユーザー`tver-deploy`でdockage VMの`/opt/stacks/tver`へcloneし、`docker compose up -d --build`で起動する。Dockgeにも同じスタックが表示される。更新は`git pull --ff-only`後に再ビルドする |
+| 配置用のGit認証 | `tver-deploy`を`tver`の読み取り共同作業者とし、repository読み取りトークンをdockageの権限`600`の専用credentialファイルに保存する。トークンの実値はGitや文書へ残さない |
+| 開発言語 | **Go**（`web`・`worker` とも）。yt-dlp は外部コマンドとして呼び、進捗・結果は yt-dlp の出力から読み取る |
+| DB | **NAS上のtver専用Postgres 17コンテナ**（Giteaと同じ方式）。ユーザー・DB名は`tver`、公開ポートは`15434`。dockageからの到達を確認済み |
+| DB ドライバ | `github.com/jackc/pgx/v5` の `pgxpool` |
+| DB テスト | `github.com/fergusstrange/embedded-postgres` v1.34.0 の Postgres 17 を起動する。Apple Silicon では Rosetta 2 が必要 |
+| 定期実行 | **`worker` 内のスケジューラ** |
+| NAS のマウント | **NFS**。dockageの`/etc/fstab`へ`_netdev,nofail`付きで登録し、DSMでは接続元`192.168.10.155`だけを許可する |
+| NFS 権限 | 読み書き、Squash「すべてのユーザーをadminに割り当てる」、`sys`、非同期オン。DSMのadminアカウントが無効でもUID `65532`から書き込み確認済み |
+| DBの通信制限 | DSMファイアウォールでTCP `15434`を`192.168.10.155`からだけ許可する |
+| DBバックアップ | NASのDSMタスクスケジューラからrootで毎日実行する。`tver-postgres`内の`pg_dump`をgzip圧縮して`/volume1/backups/tver/tver_<YYYYmmdd_HHMMSS>.sql.gz`へ保存し、14日より古い世代を削除する。同名の完成ファイルは上書きせず失敗させる。初回は一時DBへの復元と主要4表の行数一致まで確認する |
+| 保持期間 | **削除は手動のみ**。自動削除はしない |
+| 待ち行列 | **Postgres のテーブルだけで実装する**。専用のキュー基盤は持たない |
+| 定期確認の間隔 | 登録番組の新しい回を **24 時間ごと**に確認する |
+| 定期確認の走査 | worker のスケジューラが起動直後と1時間ごとに、最終確認から24時間以上経過した有効な番組を探す。番組は1件ずつ確認し、間に数秒空ける |
+| 定期確認の予告 | **180秒以下**の回は自動登録せず、既知としてだけ記録する。新着画面の予告判定と同じしきい値を使う |
+| 定期確認の失敗 | `last_checked_at` を更新せず、失敗日時と秘匿値を伏せた短いメッセージを保存する。次の1時間走査で再試行し、成功時にエラーを消す |
+| 登録時の既存回 | **登録の都度**「公開中の回もダウンロードする」かを選ぶ。選ばない場合も公開中の回を既知として記録する |
+| 番組の一時停止 | 登録は残し、自動ダウンロードだけ止める。再開後は停止中に公開された未確認の回も対象にする |
+| 動画のマウント先 | web と worker は `VIDEO_DIR`（既定 `/videos`）に同じ NAS 共有をマウントする。`download_jobs.file_path` は `VIDEO_DIR` からの相対パスを保存する |
+| ファイル名 | `<番組名>/<番組名> <回タイトル> [<エピソードID>].mp4`。禁止文字と制御文字を `_` に置換し、空の要素は `名称未設定`とする。番組名はUTF-8で90バイト、回タイトルは140バイト、サニタイズ後のエピソードIDは64バイトまでとし、ファイル名全体を255バイト以下に収める。64バイトを超えるIDはworkerで`invalid_output`にする。実際のTVer IDは約10文字で、yt-dlpのextractorも英数字として扱うため64バイトを上限とした。既存ファイルは改名せず、新しい保存から適用する |
+| 動画ファイルの境界 | webは`VIDEO_DIR`を`os.OpenRoot`で開き、DBの相対`file_path`を`Root.Open`・`Root.Remove`へ渡す。`VIDEO_DIR`外へのパストラバーサルと外向きシンボリックリンクをOSのディレクトリ境界で拒否する |
+| 同名ファイル | 移動先に同名ファイルがあれば上書きする。ファイル名にエピソード ID が入り `episode_id` は一意なので、同名は同じ回の前回処理の残りに限られる。再実行で同じ結果になることを優先する |
+| ライブラリ一覧 | DBの完了済みジョブから作り、NASのフォルダ走査やファイル存在確認は行わない。番組一覧、番組ごとの回一覧、再生の3段構成にする |
+| 回の自然順 | 回タイトル中の半角・全角数字の並びを数値として比較し、同順位は完了日時の古い順、さらにジョブIDの小さい順にする |
+| 動画の削除 | アプリからだけ行い、削除前にサーバーが描画する確認画面を必ず挟む。ライブラリでは番組単位、番組ページでは選択した回または番組全体を複数削除できる。確認画面で確定したジョブ ID だけを実行するため、確認後に増えた回は削除しない。各回はファイルを先に削除してからジョブ記録を削除し、親の番組フォルダが完全に空なら削除する。ファイルが既に無い場合も記録は削除し、1件の失敗で残りを止めない。登録番組の `known_episodes` は残す |
+| 同時ダウンロード数 | 既定は **1**。`WORKER_CONCURRENCY` で **2まで**増やせる |
+| ダウンロードの再試行 | 自動では再試行しない。失敗を `failed` で残し、画面から手動で再試行する |
+| 実行中の取り消し | web で `running` を `canceled` にし、worker が検知して yt-dlp のプロセスグループを停止する |
+| yt-dlp の作業場所 | `VIDEO_DIR/.incoming/<job id>/` に `%(id)s.%(ext)s` で保存し、検査後に Go が `media.RelativeVideoPath` の場所へ同一ファイルシステム内で移動する。終了状態にかかわらず作業場所を片付ける |
+
+## 要件
+
+### 機能要件
+
+| # | 要件 | 補足 |
+|---|---|---|
+| F1 | ドラマ・バラエティの新着一覧を表示する | 番組名・回タイトル・放送局・長さ・配信終了日時・サムネイル |
+| F2 | 一覧を絞り込む | 予告（「60秒PR」等）を除外できる。ダウンロード済み・待ち行列中を区別して表示する |
+| F3 | 選んだ動画をダウンロードの待ち行列に入れる | 複数選択できる |
+| F4 | ダウンロードの進捗・結果を表示する | 失敗理由（DRM・地域制限・TVer 側の変更による抽出失敗）を区別して表示する |
+| F5 | 同じ回を二重にダウンロードしない | 手動・自動の両方で共通 |
+| F6 | 番組（シリーズ）を登録し、新しい回を自動でダウンロードする | 登録・解除・一覧。定期的に新しい回を確認する。番組URL（`tver.jp/series/…`）から登録でき、登録前に確認画面を表示する |
+| F7 | ダウンロード済みの動画をアプリ内で再生する | シーク（HTTP Range）に対応する |
+| F8 | ダウンロード済みの動画を一覧・削除する | NAS の容量管理のため |
+| F9 | 保存ファイルの名前と置き場所を規則で決める | 例: `<番組名>/<番組名> <回タイトル> [<エピソードID>].mp4` |
+
+### 非機能要件
+
+- **yt-dlp を素早く更新できること。** TVer 側の変更で抽出が壊れやすいので、worker のイメージを再ビルドするだけで更新できるようにする
+- **TVer への負荷を抑える。** 一覧取得はキャッシュし、同時ダウンロード数は 1〜2 に制限する
+- **ブラウザで再生できる形式で保存する。** 映像 H.264 + 音声を MP4 に結合する（ffmpeg が必要）
+- 認証は持たない（LAN 内限定のため）
+- homelab の規約に従う（[[homelab/docs/conventions|運用規約]]）: Compose v2、秘匿情報は `.env`、`TZ=Asia/Tokyo`
+
+## 構成（案）
+
+| コンテナ     | 役割                                                    |
+| -------- | ----------------------------------------------------- |
+| `web`    | UI・API。新着一覧の取得、待ち行列への登録、番組URLを含む番組登録、動画の配信（再生）            |
+| `worker` | Go + yt-dlp + ffmpeg。待ち行列からダウンロードし、登録番組の新しい回を定期的に確認する |
+
+- 現在の `web` は `/healthz`、新着（`/`）、待ち行列（`/queue`）、登録番組（`/subscriptions`）、番組単位のライブラリ（`/library`）、番組ごとの回一覧（`/library/series/{series_id}`）、再生ページ（`/library/{id}`）、Range 対応の MP4 配信（`/videos/{id}`）を提供する
+- ライブラリはDBの完了済みジョブだけを基に、番組一覧から番組ページ、再生ページへ進む。番組ページは完了が新しい順と、回タイトルの半角・全角数字を数値比較する話の順を切り替えられる。再生ページは話の順で前後の回へ移動できる
+- 動画配信はクライアントからジョブ ID だけを受け取り、DB の相対 `file_path` を `os.Root` の `Open`・`Remove` で扱う。絶対パス・`..`・`VIDEO_DIR` 外を指すシンボリックリンクをディレクトリ境界で拒否する。削除はライブラリまたは番組ページの選択、もしくは再生ページの1件削除からサーバー描画の確認画面へ進み、解決済みのジョブ ID を実行画面へ引き継ぐ。実行時は1リクエストにつき動画ルートを1回だけ開き、各回を独立して処理して削除・失敗・対象外の件数を結果画面へ表示する。動画削除後に実ディレクトリの親が空なら削除する。削除後は新着から手動で再登録できるが、登録番組の既知記録は残るため自動再登録しない
+- 新着の「番組を登録」から、公開中の回をダウンロードするか選ぶ。web はサーバー側の新着キャッシュから番組 ID と名前を引き、TVer の season ごとの公開中エピソードを取得する。取得失敗時は登録しない
+- `/subscriptions`では`https://tver.jp/series/<ID>`形式の番組URLを受け付け、検証した番組IDからTVer APIの接続先を組み立てる。登録前に番組名・番組ID・公開中の回数を確認し、登録時にもサーバー側で番組名と公開中の回を取り直す。クライアントから番組名は受け取らない
+- 登録と公開中の回の既知記録・任意の待ち行列投入は1トランザクションで行い、登録時刻を最終確認日時に設定する。`known_episodes` は番組解除時に連動して削除する。一時停止中は投入を拒否する
+- worker のスケジューラは起動直後と1時間ごとに、`enabled` かつ最終確認から24時間以上の番組を抽出する。TVer から公開中の回を順次取得し、未確認の180秒超の回だけを `source=subscription` で投入する。180秒以下も既知にし、成功時の最終確認更新・エラー消去まで1トランザクションで行う
+- TVer の番組取得に失敗した場合は最終確認日時を変えず、失敗日時と伏字済みの短いメッセージを `subscriptions` に記録して画面に表示する。番組間には3秒空け、SIGTERM では取得中または待機中の確認を中断する
+- 新着の登録ボタンはエピソード ID とジャンルだけを送る。web が有効な新着キャッシュから番組情報を引き、`episode_id` の一意制約で重複登録を防ぐ。新着一覧はジョブ状態を一括取得し、失敗・取り消しには再試行を表示する
+- 待ち行列は実行中・待機中・失敗・取り消し・完了を状態別に直近50件ずつ表示する。段階別の進捗と失敗理由を表示し、待機中の取り消しと失敗・取り消しの再試行ができる。実行中または待機中のジョブがある間だけ5秒ごとに一覧を更新する
+- 実行中のジョブにも取り消しボタンを表示する。worker は DB の `canceled` を定期確認し、yt-dlp をプロセスグループごと停止する
+- 新着はジャンルごとにメモリへ 10 分間キャッシュする。キャッシュ中は TVer セッションの再発行と一覧の再取得を行わない。TVer の取得に失敗した場合、一覧の場所にエラーを表示して詳細をログへ記録する
+- 「予告を隠す」は既定でオンとし、180 秒以下の件を非表示にする。長さは秒から分へ切り上げて表示し、配信終了日時は Asia/Tokyo で表示する。ジャンルと予告表示の状態は URL に残す
+- 画面は `html/template` と htmx 2.0.11 を使い、htmx は Go の `embed` から `/static/` でローカル配信する
+- `compose.yaml` は web と worker を定義する。web は dockage VM の LAN アドレス `192.168.10.155:8080` で公開し、待ち受けは `WEB_ADDR` で変更できる。両方へ `DATABASE_URL` と同じ動画ボリュームを渡し、worker の並行数は `WORKER_CONCURRENCY`（既定1、最大2）で指定する
+- NAS用の`deploy/nas/tver-db/compose.yaml`は`postgres:17`を`15434:5432`で公開し、`/volume1/docker/tver-db/pgdata`へ保存する。パスワードは同ディレクトリのGit管理外`.env`から注入する
+- NAS用の`backup-db.sh`はコンテナ内の`pg_dump`を検査後にgzip圧縮し、同一ディレクトリ内のハードリンクで完成ファイルを上書きせず公開する。`restore-test.sh`は最新ダンプを一時DBへ復元して`download_jobs`・`subscriptions`・`known_episodes`・`schema_migrations`の行数を本番DBと比較する。一時DBはEXIT trapで必ず削除し、復元SQLの通常出力はログへ記録しない
+- 本番配置と更新の手順は[[docs/deploy|tver 本番配置手順]]にまとめる。dockageでは`/volume1/video`を`/mnt/nas-tver`へNFSマウントし、その配下の`tver`だけをコンテナ内の`/videos`へ渡す
+- Giteaは匿名閲覧とSSHを無効にしているため、dockageのclone・pullは読み取り専用`tver-deploy`のrepository読み取りトークンを使う。Gitのcredential helperはGiteaのHTTPS URLに限定する
+- DB は NAS 上に tver 専用 Postgres 17 コンテナを置く。`internal/store` の埋め込み SQL を `schema_migrations` で管理し、`pg_advisory_lock` で複数プロセスからの同時適用を直列化する。web は起動時に `pgxpool` で接続してマイグレーションを適用する
+- `download_jobs` は `episode_id` を一意にして二重登録を防ぎ、ジョブの状態・段階別進捗・結果を持つ。`subscriptions` はシリーズ単位の登録と最終確認日時を持つ。worker からの操作と画面用の一覧取得を `internal/store` にまとめる
+- worker は `yt-dlp[default]` と ffmpeg を外部コマンドとして使い、映像・音声・結合・移動の段階別進捗を1秒間隔に間引いて保存する。独立した heartbeat を5秒ごとに更新し、正確な全体パーセントは保存しない。`after_move:filepath` で実パスを取り、ffprobe で H.264 と AAC の MP4 を確認して成功とする。失敗は取り消し、DRM、地域制限、ネットワーク、配信不可、抽出失敗、出力不正、その他の順に扱い、自動再試行しない
+- worker は起動時にマイグレーションと停止中ジョブの `RequeueStale` を行い、登録番組の確認も直ちに1回行う。SIGTERM では yt-dlp と確認処理を止め、担当中ジョブを `queued` に戻してから終了する。`Dockerfile.worker` は yt-dlp 2026.08.19 を ARG で固定し、ffmpeg・ffprobe とともに非 root で実行する
+- 保存先の NAS 共有フォルダは dockage VM に NFS でマウントし、`worker`（書き込み）と `web`（読み取り・削除）に同じ `VIDEO_DIR` でバインドマウントする
+
+## 外部とのつながり
+
+| 相手 | 用途 | 備考 |
+|---|---|---|
+| TVer `platform-api.tver.jp` | 新着一覧（`/service/api/v1/callNewerDetail/{drama\|variety}`）・番組名（`/service/api/v2/callSeries/{series_id}`）・番組のエピソード一覧 | **非公開 API**。セッションは `/v2/api/platform_users/browser/create` で発行する（yt-dlp と同じ方式） |
+| TVer `service-api.tver.jp` | 番組の season 一覧（`/api/v1/callSeriesSeasons/{series_id}`） | **非公開 API**。[yt-dlp の TVer extractor](https://github.com/yt-dlp/yt-dlp/blob/master/yt_dlp/extractor/tver.py) と同じ取得方式 |
+| yt-dlp | ダウンロード | TVer extractor を使う |
+| Gitea `gitea.kazu634.com` | 配置元 | 匿名cloneとSSHは使えない。`tver-deploy`のHTTPSトークンでclone・pullする |
+| NAS ds923p（NFS） | 動画の保存先 | `/volume1/video`をdockageの`/mnt/nas-tver`へNFSv3でマウントし、アプリは`tver`サブフォルダを使う。DSMのNFS権限は`192.168.10.155`のみ |
+| NAS ds923p（Postgres 17） | DB | tver専用コンテナを`15434:5432`で公開し、DSMファイアウォールで`192.168.10.155`のみ許可する。dockageから接続確認済み |
+
+## 確認済みの事実
+
+- 新着 API は `drama` / `variety` それぞれ 100 件を返す。予告動画も含まれる。各件に `id`・`seriesID`・`seriesTitle`・`title`・`broadcasterName`・`duration`・`endAt`・`thumbnailPath` がある [実機] 2026-10-03 確認
+- 番組 `sr0lhdrtdb` の `callSeriesSeasons` は `result.contents` に `type=season` の1件（`ss3i6njoq3`）を返し、`callSeasonEpisodes` は `type=episode` の5件を返した。エピソードには新着と同じ `id`・`seriesID`・`seriesTitle`・`title`・`broadcasterName`・`duration`・`endAt`・`thumbnailPath` が含まれる。他の番組での season 数や一覧件数は未確認 [実機] 2026-10-03 確認
+- dockage VM から TVer API に到達でき（HTTP 200）、送信元は日本と判定される [実機] 2026-10-03 確認
+- yt-dlp 2026.08.19 で TVer のエピソードを抽出できる（`--simulate`）。映像（H.264 / `avc1`）と音声が別ストリームで、結合に ffmpeg が要る。1080p・約 50 分で約 1.2GiB [実機] 2026-10-03 確認
+- 5 分の `epq432nee4` を yt-dlp 2026.08.19 で取得した。`--newline` と `--progress-template` の 1 行 1 JSON は Go の外部プロセスから逐次読める。ただし `uvx yt-dlp` のみで `pycryptodomex` が無いと AES-128 HLS を ffmpeg に委譲し、途中のダウンロード進捗が出なかった。`yt-dlp[default]` に含まれる `pycryptodomex` を加えた試行では途中の進捗が出た [実機] 2026-10-03 確認
+- 別ストリームの映像と音声は進捗が個別に始まり、`format_id` で区別できる。結合処理は `postprocess:` の出力で検知でき、`--print after_move:filepath` で実ファイルのパスを取得した。完成した MP4 は 24,613,787 バイトで、ffprobe では H.264 640×360 と AAC LC だった。初回取得は約 10 秒だった [実機] 2026-10-03 確認
+- SIGTERM で止めると `.part` と `.ytdl` が残り、再実行で 437,066 バイトから 438,090 バイトへ続きから取得できた [実機] 2026-10-03 確認
+- 到達不能のプロキシ経由の通信失敗と存在しないエピソードは、ともに yt-dlp の終了コード 1 だった。stderr の文言で分類が必要。DRM・地域制限の失敗文言と終了コードは実測していない（yt-dlp の extractor ソースのみ確認） [実機] 2026-10-03 確認
+- yt-dlp の TVer extractor は日本のみ（`_GEO_COUNTRIES = ['JP']`）。DRM 付きの作品は取得できない [公式] https://github.com/yt-dlp/yt-dlp/blob/master/yt_dlp/extractor/tver.py (取得日: 2026-10-03)
+- DSMのNFS権限を接続元`192.168.10.155`、読み書き、全ユーザーをadminへ割り当て、`sys`、非同期オンにすると、dockageからNFSv3で`/volume1/video`をマウントできた。設定直後の1回目は`access denied`、直後の2回目は成功したため、権限の反映待ちと考えられる [実機] 2026-10-04 確認
+- DSMのadminアカウントが無効でも、UID `65532`のコンテナから`tver`サブフォルダの作成・書き込み・読み込み・rename・削除に成功した。NAS上の所有者はUID `1024`・GID `100`。`/mnt/nas-tver/tver`は作成済み [実機] 2026-10-04 確認
+- NFSマウントのファイル名上限は`namlen=255` [実機] 2026-10-04 確認
+- Giteaは`REQUIRE_SIGNIN_VIEW = true`・`DISABLE_SSH = true`で、匿名HTTPSの`info/refs`はHTTP `401`だった。読み取り専用ユーザー`tver-deploy`とrepository読み取りトークンで`/opt/stacks/tver`へのcloneに成功した [実機] 2026-10-04 確認
+- dockageで`docker compose up -d --build`を実行してweb・workerを起動でき、Dockgeにも`tver`スタックとして表示された。DSMファイアウォール設定後、dockageからNASのTCP `15434`へ到達できた [実機] 2026-10-04 確認
+- 本番の`/healthz`はHTTP `200`、新着バラエティは98件だった。4分の本編`ep5hcgopp2`は登録から20秒以内に完了し、92,340,468バイトの1080p H.264/AAC MP4をNASへ保存した。所有者はUID `1024`・GID `100`、`.incoming`は空で、`/library`とHTTP Range `206`も確認した [実機] 2026-10-04 確認
+- NASは番組フォルダ内に所有者UID `0`の`@eaDir`を作る。ライブラリ一覧はDBから作るため、アプリへの影響はない [実機] 2026-10-04 確認
+- `callNewerDetail/drama`は毎回100件を返し、応答に続きや総件数を示す項目はなかった。`result.contents`は`type=newer`で、`content`は`id`・`version`・`title`のみ。`page=2`・`offset=100`・`limit=200`を付けても先頭・末尾IDが同じ100件となり、パラメータは無視された。100件を超えて取得する手段は見つからなかったが、非公開APIのため不可能とは断定しない。新着一覧は直近100件までとなる一方、登録番組の自動確認は番組ごとの`callSeriesSeasons`→`callSeasonEpisodes`を使うため、新着から外れた回も取りこぼさない [実機] 2026-10-04 確認
+- dockage上の使い捨て`postgres:17`コンテナへマイグレーション001〜003を適用してテスト用の行を投入し、`backup-db.sh`と`restore-test.sh`を実行した。gzip圧縮・権限600のダンプ作成、同じ`STAMP`での2回目が`ln`の失敗で非0終了して既存ダンプを保持すること、主要4表の行数一致、一時DBの削除、ログに`psql`の標準出力が残らないことを確認した [実機] 2026-10-04 確認
+- NASの`/volume1/docker/tver-db/`へスクリプトを配置し、DSMタスクスケジューラのrootタスクから実行して、`/volume1/backups/tver/`へ`tver_20261004_182838.sql.gz`（2,286バイト）と`tver_20261004_183256.sql.gz`（2,289バイト）を作成した。ダンプはroot所有・権限600で、バックアップディレクトリはroot所有・`drwxr-xr-x`だった。`restore-test.sh`を`sudo`で実行し、`download_jobs` 1件・`subscriptions` 1件・`known_episodes` 1件・`schema_migrations` 3件の一致、ログへの結果記録、一時DBの削除を確認した。一般ユーザーではroot所有のログへ書き込めず失敗する [実機] 2026-10-04 確認
+- DSMのACLで全員書き込み可だった`/volume1/docker`配下について、`/volume1/docker/tver-db`を`chmod 755`、`backup-db.sh`と`restore-test.sh`を`chmod 700`にしてACLが外れたことを確認した。変更後も本番アプリの`/queue`と`/subscriptions`はHTTP `200`でDBを読み取れた。PostgreSQLコンテナ再起動後の動作は未確認 [実機] 2026-10-04 確認
+- platform-apiの`v2/callSeries/{series_id}`は`result.content.content.title`に番組名を返し、存在しないIDにはHTTP `404`を返した。`sr8a864g0w`では番組名がエピソード側の`seriesTitle`と一致した。`v1/callEpisode/{episode_id}`は`seriesID`・`seriesTitle`を返した（今回は使わない） [実機] 2026-10-07 確認
+
+## 課題
+
+- 登録済みのDSM日次バックアップタスクが翌日以降に自動実行され、新しいダンプを作ることを確認する [要確認]
+- DRM・地域制限の実例探しはTVerへの大量アクセスになるため行わず、運用中に観測する。workerは失敗時の`error_message`をDBへ保存し、既知の文言に一致しない失敗は`unknown`にする。実例が出た時点で分類を見直す
+
+## 経緯
+
+- ステップ13で、ライブラリの番組単位削除、番組ページの回選択・番組全体削除、再生ページの1件削除を、すべてサーバー描画の確認画面を経由する方式に統一した。確認時に解決した最大1,000件のジョブ ID だけを実行し、途中の失敗後も残りを処理して結果を表示する
+- ステップ12でライブラリを番組一覧、番組ページ、再生ページの3段構成にした。番組単位の集計と登録状態はDBから取得し、番組ページの話の順と再生ページの前後移動には同じ自然順を使う。動画削除後は空になった番組フォルダだけを`os.Root`経由で削除する
+
+## 確かめ方
+
+- Codex では `go test -count=1 ./...` を環境変数の前置なしで実行する。`go test` を許可する rules に一致させ、Postgres の共有メモリ作成に必要な権限で実行するため。初回のモジュール取得にはネットワーク接続が必要
+- web を起動するには `.env.example` を参考に、Git 管理外の `.env` に実際の `DATABASE_URL` と `VIDEO_HOST_DIR` を設定する。`VIDEO_DIR` の既定は `/videos`。DB 接続がある環境では起動時にマイグレーションが適用される
+- DB テストは `embedded-postgres` v1.34.0 が Postgres 17 を一度起動し、テストごとに独立した DB を作る。バイナリキャッシュ、実行ファイル、データは `/private/tmp` 配下に置く。Apple Silicon での実行には Rosetta 2 の導入が必要
+- TVer 応答のテストは `internal/tver/testdata/newer_drama.json`（2026-10-03 の実応答を 3 件に縮小）と `httptest` を使い、テストから本物の TVer にはアクセスしない
+- 番組一覧の応答は `internal/tver/testdata/series_seasons.json` と `season_episodes.json`（2026-10-03 の実応答を各1件に縮小）に記録した。テストは `httptest` を使い、実 API にアクセスしない
+- 番組情報の応答は`internal/tver/testdata/series.json`（2026-10-07の実応答を番組情報だけに縮小）に記録した。番組URLは純関数でscheme・host・path・IDを検証し、TVerクライアントのテストは`httptest`だけへ接続する
+- 新着画面のテストは偽物の TVer クライアント・store と差し替え可能な時計を使い、表示項目、絞り込みの境界、10 分キャッシュ、取得失敗、JST 表示、登録・状態表示・待ち行列の操作を確認する
+- ライブラリのテストは番組単位の集計、番組別・ID指定の完了済み回取得、3画面、半角・全角数字の自然順、前後移動を確認する。一時ディレクトリの小さな動画を使い、Rangeの206・範囲外の416、`os.Root`による相対パスとシンボリックリンクの拒否、404、サーバー確認画面の入力検証・重複除去・HTMLエスケープ、複数削除の部分失敗・対象外・確認後の新着保持、ファイル削除後の記録削除、空の番組フォルダだけを削除することも確認する。共有のファイル名規則は`internal/media`で90・140・255バイトの境界とUTF-8の完全性をテストする
+- worker のテストは `internal/worker/testdata` の偽 yt-dlp・ffprobe を使い、本物の TVer へ接続せずに正常完了、失敗分類、取消、終了時の待機復帰、進捗の間引き、heartbeat、出力検査、移動先、作業場所の片付けを確認する
+- 登録番組の定期確認は偽の TVer クライアントと差し替え可能な時計・タイマーを使い、24時間の境界、順次確認、1時間走査、失敗記録、予告の既知化、終了時の中断を確認する。store の抽出・既知化・投入・日時更新・エラー消去は embedded Postgres 17 で確認する
+- NAS用Composeは`deploy/nas/tver-db/compose.yaml`をYAMLパーサーで読み、`services.postgres`、環境変数、ポート、保存先、healthcheckを確認する。Dockerが使える環境では`docker compose --env-file deploy/nas/tver-db/.env.example -f deploy/nas/tver-db/compose.yaml config`でも展開結果を確認する
+- DBバックアップスクリプトは`deploy/nas/tver-db/scripts_test.go`からPATH上の偽dockerを使って実行し、正常な圧縮、同名・同時実行時の上書き防止、空ダンプと`pg_dump`失敗、14日の世代境界、復元失敗時の一時DB削除、主要表の行数不一致を確認する。NAS実機では[[docs/deploy#5. PostgreSQLをバックアップする|配置手順]]に従って手動バックアップと復元確認を行う
+- 本番の確認手順は[[docs/deploy|tver 本番配置手順]]に従い、NFS上の`/mnt/nas-tver/tver`をUID `65532`で読み書き・rename・削除できること、DBがhealthyであること、webの`/healthz`、実動画の保存・再生・シークを確認する
+- `env GOPATH=/private/tmp/tver-gopath GOCACHE=/private/tmp/tver-go-cache GOMODCACHE=/private/tmp/tver-go-modcache GOPROXY=off go vet ./...` で静的解析する
+- `DATABASE_URL`、`VIDEO_DIR`、`WEB_ADDR=127.0.0.1:18080` を設定して `go run ./cmd/web` で web を起動できる。worker は同じ `DATABASE_URL` と `VIDEO_DIR` を設定して `go run ./cmd/worker` で起動する。worker の実行は TVer への実アクセスを伴うため手動確認は少数回に留める

cmd/web/main.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+	_ "time/tzdata"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+	"gitea.kazu634.com/kazu634/tver/internal/web"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+func main() {
+	pool, err := openDatabase(context.Background(), os.Getenv("DATABASE_URL"), pgxpool.New, store.Migrate)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer pool.Close()
+	address := os.Getenv("WEB_ADDR")
+	if address == "" {
+		address = ":8080"
+	}
+	client, err := tver.NewClient("", nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+	videoDir := os.Getenv("VIDEO_DIR")
+	if videoDir == "" {
+		videoDir = "/videos"
+	}
+	server := &http.Server{
+		Addr:              address,
+		Handler:           web.NewHandler(client, store.New(pool), videoDir, time.Now, log.Default()),
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+	log.Printf("web listening on %s", address)
+	log.Fatal(server.ListenAndServe())
+}
+
+func openDatabase(ctx context.Context, databaseURL string,
+	connect func(context.Context, string) (*pgxpool.Pool, error),
+	migrate func(context.Context, *pgxpool.Pool) error) (*pgxpool.Pool, error) {
+	if strings.TrimSpace(databaseURL) == "" {
+		return nil, errors.New("DATABASE_URL が設定されていません")
+	}
+	pool, err := connect(ctx, databaseURL)
+	if err != nil {
+		return nil, errors.New("DATABASE_URL から接続プールを作成できません")
+	}
+	if err := migrate(ctx, pool); err != nil {
+		pool.Close()
+		return nil, fmt.Errorf("DB マイグレーションに失敗: %w", err)
+	}
+	return pool, nil
+}

cmd/web/main_test.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"testing"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+func TestOpenDatabaseRequiresURLAndRunsMigration(t *testing.T) {
+	ctx := context.Background()
+	connectCalls, migrateCalls := 0, 0
+	connect := func(_ context.Context, url string) (*pgxpool.Pool, error) {
+		connectCalls++
+		if url != "postgres://test:secret@localhost/test" {
+			t.Errorf("URL = %q", url)
+		}
+		return pgxpool.New(ctx, url)
+	}
+	migrate := func(_ context.Context, _ *pgxpool.Pool) error {
+		migrateCalls++
+		return nil
+	}
+	if _, err := openDatabase(ctx, " ", connect, migrate); err == nil || !strings.Contains(err.Error(), "DATABASE_URL") {
+		t.Fatalf("未設定 URL のエラー: %v", err)
+	}
+	if connectCalls != 0 || migrateCalls != 0 {
+		t.Fatalf("未設定でも接続・移行された: %d %d", connectCalls, migrateCalls)
+	}
+	pool, err := openDatabase(ctx, "postgres://test:secret@localhost/test", connect, migrate)
+	if err != nil || pool == nil {
+		t.Fatalf("DB 初期化: %v", err)
+	}
+	pool.Close()
+	if connectCalls != 1 || migrateCalls != 1 {
+		t.Fatalf("接続・移行回数: %d %d", connectCalls, migrateCalls)
+	}
+}
+
+func TestOpenDatabaseReportsMigrationFailure(t *testing.T) {
+	ctx := context.Background()
+	pool, err := openDatabase(ctx, "postgres://test:secret@localhost/test", pgxpool.New,
+		func(context.Context, *pgxpool.Pool) error { return errors.New("migration failed") })
+	if pool != nil || err == nil || !strings.Contains(err.Error(), "migration failed") {
+		t.Fatalf("移行失敗: pool=%v err=%v", pool, err)
+	}
+}
+
+func TestOpenDatabaseReportsConnectionFailureWithoutLeakingURL(t *testing.T) {
+	migrateCalled := false
+	pool, err := openDatabase(context.Background(), "postgres://user:secret@localhost/test",
+		func(context.Context, string) (*pgxpool.Pool, error) {
+			return nil, errors.New("postgres://user:secret@localhost/test: connection refused")
+		},
+		func(context.Context, *pgxpool.Pool) error {
+			migrateCalled = true
+			return nil
+		})
+	if pool != nil || err == nil || strings.Contains(err.Error(), "secret") || migrateCalled {
+		t.Fatalf("接続失敗: pool=%v err=%v migrateCalled=%v", pool, err, migrateCalled)
+	}
+}
+
+func TestOpenDatabaseDoesNotExposeInvalidURL(t *testing.T) {
+	_, err := openDatabase(context.Background(), "postgres://user:secret@%", pgxpool.New,
+		func(context.Context, *pgxpool.Pool) error { t.Fatal("移行してはいけない"); return nil })
+	if err == nil || strings.Contains(err.Error(), "secret") {
+		t.Fatalf("接続 URL の秘匿: %v", err)
+	}
+}

cmd/worker/main.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+	"strconv"
+	"strings"
+	"syscall"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+	workerpkg "gitea.kazu634.com/kazu634/tver/internal/worker"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+const staleAfter = 30 * time.Second
+
+func main() {
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+	config, err := loadConfig(os.Getenv)
+	if err != nil {
+		log.Fatal(err)
+	}
+	pool, err := initializeDatabase(ctx, os.Getenv("DATABASE_URL"), time.Now(), pgxpool.New,
+		store.Migrate, func(ctx context.Context, pool *pgxpool.Pool, cutoff time.Time) (int64, error) {
+			return store.New(pool).RequeueStale(ctx, cutoff)
+		})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer pool.Close()
+	jobStore := store.New(pool)
+	runner, err := workerpkg.New(jobStore, config, log.Default())
+	if err != nil {
+		log.Fatal(err)
+	}
+	tverClient, err := tver.NewClient("", nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+	scheduler, err := workerpkg.NewSubscriptionScheduler(jobStore, tverClient,
+		workerpkg.SubscriptionSchedulerConfig{PreviewMaxSeconds: tver.PreviewMaxSeconds}, log.Default())
+	if err != nil {
+		log.Fatal(err)
+	}
+	schedulerDone := make(chan struct{})
+	go func() {
+		defer close(schedulerDone)
+		scheduler.Run(ctx)
+	}()
+	log.Printf("worker started (concurrency=%d)", config.Concurrency)
+	if err := runner.Run(ctx); err != nil {
+		log.Fatal(err)
+	}
+	<-schedulerDone
+	log.Print("worker stopped")
+}
+
+func loadConfig(getenv func(string) string) (workerpkg.Config, error) {
+	concurrency := 1
+	if value := strings.TrimSpace(getenv("WORKER_CONCURRENCY")); value != "" {
+		parsed, err := strconv.Atoi(value)
+		if err != nil || parsed < 1 || parsed > 2 {
+			return workerpkg.Config{}, errors.New("WORKER_CONCURRENCY は 1 または 2 を指定してください")
+		}
+		concurrency = parsed
+	}
+	return workerpkg.Config{VideoDir: getenv("VIDEO_DIR"), YTDLPPath: getenv("YT_DLP_PATH"),
+		FFprobePath: getenv("FFPROBE_PATH"), Concurrency: concurrency}, nil
+}
+
+func initializeDatabase(ctx context.Context, databaseURL string, now time.Time,
+	connect func(context.Context, string) (*pgxpool.Pool, error),
+	migrate func(context.Context, *pgxpool.Pool) error,
+	requeue func(context.Context, *pgxpool.Pool, time.Time) (int64, error),
+) (*pgxpool.Pool, error) {
+	if strings.TrimSpace(databaseURL) == "" {
+		return nil, errors.New("DATABASE_URL が設定されていません")
+	}
+	pool, err := connect(ctx, databaseURL)
+	if err != nil {
+		return nil, errors.New("DATABASE_URL から接続プールを作成できません")
+	}
+	if err := migrate(ctx, pool); err != nil {
+		pool.Close()
+		return nil, fmt.Errorf("DB マイグレーションに失敗: %w", err)
+	}
+	if _, err := requeue(ctx, pool, now.Add(-staleAfter)); err != nil {
+		pool.Close()
+		return nil, fmt.Errorf("停止中ジョブの復帰に失敗: %w", err)
+	}
+	return pool, nil
+}

cmd/worker/main_test.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+func TestLoadConfigConcurrency(t *testing.T) {
+	values := map[string]string{"VIDEO_DIR": "/media", "YT_DLP_PATH": "/bin/downloader", "FFPROBE_PATH": "/bin/probe"}
+	getenv := func(key string) string { return values[key] }
+	config, err := loadConfig(getenv)
+	if err != nil || config.Concurrency != 1 || config.VideoDir != "/media" || config.YTDLPPath != "/bin/downloader" || config.FFprobePath != "/bin/probe" {
+		t.Fatalf("既定設定: %+v %v", config, err)
+	}
+	values["WORKER_CONCURRENCY"] = "2"
+	config, err = loadConfig(getenv)
+	if err != nil || config.Concurrency != 2 {
+		t.Fatalf("並行数2: %+v %v", config, err)
+	}
+	for _, invalid := range []string{"0", "3", "bad"} {
+		values["WORKER_CONCURRENCY"] = invalid
+		if _, err := loadConfig(getenv); err == nil {
+			t.Errorf("不正な並行数 %q を許した", invalid)
+		}
+	}
+}
+
+func TestInitializeDatabaseRequiresURLMigratesAndRequeues(t *testing.T) {
+	ctx := context.Background()
+	now := time.Date(2026, 10, 3, 12, 0, 0, 0, time.UTC)
+	connectCalls, migrateCalls, requeueCalls := 0, 0, 0
+	connect := func(_ context.Context, url string) (*pgxpool.Pool, error) {
+		connectCalls++
+		if url != "postgres://test:secret@localhost/test" {
+			t.Errorf("URL=%q", url)
+		}
+		return pgxpool.New(ctx, url)
+	}
+	migrate := func(context.Context, *pgxpool.Pool) error { migrateCalls++; return nil }
+	requeue := func(_ context.Context, _ *pgxpool.Pool, cutoff time.Time) (int64, error) {
+		requeueCalls++
+		if want := now.Add(-staleAfter); !cutoff.Equal(want) {
+			t.Errorf("cutoff=%v want=%v", cutoff, want)
+		}
+		return 2, nil
+	}
+	if _, err := initializeDatabase(ctx, " ", now, connect, migrate, requeue); err == nil || !strings.Contains(err.Error(), "DATABASE_URL") {
+		t.Fatalf("未設定 URL: %v", err)
+	}
+	if connectCalls != 0 || migrateCalls != 0 || requeueCalls != 0 {
+		t.Fatalf("未設定時の呼び出し: %d %d %d", connectCalls, migrateCalls, requeueCalls)
+	}
+	pool, err := initializeDatabase(ctx, "postgres://test:secret@localhost/test", now, connect, migrate, requeue)
+	if err != nil || pool == nil {
+		t.Fatalf("初期化: %v", err)
+	}
+	pool.Close()
+	if connectCalls != 1 || migrateCalls != 1 || requeueCalls != 1 {
+		t.Fatalf("呼び出し回数: %d %d %d", connectCalls, migrateCalls, requeueCalls)
+	}
+}
+
+func TestInitializeDatabaseStopsOnMigrationOrRequeueFailure(t *testing.T) {
+	ctx := context.Background()
+	connect := func(context.Context, string) (*pgxpool.Pool, error) {
+		return pgxpool.New(ctx, "postgres://localhost/test")
+	}
+	requeueCalled := false
+	pool, err := initializeDatabase(ctx, "postgres://localhost/test", time.Now(), connect,
+		func(context.Context, *pgxpool.Pool) error { return errors.New("migration failed") },
+		func(context.Context, *pgxpool.Pool, time.Time) (int64, error) { requeueCalled = true; return 0, nil })
+	if pool != nil || err == nil || !strings.Contains(err.Error(), "migration failed") || requeueCalled {
+		t.Fatalf("migration failure: pool=%v err=%v requeue=%v", pool, err, requeueCalled)
+	}
+	pool, err = initializeDatabase(ctx, "postgres://localhost/test", time.Now(), connect,
+		func(context.Context, *pgxpool.Pool) error { return nil },
+		func(context.Context, *pgxpool.Pool, time.Time) (int64, error) { return 0, errors.New("requeue failed") })
+	if pool != nil || err == nil || !strings.Contains(err.Error(), "requeue failed") {
+		t.Fatalf("requeue failure: pool=%v err=%v", pool, err)
+	}
+}
+
+func TestInitializeDatabaseDoesNotLeakURL(t *testing.T) {
+	_, err := initializeDatabase(context.Background(), "postgres://user:secret@localhost/test", time.Now(),
+		func(context.Context, string) (*pgxpool.Pool, error) {
+			return nil, errors.New("postgres://user:secret@localhost/test refused")
+		}, func(context.Context, *pgxpool.Pool) error { return nil },
+		func(context.Context, *pgxpool.Pool, time.Time) (int64, error) { return 0, nil })
+	if err == nil || strings.Contains(err.Error(), "secret") {
+		t.Fatalf("URL 漏えい: %v", err)
+	}
+}

compose.yaml

@@ -0,0 +1,25 @@
+services:
+  web:
+    build: .
+    env_file: .env
+    environment:
+      TZ: Asia/Tokyo
+      WEB_ADDR: ":8080"
+      VIDEO_DIR: "${VIDEO_DIR:-/videos}"
+    volumes:
+      - "${VIDEO_HOST_DIR:?VIDEO_HOST_DIR must be set}:${VIDEO_DIR:-/videos}"
+    ports:
+      - "192.168.10.155:8080:8080"
+    restart: unless-stopped
+  worker:
+    build:
+      context: .
+      dockerfile: Dockerfile.worker
+    env_file: .env
+    environment:
+      TZ: Asia/Tokyo
+      VIDEO_DIR: "${VIDEO_DIR:-/videos}"
+      WORKER_CONCURRENCY: "${WORKER_CONCURRENCY:-1}"
+    volumes:
+      - "${VIDEO_HOST_DIR:?VIDEO_HOST_DIR must be set}:${VIDEO_DIR:-/videos}"
+    restart: unless-stopped

deploy/nas/tver-db/.env.example

@@ -0,0 +1 @@
+POSTGRES_PASSWORD=

deploy/nas/tver-db/backup-db.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+# tver DBバックアップ（Synology ds923p / DSMタスクスケジューラで日次実行）
+#
+# 配置先: /volume1/docker/tver-db/backup-db.sh
+# DSM設定: コントロールパネル → タスクスケジューラ → 作成
+#          → スケジュールされたタスク → ユーザー定義のスクリプト
+#          ユーザーはroot、実行周期は毎日とする。
+# 実行コマンド: bash /volume1/docker/tver-db/backup-db.sh
+#
+# コンテナ内のpg_dumpを使い、サーバーとクライアントのバージョンを合わせる。
+# PostgreSQLのローカル接続を使うため、DBパスワードはスクリプトへ書かない。
+
+set -euo pipefail
+
+BACKUP_DIR="${BACKUP_DIR:-/volume1/backups/tver}"
+KEEP_DAYS="${KEEP_DAYS:-14}"
+CONTAINER="${CONTAINER:-tver-postgres}"
+DB_USER="${DB_USER:-tver}"
+DB_NAME="${DB_NAME:-tver}"
+DOCKER="${DOCKER:-$(command -v docker || printf '/usr/local/bin/docker')}"
+STAMP="${STAMP:-$(date +%Y%m%d_%H%M%S)}"
+OUT="${BACKUP_DIR}/tver_${STAMP}.sql.gz"
+RAW_TMP="${BACKUP_DIR}/.tver_${STAMP}.$$.sql"
+GZ_TMP="${OUT}.tmp.$$"
+
+case "$KEEP_DAYS" in
+  ''|*[!0-9]*)
+    echo "ERROR: KEEP_DAYS must be a non-negative integer: $KEEP_DAYS" >&2
+    exit 1
+    ;;
+esac
+
+mkdir -p "$BACKUP_DIR"
+umask 077
+
+cleanup() {
+  rm -f "$RAW_TMP" "$GZ_TMP"
+}
+trap cleanup EXIT
+
+# 先に非圧縮の一時ファイルへ出し、pg_dump成功と空でないことを確認する。
+"$DOCKER" exec "$CONTAINER" pg_dump -U "$DB_USER" -d "$DB_NAME" > "$RAW_TMP"
+if [[ ! -s "$RAW_TMP" ]]; then
+  echo "ERROR: dump is empty" >&2
+  exit 1
+fi
+
+gzip -9 -c "$RAW_TMP" > "$GZ_TMP"
+if [[ ! -s "$GZ_TMP" ]]; then
+  echo "ERROR: compressed dump is empty" >&2
+  exit 1
+fi
+# 完成ファイルは上書きしない。同名が同時に作られても、ハードリンクの
+# 作成に成功した一方だけを公開する。一時ファイルは同じディレクトリに
+# あるため同一ファイルシステム内でリンクできる。
+if ! ln "$GZ_TMP" "$OUT"; then
+  echo "ERROR: backup already exists or could not be published: $OUT" >&2
+  exit 1
+fi
+rm -f "$GZ_TMP" "$RAW_TMP"
+
+# KEEP_DAYS日より古い完了済みバックアップだけを削除する。
+find "$BACKUP_DIR" -name 'tver_*.sql.gz' -type f -mtime "+$KEEP_DAYS" -delete
+
+SIZE_BYTES="$(wc -c < "$OUT" | tr -d '[:space:]')"
+echo "OK: $OUT ($SIZE_BYTES bytes)"

deploy/nas/tver-db/compose.yaml

@@ -0,0 +1,36 @@
+# tver 用 PostgreSQL スタック（Synology ds923p / 192.168.10.201）
+#
+# 配置先: ds923p の Container Manager「プロジェクト」
+#   /volume1/docker/tver-db/ に本ファイルを compose.yaml として配置する。
+# パスワードは同じディレクトリの .env（POSTGRES_PASSWORD）から注入し、
+#   このファイルには実値を書かない。
+#
+# 注意（初回起動チェックポイント）:
+#   起動前に /volume1/docker/tver-db/pgdata を作成する。
+#   初回起動後は Container Manager のヘルス状態とログを確認し、
+#   "database system is ready to accept connections" が出てからアプリを起動する。
+#   bind mount の所有権・権限で初期化に失敗した場合は、原因を確認してから
+#   名前付きボリュームへの切り替えを検討する。
+
+services:
+  postgres:
+    # Debian ベースの PostgreSQL 17。initdb の UTF-8 ロケールを利用する。
+    image: postgres:17
+    container_name: tver-postgres
+    restart: always
+    environment:
+      POSTGRES_USER: tver
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: tver
+      # 初回の initdb でのみ有効。既存の pgdata には後から反映されない。
+      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --lc-collate=en_US.UTF-8 --lc-ctype=en_US.UTF-8"
+    ports:
+      # [要確認] Container Manager で 15434 が未使用であることを起動前に確認する。
+      # DSM ファイアウォールでは dockage（192.168.10.155）だけを許可する。
+      - "15434:5432"
+    volumes:
+      - /volume1/docker/tver-db/pgdata:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U tver -d tver"]
+      interval: 10s
+      retries: 5

deploy/nas/tver-db/restore-test.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+# tver DB復元確認（Synology ds923pで手動実行）
+#
+# 配置先: /volume1/docker/tver-db/restore-test.sh
+# 実行コマンド: bash /volume1/docker/tver-db/restore-test.sh
+# 最新のバックアップを同じPostgreSQLコンテナ内の一時DBへ復元し、主要4表の
+# 行数を本番DBと比較する。本番DBにはSELECTだけを実行する。
+
+set -euo pipefail
+
+BACKUP_DIR="${BACKUP_DIR:-/volume1/backups/tver}"
+LOG_FILE="${LOG_FILE:-${BACKUP_DIR}/restore-test.log}"
+CONTAINER="${CONTAINER:-tver-postgres}"
+DB_USER="${DB_USER:-tver}"
+DB_NAME="${DB_NAME:-tver}"
+RESTORE_DB="${RESTORE_DB:-tver_restore_test}"
+DOCKER="${DOCKER:-$(command -v docker || printf '/usr/local/bin/docker')}"
+TABLES=(download_jobs subscriptions known_episodes schema_migrations)
+
+mkdir -p "$BACKUP_DIR"
+touch "$LOG_FILE"
+chmod 600 "$LOG_FILE"
+exec > >(tee -a "$LOG_FILE") 2>&1
+
+if [[ "$RESTORE_DB" == "$DB_NAME" ]]; then
+  echo "ERROR: RESTORE_DB must differ from DB_NAME" >&2
+  exit 1
+fi
+
+# 終了状態にかかわらず、一時DBの削除を最後に試みる。
+cleanup() {
+  status=$?
+  trap - EXIT
+  set +e
+  "$DOCKER" exec "$CONTAINER" dropdb --force --if-exists -U "$DB_USER" "$RESTORE_DB"
+  cleanup_status=$?
+  if ((status != 0)); then
+    echo "復元確認に失敗"
+    exit "$status"
+  fi
+  exit "$cleanup_status"
+}
+trap cleanup EXIT
+
+LATEST="$(find "$BACKUP_DIR" -name 'tver_*.sql.gz' -type f -print | sort | tail -n 1)"
+if [[ -z "$LATEST" ]]; then
+  echo "ERROR: backup dump was not found in $BACKUP_DIR" >&2
+  exit 1
+fi
+
+echo "復元確認を開始: $LATEST"
+"$DOCKER" exec "$CONTAINER" dropdb --force --if-exists -U "$DB_USER" "$RESTORE_DB"
+"$DOCKER" exec "$CONTAINER" createdb -U "$DB_USER" "$RESTORE_DB"
+
+gzip -dc "$LATEST" \
+  | "$DOCKER" exec -i "$CONTAINER" psql -q -o /dev/null -v ON_ERROR_STOP=1 -U "$DB_USER" -d "$RESTORE_DB"
+
+for table in "${TABLES[@]}"; do
+  query="SELECT count(*) FROM public.${table};"
+  production_count="$("$DOCKER" exec "$CONTAINER" psql -A -t -q -U "$DB_USER" -d "$DB_NAME" -c "$query" | tr -d '[:space:]')"
+  restored_count="$("$DOCKER" exec "$CONTAINER" psql -A -t -q -U "$DB_USER" -d "$RESTORE_DB" -c "$query" | tr -d '[:space:]')"
+  if [[ ! "$production_count" =~ ^[0-9]+$ || ! "$restored_count" =~ ^[0-9]+$ ]]; then
+    echo "ERROR: $table の行数を取得できませんでした: production=$production_count restore=$restored_count" >&2
+    exit 1
+  fi
+  if [[ "$production_count" != "$restored_count" ]]; then
+    echo "ERROR: $table の行数が一致しません: production=$production_count restore=$restored_count" >&2
+    exit 1
+  fi
+  echo "OK: $table production=$production_count restore=$restored_count"
+done
+
+echo "復元確認に成功: $LATEST"

deploy/nas/tver-db/scripts_test.go

@@ -0,0 +1,401 @@
+package tverdb_test
+
+import (
+	"bytes"
+	"compress/gzip"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestBackupDB(t *testing.T) {
+	t.Run("success and retention boundary", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		old := filepath.Join(env.backupDir, "tver_20260901_000000.sql.gz")
+		boundary := filepath.Join(env.backupDir, "tver_20260920_000000.sql.gz")
+		unrelated := []string{
+			filepath.Join(env.backupDir, "restore-test.log"),
+			filepath.Join(env.backupDir, "other_20260901_000000.sql.gz"),
+			filepath.Join(env.backupDir, "tver_20260901_000000.sql"),
+		}
+		writeFile(t, old, "old")
+		writeFile(t, boundary, "boundary")
+		for _, path := range unrelated {
+			writeFile(t, path, "keep")
+		}
+		now := time.Now()
+		oldTime := now.Add(-(15*24*time.Hour + time.Hour))
+		boundaryTime := now.Add(-(15*24*time.Hour - time.Hour))
+		if err := os.Chtimes(old, oldTime, oldTime); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.Chtimes(boundary, boundaryTime, boundaryTime); err != nil {
+			t.Fatal(err)
+		}
+		for _, path := range unrelated {
+			if err := os.Chtimes(path, oldTime, oldTime); err != nil {
+				t.Fatal(err)
+			}
+		}
+
+		output, err := env.run(t, "backup-db.sh", "STAMP=20261004_010203", "KEEP_DAYS=14", "CONTAINER=custom-postgres", "DB_USER=custom-user", "DB_NAME=custom-db")
+		if err != nil {
+			t.Fatalf("backup failed: %v\n%s", err, output)
+		}
+		created := filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz")
+		if got := readGzip(t, created); !strings.Contains(got, "CREATE TABLE example") {
+			t.Fatalf("dump=%q", got)
+		}
+		if _, err := os.Stat(old); !os.IsNotExist(err) {
+			t.Fatalf("old backup remains: %v", err)
+		}
+		if _, err := os.Stat(boundary); err != nil {
+			t.Fatalf("14-day backup was deleted: %v", err)
+		}
+		for _, path := range unrelated {
+			if got := readFile(t, path); got != "keep" {
+				t.Fatalf("unrelated file was changed: %s content=%q", path, got)
+			}
+		}
+		if !strings.Contains(output, "OK: "+created) || !strings.Contains(output, "bytes") {
+			t.Fatalf("success output=%q", output)
+		}
+		if log := readFile(t, env.dockerLog); !strings.Contains(log, "exec custom-postgres pg_dump -U custom-user -d custom-db") {
+			t.Fatalf("docker log=%q", log)
+		}
+	})
+
+	t.Run("creates missing backup directory", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		if err := os.RemoveAll(env.backupDir); err != nil {
+			t.Fatal(err)
+		}
+		output, err := env.run(t, "backup-db.sh", "STAMP=20261004_010203")
+		if err != nil {
+			t.Fatalf("backup failed: %v\n%s", err, output)
+		}
+		if got := readGzip(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz")); !strings.Contains(got, "CREATE TABLE example") {
+			t.Fatalf("dump=%q", got)
+		}
+	})
+
+	t.Run("does not replace an existing completed backup", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		completed := filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz")
+		writeGzip(t, completed, "existing")
+		output, err := env.run(t, "backup-db.sh", "STAMP=20261004_010203")
+		if err == nil {
+			t.Fatalf("backup replaced an existing file: %s", output)
+		}
+		if got := readGzip(t, completed); got != "existing" {
+			t.Fatalf("existing backup was changed: %q", got)
+		}
+		assertNoBackupTemps(t, env.backupDir)
+	})
+
+	t.Run("same stamp concurrently allows exactly one backup", func(t *testing.T) {
+		env := newScriptEnv(t, "concurrent")
+		barrier := filepath.Join(env.dir, "barrier")
+		extra := []string{"STAMP=20261004_010203", "FAKE_DOCKER_BARRIER=" + barrier}
+		commands := make([]*exec.Cmd, 2)
+		outputs := make([]bytes.Buffer, 2)
+		for i := range commands {
+			commands[i] = exec.Command("bash", "backup-db.sh")
+			commands[i].Env = append(append(append([]string{}, os.Environ()...), env.baseEnv...), extra...)
+			commands[i].Stdout = &outputs[i]
+			commands[i].Stderr = &outputs[i]
+			if err := commands[i].Start(); err != nil {
+				t.Fatal(err)
+			}
+		}
+		succeeded := 0
+		for i, command := range commands {
+			if err := command.Wait(); err == nil {
+				succeeded++
+			} else if _, ok := err.(*exec.ExitError); !ok {
+				t.Fatalf("backup %d wait: %v output=%q", i, err, outputs[i].String())
+			}
+		}
+		if succeeded != 1 {
+			t.Fatalf("concurrent successes=%d want=1 outputs=%q / %q", succeeded, outputs[0].String(), outputs[1].String())
+		}
+		if got := readGzip(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz")); !strings.Contains(got, "CREATE TABLE example") {
+			t.Fatalf("completed dump=%q", got)
+		}
+		assertNoBackupTemps(t, env.backupDir)
+	})
+
+	for _, mode := range []string{"dump-fail", "dump-partial-fail", "empty"} {
+		t.Run(mode, func(t *testing.T) {
+			env := newScriptEnv(t, mode)
+			output, err := env.run(t, "backup-db.sh", "STAMP=20261004_010203")
+			if err == nil {
+				t.Fatalf("backup succeeded unexpectedly: %s", output)
+			}
+			matches, globErr := filepath.Glob(filepath.Join(env.backupDir, "tver_*.sql.gz"))
+			if globErr != nil || len(matches) != 0 {
+				t.Fatalf("partial backups=%v err=%v", matches, globErr)
+			}
+			assertNoBackupTemps(t, env.backupDir)
+			if mode == "empty" && !strings.Contains(output, "empty") {
+				t.Fatalf("empty dump error missing: %q", output)
+			}
+		})
+	}
+
+	for _, keepDays := range []string{"-1", "invalid"} {
+		t.Run("invalid retention "+keepDays, func(t *testing.T) {
+			env := newScriptEnv(t, "success")
+			output, err := env.run(t, "backup-db.sh", "STAMP=20261004_010203", "KEEP_DAYS="+keepDays)
+			if err == nil || !strings.Contains(output, "KEEP_DAYS") {
+				t.Fatalf("invalid KEEP_DAYS: err=%v output=%q", err, output)
+			}
+			if _, err := os.Stat(env.dockerLog); !os.IsNotExist(err) {
+				t.Fatalf("pg_dump was invoked: %v", err)
+			}
+		})
+	}
+}
+
+func TestRestoreTest(t *testing.T) {
+	t.Run("restores latest dump and compares rows", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		writeGzip(t, filepath.Join(env.backupDir, "tver_20261003_010203.sql.gz"), "older")
+		writeGzip(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz"), "newest")
+		output, err := env.run(t, "restore-test.sh")
+		if err != nil {
+			t.Fatalf("restore test failed: %v\n%s", err, output)
+		}
+		for _, table := range []string{"download_jobs", "subscriptions", "known_episodes", "schema_migrations"} {
+			if !strings.Contains(output, "OK: "+table) {
+				t.Errorf("missing result for %s: %s", table, output)
+			}
+		}
+		if got := readFile(t, env.restoreInput); got != "newest" {
+			t.Fatalf("restored dump=%q", got)
+		}
+		log := readFile(t, env.dockerLog)
+		if !strings.Contains(log, "psql -q -o /dev/null -v ON_ERROR_STOP=1") {
+			t.Fatalf("psql output suppression is missing: %q", log)
+		}
+		cleanupCommand := "dropdb --force --if-exists -U tver tver_restore_test"
+		if strings.Count(log, cleanupCommand) != 2 || !strings.HasSuffix(strings.TrimSpace(log), cleanupCommand) {
+			t.Fatalf("temporary DB cleanup log=%q", log)
+		}
+		for _, line := range strings.Split(strings.TrimSpace(log), "\n") {
+			if (strings.Contains(line, " createdb ") || strings.Contains(line, " dropdb ")) && !strings.HasSuffix(line, "tver_restore_test") {
+				t.Fatalf("production DB mutation was attempted: %q", line)
+			}
+			if strings.Contains(line, " psql ") && strings.Contains(line, " -d tver ") && !strings.Contains(line, "SELECT count(*)") {
+				t.Fatalf("production DB received a non-count command: %q", line)
+			}
+			if strings.Contains(line, " ON_ERROR_STOP=1 ") && !strings.Contains(line, " -d tver_restore_test") {
+				t.Fatalf("dump was restored into a non-temporary DB: %q", line)
+			}
+		}
+		if restoreLog := readFile(t, filepath.Join(env.backupDir, "restore-test.log")); !strings.Contains(restoreLog, "復元確認に成功") || strings.Contains(restoreLog, "SET\n") || strings.Contains(restoreLog, "CREATE TABLE\n") {
+			t.Fatalf("restore log=%q", restoreLog)
+		}
+	})
+
+	for _, mode := range []string{"restore-fail", "count-mismatch"} {
+		t.Run(mode+" cleans temporary database", func(t *testing.T) {
+			env := newScriptEnv(t, mode)
+			writeGzip(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz"), "dump")
+			output, err := env.run(t, "restore-test.sh")
+			if err == nil {
+				t.Fatalf("restore test succeeded unexpectedly: %s", output)
+			}
+			log := strings.TrimSpace(readFile(t, env.dockerLog))
+			if !strings.HasSuffix(log, "dropdb --force --if-exists -U tver tver_restore_test") {
+				t.Fatalf("cleanup was not last command: %q", log)
+			}
+			if mode == "count-mismatch" && !strings.Contains(output, "ERROR: known_episodes") {
+				t.Fatalf("mismatch not reported: %q", output)
+			}
+			if mode == "restore-fail" {
+				if !strings.Contains(output, "restore failed") {
+					t.Fatalf("restore error missing from output: %q", output)
+				}
+				if restoreLog := readFile(t, filepath.Join(env.backupDir, "restore-test.log")); !strings.Contains(restoreLog, "restore failed") {
+					t.Fatalf("restore error missing from log: %q", restoreLog)
+				}
+			}
+		})
+	}
+
+	t.Run("rejects production database as restore target", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		writeGzip(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz"), "dump")
+		output, err := env.run(t, "restore-test.sh", "RESTORE_DB=tver")
+		if err == nil || !strings.Contains(output, "RESTORE_DB must differ from DB_NAME") {
+			t.Fatalf("production restore target was accepted: err=%v output=%q", err, output)
+		}
+		if _, err := os.Stat(env.dockerLog); !os.IsNotExist(err) {
+			t.Fatalf("docker was invoked: %v", err)
+		}
+		if log := readFile(t, filepath.Join(env.backupDir, "restore-test.log")); !strings.Contains(log, "RESTORE_DB must differ from DB_NAME") {
+			t.Fatalf("rejection was not logged: %q", log)
+		}
+	})
+
+	t.Run("missing dump fails and cleans temporary database", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		output, err := env.run(t, "restore-test.sh")
+		if err == nil || !strings.Contains(output, "backup dump was not found") {
+			t.Fatalf("missing dump: err=%v output=%q", err, output)
+		}
+		log := strings.TrimSpace(readFile(t, env.dockerLog))
+		if log != "exec tver-postgres dropdb --force --if-exists -U tver tver_restore_test" {
+			t.Fatalf("unexpected cleanup: %q", log)
+		}
+		if restoreLog := readFile(t, filepath.Join(env.backupDir, "restore-test.log")); !strings.Contains(restoreLog, "backup dump was not found") {
+			t.Fatalf("failure was not logged: %q", restoreLog)
+		}
+	})
+
+	t.Run("honors database and container overrides", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		writeGzip(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz"), "dump")
+		output, err := env.run(t, "restore-test.sh", "CONTAINER=custom-postgres", "DB_USER=custom-user", "DB_NAME=production", "RESTORE_DB=temporary")
+		if err != nil {
+			t.Fatalf("restore failed: %v\n%s", err, output)
+		}
+		for _, line := range strings.Split(strings.TrimSpace(readFile(t, env.dockerLog)), "\n") {
+			if !strings.Contains(line, " custom-postgres ") || strings.Contains(line, " tver-postgres ") || !strings.Contains(line, " -U custom-user ") {
+				t.Fatalf("override missing: %q", line)
+			}
+			if (strings.Contains(line, " createdb ") || strings.Contains(line, " dropdb ")) && !strings.HasSuffix(line, "temporary") {
+				t.Fatalf("wrong temporary DB: %q", line)
+			}
+		}
+	})
+
+	t.Run("invalid gzip fails and cleans temporary database", func(t *testing.T) {
+		env := newScriptEnv(t, "success")
+		writeFile(t, filepath.Join(env.backupDir, "tver_20261004_010203.sql.gz"), "not gzip")
+		output, err := env.run(t, "restore-test.sh")
+		if err == nil {
+			t.Fatalf("invalid gzip succeeded: %s", output)
+		}
+		log := strings.TrimSpace(readFile(t, env.dockerLog))
+		if !strings.HasSuffix(log, "dropdb --force --if-exists -U tver tver_restore_test") {
+			t.Fatalf("cleanup was not last command: %q", log)
+		}
+	})
+}
+
+type scriptEnv struct {
+	dir, backupDir, dockerLog, restoreInput string
+	baseEnv                                 []string
+}
+
+func newScriptEnv(t *testing.T, mode string) scriptEnv {
+	t.Helper()
+	dir := t.TempDir()
+	backupDir := filepath.Join(dir, "backups")
+	if err := os.MkdirAll(backupDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	scriptDir, err := filepath.Abs(".")
+	if err != nil {
+		t.Fatal(err)
+	}
+	dockerDir := filepath.Join(scriptDir, "testdata")
+	return scriptEnv{
+		dir:          dir,
+		backupDir:    backupDir,
+		dockerLog:    filepath.Join(dir, "docker.log"),
+		restoreInput: filepath.Join(dir, "restore.sql"),
+		baseEnv: []string{
+			"PATH=" + dockerDir + string(os.PathListSeparator) + os.Getenv("PATH"),
+			"BACKUP_DIR=" + backupDir,
+			"LOG_FILE=" + filepath.Join(backupDir, "restore-test.log"),
+			"FAKE_DOCKER_LOG=" + filepath.Join(dir, "docker.log"),
+			"FAKE_RESTORE_INPUT=" + filepath.Join(dir, "restore.sql"),
+			"FAKE_DOCKER_MODE=" + mode,
+		},
+	}
+}
+
+func (e scriptEnv) run(t *testing.T, script string, extraEnv ...string) (string, error) {
+	t.Helper()
+	cmd := exec.Command("bash", script)
+	cmd.Env = append(append(os.Environ(), e.baseEnv...), extraEnv...)
+	var output bytes.Buffer
+	cmd.Stdout = &output
+	cmd.Stderr = &output
+	err := cmd.Run()
+	return output.String(), err
+}
+
+func writeFile(t *testing.T, path, content string) {
+	t.Helper()
+	if err := os.WriteFile(path, []byte(content), 0o600); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func readFile(t *testing.T, path string) string {
+	t.Helper()
+	data, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return string(data)
+}
+
+func writeGzip(t *testing.T, path, content string) {
+	t.Helper()
+	file, err := os.Create(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	writer := gzip.NewWriter(file)
+	if _, err := io.WriteString(writer, content); err != nil {
+		t.Fatal(err)
+	}
+	if err := writer.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if err := file.Close(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func readGzip(t *testing.T, path string) string {
+	t.Helper()
+	file, err := os.Open(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer file.Close()
+	reader, err := gzip.NewReader(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer reader.Close()
+	data, err := io.ReadAll(reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return string(data)
+}
+
+func assertNoBackupTemps(t *testing.T, backupDir string) {
+	t.Helper()
+	entries, err := os.ReadDir(backupDir)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, entry := range entries {
+		name := entry.Name()
+		if strings.HasPrefix(name, ".tver_") || strings.Contains(name, ".sql.gz.tmp.") {
+			t.Errorf("temporary backup remains: %s", name)
+		}
+	}
+}

deploy/nas/tver-db/testdata/docker

@@ -0,0 +1,97 @@
+#!/bin/bash
+set -euo pipefail
+
+printf '%s\n' "$*" >> "${FAKE_DOCKER_LOG:?}"
+
+command_line=" $* "
+if [[ "$command_line" == *" pg_dump "* ]]; then
+  case "${FAKE_DOCKER_MODE:-success}" in
+    dump-fail)
+      printf 'pg_dump failed\n' >&2
+      exit 42
+      ;;
+    dump-partial-fail)
+      printf '%s\n' '-- incomplete dump --'
+      printf 'pg_dump failed after output\n' >&2
+      exit 42
+      ;;
+    empty)
+      exit 0
+      ;;
+    concurrent)
+      barrier="${FAKE_DOCKER_BARRIER:?}"
+      mkdir -p "$barrier"
+      touch "$barrier/$$"
+      for _ in {1..500}; do
+        count="$(find "$barrier" -type f | wc -l | tr -d '[:space:]')"
+        if ((count >= 2)); then
+          break
+        fi
+        sleep 0.01
+      done
+      if ((count < 2)); then
+        printf 'concurrent backup barrier timed out\n' >&2
+        exit 46
+      fi
+      ;;
+  esac
+  printf '%s\n' '-- fake PostgreSQL dump --' 'CREATE TABLE example(id integer);'
+  exit 0
+fi
+
+if [[ "$command_line" == *" createdb "* ]]; then
+  exit 0
+fi
+
+if [[ "$command_line" == *" dropdb "* ]]; then
+  exit 0
+fi
+
+if [[ "$command_line" == *" psql "* && "$command_line" == *" ON_ERROR_STOP=1 "* ]]; then
+  cat > "${FAKE_RESTORE_INPUT:?}"
+  if [[ "${FAKE_DOCKER_MODE:-success}" == "restore-fail" ]]; then
+    printf 'restore failed\n' >&2
+    exit 43
+  fi
+  if [[ "$command_line" != *" -o /dev/null "* ]]; then
+    printf '%s\n' 'SET' 'CREATE TABLE'
+  fi
+  exit 0
+fi
+
+if [[ "$command_line" == *" psql "* && "$command_line" == *" SELECT count(*) FROM public."* ]]; then
+  database=""
+  query=""
+  while (($#)); do
+    case "$1" in
+      -d)
+        database="$2"
+        shift 2
+        ;;
+      -c)
+        query="$2"
+        shift 2
+        ;;
+      *)
+        shift
+        ;;
+    esac
+  done
+  table="${query#*public.}"
+  table="${table%%;*}"
+  case "$table" in
+    download_jobs) count=3 ;;
+    subscriptions) count=2 ;;
+    known_episodes) count=5 ;;
+    schema_migrations) count=3 ;;
+    *) printf 'unexpected table: %s\n' "$table" >&2; exit 44 ;;
+  esac
+  if [[ "${FAKE_DOCKER_MODE:-success}" == "count-mismatch" && "$database" == "${RESTORE_DB:-tver_restore_test}" && "$table" == "known_episodes" ]]; then
+    count=4
+  fi
+  printf '%s\n' "$count"
+  exit 0
+fi
+
+printf 'unexpected docker invocation: %s\n' "$*" >&2
+exit 45

docs/deploy.md

@@ -0,0 +1,339 @@
+---
+title: tver 本番配置手順
+tags:
+  - homelab
+  - tver
+  - deployment
+---
+
+# tver 本番配置手順
+
+> [!info] 対象
+> Synology NAS `ds923p`（`192.168.10.201`）に PostgreSQL 17 と動画共有を用意し、dockage（`192.168.10.155`）の `/opt/stacks/tver` で web・worker を起動する。
+
+> [!danger] 秘匿値を記録しない
+> PostgreSQL のパスワードや完成した `DATABASE_URL` は、この文書や Git 管理下のファイルに書かない。NAS と dockage の `.env` にだけ保存し、権限を `600` にする。
+
+## 事前に確認する値
+
+| 項目 | 値 |
+|---|---|
+| NAS | `ds923p` / `192.168.10.201` |
+| dockage | `192.168.10.155` |
+| NAS のNFS共有 | `/volume1/video` |
+| dockage のNFSマウント | `/mnt/nas-tver` |
+| tverの動画保存先 | NAS: `/volume1/video/tver`、dockage: `/mnt/nas-tver/tver` |
+| PostgreSQL 公開ポート | `15434` |
+| PostgreSQL ユーザー / DB | `tver` / `tver` |
+| アプリ配置先 | `/opt/stacks/tver` |
+| Gitea配置用ユーザー | `tver-deploy`（リポジトリ読み取りのみ） |
+
+## 1. NASを準備する
+
+### 1.1 NFSサービスを有効にする
+
+1. DSMの「コントロール パネル」→「ファイル サービス」→「NFS」でNFSサービスを有効にする。
+2. 共有フォルダ `video` が `/volume1/video` にあることを確認する。
+3. `video` の「編集」→「NFS 権限」で次を追加する。
+
+| 設定 | 値 |
+|---|---|
+| ホスト名またはIP | `192.168.10.155` |
+| 権限 | 読み書き |
+| Squash | すべてのユーザーをadminに割り当てる |
+| セキュリティ | `sys` |
+| 非同期を有効にする | オン |
+
+> [!success] adminへの割り当てを確認済み
+> DSMの`admin`アカウントが無効な状態でも、上記設定でUID `65532`からフォルダ作成・書き込み・読み込み・rename・削除に成功した。NAS上の所有者はUID `1024`・GID `100`だった。[実機] 2026-10-04 確認
+
+### 1.2 PostgreSQLのファイルを用意する
+
+1. NAS上に次のディレクトリを事前作成する。
+
+   ```text
+   /volume1/docker/tver-db/
+   /volume1/docker/tver-db/pgdata/
+   ```
+
+2. [[../deploy/nas/tver-db/compose.yaml|NAS用compose.yaml]]、`.env.example`、`backup-db.sh`、`restore-test.sh`を`/volume1/docker/tver-db/`に配置する。ディレクトリはroot以外がファイルを削除・置換できないようにし、スクリプトはrootだけが実行できるようにする。
+
+   ```bash
+   chmod 755 /volume1/docker/tver-db
+   chmod 700 /volume1/docker/tver-db/backup-db.sh
+   chmod 700 /volume1/docker/tver-db/restore-test.sh
+   ls -ld /volume1/docker/tver-db
+   ls -l /volume1/docker/tver-db/backup-db.sh /volume1/docker/tver-db/restore-test.sh
+   ```
+
+   DSMのACLが付いている場合、`chmod`後の`ls`でパーミッション表示の末尾から`+`が外れ、ディレクトリが`drwxr-xr-x`、スクリプトが`-rwx------`になったことを確認する。`/volume1/docker`では全員書き込み可のACLが確認されたため、スクリプトだけでなく配置ディレクトリにも`chmod 755`を適用する。
+
+3. `.env.example`を`.env`へコピーし、`POSTGRES_PASSWORD`に十分長いランダムな値を設定する。値には、URLへの埋め込みで追加のエスケープが不要な16進文字列を使える。
+
+   ```bash
+   cd /volume1/docker/tver-db
+   umask 077
+   cp .env.example .env
+   # openssl rand -hex 64 で値を生成し、.env の POSTGRES_PASSWORD に設定する。
+   chmod 600 .env
+   ```
+
+> [!important] DBとアプリで同じパスワードを使う
+> ここで設定した値を、後述するdockage側の`DATABASE_URL`にも使う。値そのものは文書やGitへ残さない。
+
+### 1.3 Container ManagerでPostgreSQLを起動する
+
+1. Container Managerの「プロジェクト」で、`/volume1/docker/tver-db/compose.yaml`を使う`tver-db`プロジェクトを作成する。
+2. 起動前に、他のプロジェクトとポート一覧を確認し、`15434`が空いていることを確認する。
+3. プロジェクトをビルド・起動する。
+4. `tver-postgres`が`healthy`になることを確認する。
+5. コンテナログに`database system is ready to accept connections`があることを確認する。
+
+初期化に失敗した場合は、先に`pgdata`の所有権・権限とログを確認する。空のDBを作り直す場合を除き、既存の`pgdata`を削除しない。
+
+### 1.4 DSMファイアウォールを設定する
+
+TCP `15434`について、送信元`192.168.10.155`だけを許可するルールを追加する。他の送信元を許可する広いルールより前に配置し、LAN内の別ホストからDBへ接続できない構成にする。
+
+DSMファイアウォールを設定した状態で、dockageからNASのTCP `15434`へ到達できることを確認済みである。[実機] 2026-10-04 確認
+
+## 2. dockageを準備する
+
+### 2.1 NFSクライアントとマウント先を用意する
+
+```bash
+sudo apt update
+sudo apt install -y nfs-common
+sudo mkdir -p /mnt/nas-tver
+```
+
+`/etc/fstab`へ次の1行を追加する。`_netdev`でネットワーク後に扱い、`nofail`でNAS停止時もdockageの起動を妨げない。
+
+```fstab
+192.168.10.201:/volume1/video /mnt/nas-tver nfs defaults,_netdev,nofail 0 0
+```
+
+設定を反映し、想定したNFS共有がマウントされたことを確認する。
+
+```bash
+sudo mount -a
+findmnt --target /mnt/nas-tver
+```
+
+実機ではNFSv3でマウントできた。NFS権限を追加した直後の1回目は`access denied`となり、直後の2回目で成功した。NFS権限の反映待ちと考えられるため、設定内容が正しい場合は少し待って`sudo mount -a`を再実行する。[実機] 2026-10-04 確認
+
+### 2.2 workerのUIDで書き込みを確認する
+
+既存の`anime`・`drama`・`misc`・`personal`・`variety`とアプリのファイルを分け、admin相当の書き込み範囲を限定するため、tver専用サブフォルダを使う。Dockerグループの`kazu634`で、workerコンテナと同じUID・GID `65532:65532`の確認用コンテナを実行し、フォルダ作成、書き込み、読み取り、rename、削除を確認する。`sudo`は不要である。
+
+```bash
+docker run --rm --user 65532:65532 -v /mnt/nas-tver/tver:/videos busybox:stable sh -c 'mkdir /videos/.tver-write-test && echo ok > /videos/.tver-write-test/f && cat /videos/.tver-write-test/f && mv /videos/.tver-write-test/f /videos/.tver-write-test/g && ls -ln /videos/.tver-write-test && rm -r /videos/.tver-write-test && echo cleanup-ok'
+```
+
+期待する結果は、内容の`ok`、`ls -ln`で表示される`g`の所有者`1024 100`、最後の`cleanup-ok`である。確認後は確認用イメージを削除する。
+
+```bash
+docker rmi busybox:stable
+```
+
+`/mnt/nas-tver/tver`は作成済みで、上記のDockerコンテナによる操作は実機確認済みである。[実機] 2026-10-04 確認。別環境へ作り直す場合も、書き込み確認が成功するまでworkerを起動しない。
+
+### 2.3 Giteaに配置用ユーザーを用意する
+
+Giteaは`REQUIRE_SIGNIN_VIEW = true`かつ`DISABLE_SSH = true`で動作している。匿名HTTPSの`info/refs`は`401`となり、SSHも使えないため、配置専用の読み取り資格情報を使う。[実機] 2026-10-04 確認
+
+1. Giteaの管理画面で、配置専用ユーザー`tver-deploy`を作成する。
+2. `kazu634/tver`リポジトリの「設定」→「共同作業者」で`tver-deploy`を追加し、権限を「読み取り」にする。
+3. `tver-deploy`でGiteaへログインし、ユーザー設定の「アプリケーション」からrepository読み取り権限だけを持つトークンを作成する。
+4. トークンは作成時に安全な場所へ控え、この文書、シェル履歴、Git管理下のファイルへ実値を書かない。
+
+### 2.4 dockageにclone用トークンを保存する
+
+Dockerホストの管理ユーザー`kazu634`で次を実行する。トークンは非表示で読み取り、権限`600`の専用credentialファイルへ保存する。credential helperはGiteaのHTTPS URLにだけ設定する。
+
+```bash
+install -d -m 700 ~/.config/git
+read -rs -p 'Gitea token: ' TOKEN; echo
+umask 077
+printf 'https://tver-deploy:%s@gitea.kazu634.com\n' "$TOKEN" > ~/.config/git/credentials-tver
+unset TOKEN
+git config --global credential.https://gitea.kazu634.com.helper 'store --file ~/.config/git/credentials-tver'
+git clone https://tver-deploy@gitea.kazu634.com/kazu634/tver.git /opt/stacks/tver
+cd /opt/stacks/tver
+```
+
+この手順で認証付きcloneに成功した。[実機] 2026-10-04 確認。トークンを失効・更新した場合は、同じ手順で`credentials-tver`を作り直す。
+
+### 2.5 アプリの環境変数を用意する
+
+`.env.example`をGit管理外の`.env`へコピーし、`DATABASE_URL`へパスワード用の伏字を入れる。ファイルを`600`にしてから、パスワードを非表示で読み取り、伏字だけを置換する。
+
+```bash
+cd /opt/stacks/tver
+umask 077
+cp .env.example .env
+sed -i 's|^DATABASE_URL=.*|DATABASE_URL=postgres://tver:__SET_PASSWORD__@192.168.10.201:15434/tver?sslmode=disable|' .env
+chmod 600 .env
+read -rs -p 'PostgreSQL password: ' DB_PASSWORD; echo
+sed -i "s|__SET_PASSWORD__|${DB_PASSWORD}|" .env
+unset DB_PASSWORD
+if grep -q '__SET_PASSWORD__' .env; then echo 'DATABASE_URLのパスワードが未設定です' >&2; exit 1; fi
+```
+
+完成した`.env`は次の項目を持つ。`DATABASE_URL`の実値は表示したり、文書へ転記したりしない。
+
+```dotenv
+DATABASE_URL=<設定済み・表示しない>
+VIDEO_HOST_DIR=/mnt/nas-tver/tver
+VIDEO_DIR=/videos
+WORKER_CONCURRENCY=1
+```
+
+> [!warning] パスワードの文字種
+> この手順で使うPostgreSQLパスワードには、URLや`sed`の区切りに影響する`@`・`:`・`/`・`?`・`#`・`%`・`|`を含めない。NAS準備時に16進文字列で生成すれば、この制約を満たせる。
+
+### 2.6 起動する
+
+`/opt/stacks/tver`でwebとworkerをビルドして起動する。
+
+```bash
+cd /opt/stacks/tver
+docker compose up -d --build
+```
+
+この方法で起動すると、Dockgeの画面にも`tver`スタックとして表示された。[実機] 2026-10-04 確認。Dockge上でweb・workerがともにrunningになり、再起動を繰り返していないことを確認する。
+
+コマンドでも状態とログを確認できる。
+
+```bash
+cd /opt/stacks/tver
+docker compose ps
+docker compose logs --tail=100 web worker
+```
+
+## 3. 動作を確認する
+
+1. ヘルスチェックが`200`と`ok`を返すことを確認する。
+
+   ```bash
+   curl --fail --show-error http://192.168.10.155:8080/healthz
+   ```
+
+2. ブラウザで`http://192.168.10.155:8080/`を開き、新着一覧が表示されることを確認する。
+3. 番組またはエピソードを1件登録し、`/queue`で待ち行列、進捗、完了を確認する。
+4. `/library`から動画を再生し、シークできることを確認する。
+5. NASの`/volume1/video/tver`に規則どおりのMP4が作成されたことを確認する。
+6. `tver-postgres`のログとweb・workerのログに、接続失敗やマイグレーション失敗がないことを確認する。
+
+> [!success] 本番の動作確認結果
+> `/healthz`はHTTP `200`、新着バラエティは98件を表示した。4分の本編`ep5hcgopp2`を登録すると20秒以内に完了し、NASの`video/tver/<番組名>/`へ92,340,468バイトの1080p H.264/AAC MP4が保存された。所有者はUID `1024`・GID `100`、`.incoming`は空だった。`/library`の表示・再生とHTTP Range `206`も確認した。[実機] 2026-10-04 確認
+
+> [!note] Synologyの`@eaDir`
+> NASが番組フォルダ内に所有者UID `0`の`@eaDir`を作る。アプリのライブラリ一覧はファイルシステムの走査ではなくDBから作るため、表示や再生には影響しない。[実機] 2026-10-04 確認
+
+## 4. 更新する
+
+```bash
+cd /opt/stacks/tver
+git status --short
+git pull --ff-only
+```
+
+`git status --short`に追跡対象ファイルの変更がある場合は、内容を確認してから更新する。pull後、Dockgeで`tver`スタックを再ビルドして再配置し、[[#3. 動作を確認する]]を繰り返す。
+
+yt-dlpを更新するときは`Dockerfile.worker`の`YT_DLP_VERSION`の既定値を変更してリポジトリへ反映し、workerイメージをキャッシュなしで再ビルドする。更新後はworkerログと少数の実動画で抽出・保存を確認する。
+
+## 5. PostgreSQLをバックアップする
+
+バックアップはNAS上のDSMタスクスケジューラから毎日実行する。`tver-postgres`コンテナ内の`pg_dump`を使って`/volume1/backups/tver/tver_<YYYYmmdd_HHMMSS>.sql.gz`へ保存し、既定では14日より古い世代を削除する。
+
+> [!warning] バックアップ先も同じNASにある
+> このバックアップはDBの誤操作や破損からの復元用であり、NAS本体の故障には備えられない。`/volume1/backups/tver/`はSynology Hyper Backupの対象にも含める。
+
+### 5.1 DSMの日次タスクを登録する
+
+DSMの「コントロール パネル」→「タスク スケジューラ」で「スケジュールされたタスク」→「ユーザー定義のスクリプト」を作成する。
+
+| 設定 | 値 |
+|---|---|
+| ユーザー | `root` |
+| 実行周期 | 毎日 |
+| ユーザー定義のスクリプト | `bash /volume1/docker/tver-db/backup-db.sh` |
+
+`DOCKER`、`CONTAINER`、`BACKUP_DIR`、`KEEP_DAYS`、`DB_USER`、`DB_NAME`は環境変数で上書きできる。通常運用では既定値を使う。
+
+> [!success] NASで手動実行を確認済み
+> DSMタスクスケジューラへrootの日次タスクを登録し、手動実行で2つのgzipダンプを作成した。復元確認も成功している。翌日以降の日次自動実行は未確認である。[実機] 2026-10-04 確認
+
+> [!todo] 日次自動実行を確認する
+> 翌日以降にDSMタスクの実行履歴と新しいダンプを確認する。[要確認]
+
+### 5.2 手動でバックアップを確認する
+
+NASへSSH接続し、初回は手動で実行する。
+
+```bash
+sudo bash /volume1/docker/tver-db/backup-db.sh
+LATEST=$(sudo find /volume1/backups/tver -name 'tver_*.sql.gz' -type f -print | sort | tail -n 1)
+test -n "$LATEST"
+sudo test -s "$LATEST"
+sudo gzip -t "$LATEST"
+sudo ls -lh "$LATEST"
+```
+
+スクリプトが`OK:`、保存先、バイト数を表示し、`gzip -t`が成功することを確認する。`pg_dump`の失敗や空のダンプでは非0で終了し、完成ファイルを残さない。同じ秒の完成ファイルが既にある場合も非0で終了し、既存ファイルを上書きしない。同時実行時は同一ディレクトリ内のハードリンク作成に成功した一方だけが完成ファイルを公開する。
+
+> [!success] NASでのバックアップ結果
+> DSMタスクスケジューラから実行し、`tver_20261004_182838.sql.gz`（2,286バイト）と`tver_20261004_183256.sql.gz`（2,289バイト）を`/volume1/backups/tver/`へ作成した。ダンプはroot所有・権限600で、バックアップディレクトリはroot所有・`drwxr-xr-x`だった。[実機] 2026-10-04 確認
+
+### 5.3 別DBへの復元を確認する
+
+最新ダンプを本番DBへ戻す前に、同じコンテナ内の一時DB`tver_restore_test`へ復元する。
+
+```bash
+sudo bash /volume1/docker/tver-db/restore-test.sh
+sudo tail -n 100 /volume1/backups/tver/restore-test.log
+```
+
+`restore-test.sh`はrootで実行する。バックアップディレクトリとログがroot所有のため、一般ユーザーでは`restore-test.log`への書き込みに失敗する。`download_jobs`、`subscriptions`、`known_episodes`、`schema_migrations`の行数が本番DBと一致し、最後に「復元確認に成功」と表示されることを確認する。復元SQLの通常出力は抑制され、ログには開始、各表の結果、成功または失敗が残る。SQLエラーは標準エラーとしてログに残る。一時DBは成功・失敗のどちらでもEXIT trapで削除される。本番DBに対しては行数取得の`SELECT`だけを実行する。
+
+> [!success] NASでの復元確認結果
+> 一般ユーザー`kazu634`での実行は`restore-test.log`へ書き込めず、`touch: Permission denied`で終了した。`sudo`で実行すると、`download_jobs` 1件、`subscriptions` 1件、`known_episodes` 1件、`schema_migrations` 3件が本番DBと一時DBで一致し、「復元確認に成功」と表示された。同じ結果がログに残り、一時DBも削除された。[実機] 2026-10-04 確認
+
+> [!note] 配置ディレクトリの権限変更後の状態
+> `/volume1/docker/tver-db`を`chmod 755`にした後も、本番アプリの`/queue`と`/subscriptions`はHTTP `200`を返し、DBを読み取れた。PostgreSQLコンテナを再起動した後の動作は未確認である。[要確認]
+
+### 5.4 障害時に本番DBへ復元する
+
+> [!danger] 本番DBを置き換える操作
+> 先に[[#5.3 別DBへの復元を確認する]]を成功させ、復元対象のダンプを明示してから実行する。`tver`以外のDB名へ読み替えない。
+
+1. dockageの`/opt/stacks/tver`でwebとworkerを停止し、DBへの書き込みを止める。
+
+   ```bash
+   cd /opt/stacks/tver
+   docker compose stop web worker
+   ```
+
+2. NASで復元対象を指定し、存在・サイズ・gzip形式を確認する。
+
+   ```bash
+   DUMP=/volume1/backups/tver/tver_<YYYYmmdd_HHMMSS>.sql.gz
+   test -s "$DUMP"
+   gzip -t "$DUMP"
+   ```
+
+3. NASで本番DBを作り直し、ダンプを復元する。
+
+   ```bash
+   docker exec tver-postgres dropdb --if-exists -U tver tver
+   docker exec tver-postgres createdb -U tver tver
+   gzip -dc "$DUMP" | docker exec -i tver-postgres psql -v ON_ERROR_STOP=1 -U tver -d tver
+   ```
+
+4. dockageでwebとworkerを再開し、[[#3. 動作を確認する]]を実施する。
+
+   ```bash
+   cd /opt/stacks/tver
+   docker compose start web worker
+   ```

go.mod

@@ -0,0 +1,18 @@
+module gitea.kazu634.com/kazu634/tver
+
+go 1.27.1
+
+require (
+	github.com/fergusstrange/embedded-postgres v1.34.0
+	github.com/jackc/pgx/v5 v5.11.0
+)
+
+require (
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	github.com/lib/pq v1.10.9 // indirect
+	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+)

go.sum

@@ -0,0 +1,34 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fergusstrange/embedded-postgres v1.34.0 h1:c6RKhPKFsLVU+Tdxsx8q0UxCHsvZZ/iShAnljRBXs6s=
+github.com/fergusstrange/embedded-postgres v1.34.0/go.mod h1:w0YvnCgf19o6tskInrOOACtnqfVlOvluz3hlNLY7tRk=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.11.0 h1:IzBBtyK9AHqf98cctWFifYSci2hgQR/cd56wB4p+ogg=
+github.com/jackc/pgx/v5 v5.11.0/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
+github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
+github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
+github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 h1:nIPpBwaJSVYIxUFsDv3M8ofmx9yWTog9BfvIu0q41lo=
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+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/media/path.go

@@ -0,0 +1,82 @@
+package media
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+	"unicode"
+)
+
+const (
+	maxSeriesBytes    = 90
+	maxEpisodeBytes   = 140
+	maxEpisodeIDBytes = 64
+	maxFilenameBytes  = 255
+)
+
+// RelativeVideoPath は worker と web が共有する保存先の相対パスを返す。
+func RelativeVideoPath(seriesTitle, episodeTitle, episodeID string) (string, error) {
+	series := sanitizeComponent(seriesTitle, maxSeriesBytes)
+	episode := sanitizeComponent(episodeTitle, maxEpisodeBytes)
+	id := sanitizeComponent(episodeID, -1)
+	if len(id) > maxEpisodeIDBytes {
+		return "", fmt.Errorf("エピソードIDはサニタイズ後%dバイト以下である必要があります: %dバイト", maxEpisodeIDBytes, len(id))
+	}
+
+	// A directory entry must fit within the NFS namlen limit. Keep the episode
+	// ID intact and use the remaining bytes for the episode title.
+	const separators = "  [].mp4"
+	seriesInFilename := series
+	titleBytes := maxFilenameBytes - len(seriesInFilename) - len(id) - len(separators)
+	if titleBytes < 0 {
+		titleBytes = 0
+	}
+	episode = truncateComponent(episode, titleBytes, false)
+	return filepath.Join(series, seriesInFilename+" "+episode+" ["+id+"].mp4"), nil
+}
+
+func sanitizeComponent(value string, maxBytes int) string {
+	var result []rune
+	lastReplacement := false
+	for _, r := range value {
+		invalid := unicode.IsControl(r) || strings.ContainsRune(`<>:"/\|?*`, r)
+		if invalid {
+			if !lastReplacement {
+				result = append(result, '_')
+				lastReplacement = true
+			}
+			continue
+		}
+		if unicode.IsSpace(r) {
+			r = ' '
+		}
+		result = append(result, r)
+		lastReplacement = false
+	}
+	clean := strings.Trim(string(result), " .")
+	if clean == "" || clean == "." || clean == ".." {
+		return "名称未設定"
+	}
+	return truncateComponent(clean, maxBytes, true)
+}
+
+func truncateComponent(value string, maxBytes int, fallback bool) string {
+	if maxBytes < 0 {
+		return value
+	}
+	var limited []rune
+	bytes := 0
+	for _, r := range value {
+		size := len(string(r))
+		if bytes+size > maxBytes {
+			break
+		}
+		limited = append(limited, r)
+		bytes += size
+	}
+	clean := strings.Trim(string(limited), " .")
+	if fallback && (clean == "" || clean == "." || clean == "..") {
+		return "名称未設定"
+	}
+	return clean
+}

internal/media/path_test.go

@@ -0,0 +1,267 @@
+package media
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+	"testing"
+	"unicode"
+	"unicode/utf8"
+)
+
+func TestRelativeVideoPath(t *testing.T) {
+	got, err := RelativeVideoPath("番組名", "第1話", "ep123")
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := filepath.Join("番組名", "番組名 第1話 [ep123].mp4")
+	if got != want {
+		t.Fatalf("path=%q want=%q", got, want)
+	}
+	other, err := RelativeVideoPath("番組名", "第1話", "ep456")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got == other || !strings.Contains(other, "[ep456]") {
+		t.Fatalf("ID による衝突回避: %q %q", got, other)
+	}
+}
+
+func TestRelativeVideoPathSanitizesComponents(t *testing.T) {
+	got, err := RelativeVideoPath(" 番組:/\\*?<>|\"\x00\n\t\x7f\u0085. ", "\x00\n", "../")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if filepath.IsAbs(got) || strings.ContainsAny(got, `:*?<>|"`) || strings.Contains(got, "..") {
+		t.Fatalf("禁止文字が残った: %q", got)
+	}
+	for _, r := range got {
+		if unicode.IsControl(r) {
+			t.Errorf("制御文字が残った: %U in %q", r, got)
+		}
+	}
+	parts := strings.Split(filepath.ToSlash(got), "/")
+	if len(parts) != 2 || parts[0] == "" || !strings.HasSuffix(got, ".mp4") {
+		t.Fatalf("相対パスの形: %q", got)
+	}
+}
+
+func TestRelativeVideoPathHandlesEmptyAndLongNames(t *testing.T) {
+	for _, name := range []string{"", " ", ".", "..", "..."} {
+		got, err := RelativeVideoPath(name, name, "")
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !strings.Contains(got, "名称未設定") {
+			t.Errorf("空の代替名 %q: %q", name, got)
+		}
+	}
+	long := strings.Repeat("界", 200)
+	got, err := RelativeVideoPath(long, long, "id")
+	if err != nil {
+		t.Fatal(err)
+	}
+	parts := strings.Split(filepath.ToSlash(got), "/")
+	if len(parts) != 2 || len([]byte(parts[0])) != maxSeriesBytes || !utf8.ValidString(parts[0]) {
+		t.Fatalf("番組名の%dバイト境界: %q (%d bytes)", maxSeriesBytes, parts[0], len([]byte(parts[0])))
+	}
+	if len([]byte(parts[1])) > maxFilenameBytes || !utf8.ValidString(parts[1]) {
+		t.Fatalf("ファイル名の上限: %q (%d bytes)", parts[1], len([]byte(parts[1])))
+	}
+	if got := sanitizeComponent(strings.Repeat("a", maxEpisodeBytes+1), maxEpisodeBytes); len([]byte(got)) != maxEpisodeBytes {
+		t.Fatalf("ASCII の%dバイト境界: %d %q", maxEpisodeBytes, len([]byte(got)), got)
+	}
+}
+
+func TestRelativeVideoPathEpisodeIDLimit(t *testing.T) {
+	id := strings.Repeat("i", maxEpisodeIDBytes)
+	got, err := RelativeVideoPath(strings.Repeat("s", maxSeriesBytes), strings.Repeat("t", maxEpisodeBytes), id)
+	if err != nil {
+		t.Fatal(err)
+	}
+	parts := strings.Split(filepath.ToSlash(got), "/")
+	if len(parts) != 2 || len([]byte(parts[1])) > maxFilenameBytes || !strings.Contains(parts[1], "["+id+"]") {
+		t.Fatalf("64バイトIDのファイル名=%q", got)
+	}
+	if _, err := RelativeVideoPath("series", "episode", strings.Repeat("i", maxEpisodeIDBytes+1)); err == nil {
+		t.Fatal("65バイトのエピソードIDを受理した")
+	}
+}
+
+func TestRelativeVideoPathUsesFilenameBudgetInRequiredOrder(t *testing.T) {
+	series := strings.Repeat("s", maxSeriesBytes)
+	title := strings.Repeat("t", maxEpisodeBytes)
+	for _, tt := range []struct {
+		name              string
+		idBytes           int
+		wantSeriesInFile  int
+		wantEpisodeInFile int
+		wantFilenameBytes int
+	}{
+		{"ちょうど255バイト", 17, 90, 140, 255},
+		{"回タイトルから1バイト削る", 18, 90, 139, 255},
+		{"64バイトIDでも番組名を維持", 64, 90, 93, 255},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			id := strings.Repeat("i", tt.idBytes)
+			path, err := RelativeVideoPath(series, title, id)
+			if err != nil {
+				t.Fatal(err)
+			}
+			parts := strings.Split(filepath.ToSlash(path), "/")
+			if len(parts) != 2 || parts[0] != series {
+				t.Fatalf("ディレクトリ名=%q", parts)
+			}
+			wantFilename := strings.Repeat("s", tt.wantSeriesInFile) + " " + strings.Repeat("t", tt.wantEpisodeInFile) + " [" + id + "].mp4"
+			if parts[1] != wantFilename || len([]byte(parts[1])) != tt.wantFilenameBytes {
+				t.Fatalf("filename=%q (%d bytes) want=%q (%d bytes)", parts[1], len([]byte(parts[1])), wantFilename, tt.wantFilenameBytes)
+			}
+		})
+	}
+}
+
+func TestRelativeVideoPathEpisodeIDNearAndBeyondFilenameLimit(t *testing.T) {
+	for _, idBytes := range []int{64, 65, 248, 255, 256} {
+		t.Run(fmt.Sprintf("id_%d_bytes", idBytes), func(t *testing.T) {
+			id := strings.Repeat("i", idBytes)
+			path, err := RelativeVideoPath("series", "episode", id)
+			if idBytes > 64 {
+				if err == nil || path != "" {
+					t.Fatalf("%dバイトID: path=%q err=%v, want error", idBytes, path, err)
+				}
+				if !strings.Contains(err.Error(), "64バイト以下") {
+					t.Fatalf("%dバイトIDのエラー理由=%q", idBytes, err)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatal(err)
+			}
+			parts := strings.Split(filepath.ToSlash(path), "/")
+			if len(parts) != 2 {
+				t.Fatalf("parts=%q", parts)
+			}
+			if !strings.Contains(parts[1], "["+id+"]") {
+				t.Fatalf("episode ID was changed: %q", parts[1])
+			}
+			if got := len([]byte(parts[1])); got > maxFilenameBytes {
+				t.Fatalf("episode ID %d bytes produced %d-byte filename above %d: %q", idBytes, got, maxFilenameBytes, parts[1])
+			}
+			if !utf8.ValidString(parts[1]) {
+				t.Fatalf("filename is not valid UTF-8: %q", parts[1])
+			}
+		})
+	}
+}
+
+func TestRelativeVideoPathHasNoRuneLimit(t *testing.T) {
+	series := strings.Repeat("a", 90)
+	title := strings.Repeat("b", 100)
+	got, err := RelativeVideoPath(series, title, "id")
+	if err != nil {
+		t.Fatal(err)
+	}
+	parts := strings.Split(filepath.ToSlash(got), "/")
+	if parts[0] != series || !strings.Contains(parts[1], " "+title+" [id].mp4") {
+		t.Fatalf("80 rune limit remains: %q", got)
+	}
+}
+
+func TestSanitizeComponentTrimsWhitespaceBeforeLengthLimit(t *testing.T) {
+	for _, tt := range []struct {
+		name, input, want string
+	}{
+		{"前後の空白", " \t　番組名\n ", "_ 番組名_"},
+		{"空白のみ", " 　 ", "名称未設定"},
+		{"制御文字のみ", "\t\n", "_"},
+		{"多数の先頭空白", strings.Repeat(" ", 100) + "番組名", "番組名"},
+		{"先頭空白と長い名前", strings.Repeat(" ", 70) + strings.Repeat("a", 100), strings.Repeat("a", maxSeriesBytes)},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := sanitizeComponent(tt.input, maxSeriesBytes); got != tt.want {
+				t.Errorf("sanitizeComponent()=%q want=%q", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSanitizeComponentTrimsAgainAfterLengthLimit(t *testing.T) {
+	for _, tt := range []struct {
+		name, input, want string
+	}{
+		{"90バイト目が空白", strings.Repeat("a", 89) + " " + "b", strings.Repeat("a", 89)},
+		{"90バイト目がドット", strings.Repeat("a", 89) + "." + "b", strings.Repeat("a", 89)},
+		{"切り詰め部分が空白のみ", "a" + strings.Repeat(" ", 89) + "b", "a"},
+		{"切り詰め部分がドットのみ", "a" + strings.Repeat(".", 89) + "b", "a"},
+		{"複数バイト文字の直後がドット", strings.Repeat("界", 29) + ".続", strings.Repeat("界", 29)},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			got := sanitizeComponent(tt.input, maxSeriesBytes)
+			if got != tt.want {
+				t.Errorf("sanitizeComponent()=%q want=%q", got, tt.want)
+			}
+			if strings.Trim(got, " .") != got || got == "" {
+				t.Errorf("切り詰め後の名前が不正: %q", got)
+			}
+		})
+	}
+}
+
+func TestSanitizeComponentSafetyProperties(t *testing.T) {
+	var controls strings.Builder
+	for r := rune(0); r <= 0x9f; r++ {
+		if unicode.IsControl(r) {
+			controls.WriteRune(r)
+		}
+	}
+	inputs := []string{
+		"", " ", ".", "..", "...", `<>:"/\|?*`, controls.String(),
+		" \t　番組名\n. ", "a/b\\c", strings.Repeat("a", 500),
+		strings.Repeat("界", 500), strings.Repeat("😀", 500),
+		strings.Repeat(".", 100) + "name" + strings.Repeat(" ", 100),
+		string([]byte{0xff, 0xfe, 'a', 0xc0, 0xaf}),
+	}
+	for i, input := range inputs {
+		got := sanitizeComponent(input, maxEpisodeBytes)
+		if got == "" || got == "." || got == ".." {
+			t.Errorf("case %d: 空またはdot segment: %q", i, got)
+		}
+		if strings.Trim(got, " .") != got {
+			t.Errorf("case %d: 前後に空白またはdot: %q", i, got)
+		}
+		if len([]byte(got)) > 140 {
+			t.Errorf("case %d: 上限超過: bytes=%d %q", i, len([]byte(got)), got)
+		}
+		if !utf8.ValidString(got) {
+			t.Errorf("case %d: 不正なUTF-8: %q", i, got)
+		}
+		if strings.ContainsAny(got, `<>:"/\|?*`) {
+			t.Errorf("case %d: 禁止文字が残った: %q", i, got)
+		}
+		for _, r := range got {
+			if unicode.IsControl(r) {
+				t.Errorf("case %d: 制御文字が残った: %U in %q", i, r, got)
+			}
+		}
+		if again := sanitizeComponent(got, maxEpisodeBytes); again != got {
+			t.Errorf("case %d: 再適用で変化: %q -> %q", i, got, again)
+		}
+
+		path, err := RelativeVideoPath(input, input, "id")
+		if err != nil {
+			t.Errorf("case %d: パス生成エラー: %v", i, err)
+			continue
+		}
+		parts := strings.Split(filepath.ToSlash(path), "/")
+		if filepath.IsAbs(path) || len(parts) != 2 || parts[0] == "" || parts[0] == "." || parts[0] == ".." || !strings.HasSuffix(parts[1], ".mp4") {
+			t.Errorf("case %d: 安全でない相対パス: %q parts=%q", i, path, parts)
+			continue
+		}
+		if len([]byte(parts[0])) > 90 || len([]byte(parts[1])) > 255 {
+			t.Errorf("case %d: パス要素の上限超過: dir=%d filename=%d path=%q", i, len([]byte(parts[0])), len([]byte(parts[1])), path)
+		}
+		if !utf8.ValidString(path) {
+			t.Errorf("case %d: パスが不正なUTF-8: %q", i, path)
+		}
+	}
+}

internal/store/library_test.go

@@ -0,0 +1,205 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+)
+
+func completeTestJob(t *testing.T, s *Store, id string) Job {
+	t.Helper()
+	ctx := context.Background()
+	job, _, err := s.Enqueue(ctx, sampleEpisode(id), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil || claimed.ID != job.ID {
+		t.Fatalf("claim: %+v %v", claimed, err)
+	}
+	if err := s.Complete(ctx, job.ID, "番組/video.mp4", 1234); err != nil {
+		t.Fatal(err)
+	}
+	result, err := s.GetSucceededJob(ctx, job.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return result
+}
+
+func TestLibrarySeriesAggregationAndJobs(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	complete := func(ep Episode, size int64, finished time.Time) Job {
+		t.Helper()
+		job, _, err := s.Enqueue(ctx, ep, "manual")
+		if err != nil {
+			t.Fatal(err)
+		}
+		claimed, err := s.ClaimNext(ctx)
+		if err != nil || claimed.ID != job.ID {
+			t.Fatalf("claim: %+v %v", claimed, err)
+		}
+		if err := s.Complete(ctx, job.ID, ep.SeriesTitle+"/video.mp4", size); err != nil {
+			t.Fatal(err)
+		}
+		if _, err := s.pool.Exec(ctx, `UPDATE download_jobs SET finished_at=$2 WHERE id=$1`, job.ID, finished); err != nil {
+			t.Fatal(err)
+		}
+		result, err := s.GetSucceededJob(ctx, job.ID)
+		if err != nil {
+			t.Fatal(err)
+		}
+		return result
+	}
+	older := time.Date(2026, 10, 1, 0, 0, 0, 0, time.UTC)
+	newer := older.Add(time.Hour)
+	newest := newer.Add(time.Hour)
+	first := complete(Episode{ID: "aggregate-a1", SeriesID: "seriesA", SeriesTitle: "旧番組名", Title: "第1話", BroadcasterName: "旧局", ThumbnailPath: "/old.jpg"}, 100, older)
+	second := complete(Episode{ID: "aggregate-a2", SeriesID: "seriesA", SeriesTitle: "新番組名", Title: "第2話", BroadcasterName: "新局", ThumbnailPath: "/new.jpg"}, 250, newer)
+	complete(Episode{ID: "aggregate-b1", SeriesID: "seriesB", SeriesTitle: "別番組", Title: "第1話", BroadcasterName: "別局", ThumbnailPath: "/other.jpg"}, 500, newest)
+	if _, err := s.pool.Exec(ctx, `UPDATE download_jobs SET file_size_bytes=NULL WHERE id=$1`, first.ID); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.pool.Exec(ctx, `INSERT INTO subscriptions (series_id, series_title) VALUES ('seriesA', '登録名')`); err != nil {
+		t.Fatal(err)
+	}
+
+	series, err := s.ListLibrarySeries(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(series) != 2 || series[0].SeriesID != "seriesB" || series[1].SeriesID != "seriesA" {
+		t.Fatalf("番組の並び: %+v", series)
+	}
+	got := series[1]
+	if got.SeriesTitle != "新番組名" || got.LatestTitle != "第2話" || got.BroadcasterName != "新局" || got.ThumbnailPath != "/new.jpg" || got.EpisodeCount != 2 || got.TotalSizeBytes != 250 || got.LatestFinishedAt == nil || !got.LatestFinishedAt.Equal(newer) || !got.Subscribed {
+		t.Fatalf("番組集計: %+v", got)
+	}
+	if series[0].Subscribed || series[0].TotalSizeBytes != 500 {
+		t.Fatalf("未登録番組: %+v", series[0])
+	}
+	jobs, err := s.ListSucceededJobsBySeries(ctx, "seriesA")
+	if err != nil || len(jobs) != 2 || jobs[0].ID != second.ID || jobs[1].ID != first.ID || jobs[1].FileSizeBytes != nil {
+		t.Fatalf("番組の回: %+v %v", jobs, err)
+	}
+	if jobs, err := s.ListSucceededJobsBySeries(ctx, "missing"); err != nil || len(jobs) != 0 {
+		t.Fatalf("存在しない番組: %+v %v", jobs, err)
+	}
+	if _, err := s.ListSucceededJobsBySeries(ctx, ""); err == nil {
+		t.Fatal("空の番組IDを許した")
+	}
+}
+
+func TestLibraryStoreOperations(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	first := completeTestJob(t, s, "library-1")
+	second := completeTestJob(t, s, "library-2")
+	jobs, err := s.ListSucceededJobs(ctx, 1)
+	if err != nil || len(jobs) != 1 || jobs[0].ID != second.ID {
+		t.Fatalf("完了一覧: %+v %v", jobs, err)
+	}
+	if first.FilePath == nil || *first.FilePath != "番組/video.mp4" || first.FileSizeBytes == nil || *first.FileSizeBytes != 1234 || first.FinishedAt == nil {
+		t.Fatalf("完了情報: %+v", first)
+	}
+	queued, _, err := s.Enqueue(ctx, sampleEpisode("not-finished"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.GetSucceededJob(ctx, queued.ID); !errors.Is(err, pgx.ErrNoRows) {
+		t.Fatalf("未完了の取得: %v", err)
+	}
+	if err := s.DeleteSucceededJob(ctx, queued.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("未完了の削除: %v", err)
+	}
+	if err := s.DeleteSucceededJob(ctx, first.ID); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.GetJob(ctx, first.ID); !errors.Is(err, pgx.ErrNoRows) {
+		t.Fatalf("削除後の取得: %v", err)
+	}
+	if err := s.DeleteSucceededJob(ctx, first.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("再削除: %v", err)
+	}
+	if _, err := s.ListSucceededJobs(ctx, 0); err == nil {
+		t.Fatal("0件の上限を許した")
+	}
+}
+
+func TestDeleteSucceededJobKeepsKnownEpisodeAndAllowsManualRequeue(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	ep := seriesEpisode("known-library", "known-series")
+	created, err := s.RegisterSubscription(ctx, "known-series", "番組", []Episode{ep}, false)
+	if err != nil || !created {
+		t.Fatalf("番組登録: %t %v", created, err)
+	}
+	job, created, err := s.Enqueue(ctx, ep, "manual")
+	if err != nil || !created {
+		t.Fatalf("手動投入: %+v %t %v", job, created, err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil || claimed.ID != job.ID {
+		t.Fatalf("取得: %+v %v", claimed, err)
+	}
+	if err := s.Complete(ctx, job.ID, "番組/video.mp4", 10); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.DeleteSucceededJob(ctx, job.ID); err != nil {
+		t.Fatal(err)
+	}
+	unknown, err := s.UnknownEpisodeIDs(ctx, "known-series", []string{ep.ID})
+	if err != nil || len(unknown) != 0 {
+		t.Fatalf("削除後の既知記録: %v %v", unknown, err)
+	}
+	requeued, created, err := s.Enqueue(ctx, ep, "manual")
+	if err != nil || !created || requeued.Status != "queued" || requeued.Source != "manual" {
+		t.Fatalf("削除後の手動再投入: %+v %t %v", requeued, created, err)
+	}
+}
+
+func TestListSucceededJobsByIDsAndSeriesIDs(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	first := completeTestJob(t, s, "bulk-list-1")
+
+	ep := seriesEpisode("bulk-list-2", "series-2")
+	second, _, err := s.Enqueue(ctx, ep, "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil || claimed.ID != second.ID {
+		t.Fatalf("claim: %+v %v", claimed, err)
+	}
+	if err := s.Complete(ctx, second.ID, "別番組/video.mp4", 5678); err != nil {
+		t.Fatal(err)
+	}
+	second, err = s.GetSucceededJob(ctx, second.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	queued, _, err := s.Enqueue(ctx, seriesEpisode("bulk-list-queued", "series-2"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	byIDs, err := s.ListSucceededJobsByIDs(ctx, []int64{second.ID, queued.ID, first.ID})
+	if err != nil || len(byIDs) != 2 || byIDs[0].ID != first.ID || byIDs[1].ID != second.ID {
+		t.Fatalf("ID指定の完了済み取得: %+v %v", byIDs, err)
+	}
+	bySeries, err := s.ListSucceededJobsBySeriesIDs(ctx, []string{"series-2", "series-1"})
+	if err != nil || len(bySeries) != 2 || bySeries[0].ID != first.ID || bySeries[1].ID != second.ID {
+		t.Fatalf("番組指定の完了済み取得: %+v %v", bySeries, err)
+	}
+	if empty, err := s.ListSucceededJobsByIDs(ctx, nil); err != nil || len(empty) != 0 {
+		t.Fatalf("空のID指定: %+v %v", empty, err)
+	}
+	if empty, err := s.ListSucceededJobsBySeriesIDs(ctx, []string{}); err != nil || len(empty) != 0 {
+		t.Fatalf("空の番組指定: %+v %v", empty, err)
+	}
+}

internal/store/migrate.go

@@ -0,0 +1,73 @@
+package store
+
+import (
+	"context"
+	"embed"
+	"fmt"
+	"io/fs"
+	"sort"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+//go:embed migrations/*.sql
+var migrations embed.FS
+
+const migrationLockID int64 = 0x747665725f646231
+
+// Migrate は同じ接続で排他ロックを保持し、未適用の SQL を順に実行する。
+func Migrate(ctx context.Context, pool *pgxpool.Pool) error {
+	conn, err := pool.Acquire(ctx)
+	if err != nil {
+		return fmt.Errorf("migration connection: %w", err)
+	}
+	defer conn.Release()
+	if _, err := conn.Exec(ctx, "SELECT pg_advisory_lock($1)", migrationLockID); err != nil {
+		return fmt.Errorf("migration lock: %w", err)
+	}
+	defer func() {
+		// 接続を返す前にロックを解放する。解放に失敗した接続は閉じる。
+		if _, err := conn.Exec(context.Background(), "SELECT pg_advisory_unlock($1)", migrationLockID); err != nil {
+			conn.Conn().Close(context.Background())
+		}
+	}()
+
+	if _, err := conn.Exec(ctx, `CREATE TABLE IF NOT EXISTS schema_migrations (
+		version TEXT PRIMARY KEY,
+		applied_at TIMESTAMPTZ NOT NULL DEFAULT now()
+	)`); err != nil {
+		return fmt.Errorf("migration metadata: %w", err)
+	}
+	files, err := fs.Glob(migrations, "migrations/*.sql")
+	if err != nil {
+		return err
+	}
+	sort.Strings(files)
+	for _, name := range files {
+		tx, err := conn.Begin(ctx)
+		if err != nil {
+			return err
+		}
+		var applied bool
+		err = tx.QueryRow(ctx, "SELECT EXISTS (SELECT 1 FROM schema_migrations WHERE version=$1)", name).Scan(&applied)
+		if err == nil && !applied {
+			var sql []byte
+			sql, err = migrations.ReadFile(name)
+			if err == nil {
+				_, err = tx.Exec(ctx, string(sql), pgx.QueryExecModeSimpleProtocol)
+			}
+			if err == nil {
+				_, err = tx.Exec(ctx, "INSERT INTO schema_migrations (version) VALUES ($1)", name)
+			}
+		}
+		if err != nil {
+			_ = tx.Rollback(ctx)
+			return fmt.Errorf("migration %s: %w", name, err)
+		}
+		if err := tx.Commit(ctx); err != nil {
+			return fmt.Errorf("migration %s commit: %w", name, err)
+		}
+	}
+	return nil
+}

internal/store/migrations/001_initial.sql

@@ -0,0 +1,44 @@
+CREATE TABLE download_jobs (
+    id BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+    episode_id TEXT NOT NULL UNIQUE,
+    series_id TEXT NOT NULL,
+    series_title TEXT NOT NULL,
+    title TEXT NOT NULL,
+    broadcaster_name TEXT NOT NULL,
+    duration_seconds INTEGER NOT NULL CHECK (duration_seconds >= 0),
+    end_at TIMESTAMPTZ,
+    thumbnail_path TEXT NOT NULL,
+    source TEXT NOT NULL CHECK (source IN ('manual', 'subscription')),
+    status TEXT NOT NULL DEFAULT 'queued' CHECK (status IN ('queued', 'running', 'succeeded', 'failed', 'canceled')),
+    phase TEXT CHECK (phase IN ('video', 'audio', 'merging', 'moving')),
+    downloaded_bytes BIGINT CHECK (downloaded_bytes >= 0),
+    total_bytes BIGINT CHECK (total_bytes >= 0),
+    total_is_estimate BOOLEAN NOT NULL DEFAULT FALSE,
+    speed_bps DOUBLE PRECISION CHECK (speed_bps >= 0),
+    eta_seconds DOUBLE PRECISION CHECK (eta_seconds >= 0),
+    fragment_index INTEGER CHECK (fragment_index >= 0),
+    fragment_count INTEGER CHECK (fragment_count >= 0),
+    format_id TEXT,
+    error_kind TEXT CHECK (error_kind IN ('drm', 'geo', 'network', 'unavailable', 'extract', 'canceled', 'invalid_output', 'unknown')),
+    error_message TEXT,
+    file_path TEXT,
+    file_size_bytes BIGINT CHECK (file_size_bytes >= 0),
+    attempts INTEGER NOT NULL DEFAULT 0 CHECK (attempts >= 0),
+    heartbeat_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    started_at TIMESTAMPTZ,
+    finished_at TIMESTAMPTZ,
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX download_jobs_claim_idx ON download_jobs (created_at, id) WHERE status = 'queued';
+CREATE INDEX download_jobs_status_newest_idx ON download_jobs (status, created_at DESC, id DESC);
+CREATE INDEX download_jobs_stale_idx ON download_jobs (heartbeat_at) WHERE status = 'running';
+
+CREATE TABLE subscriptions (
+    series_id TEXT PRIMARY KEY,
+    series_title TEXT NOT NULL,
+    enabled BOOLEAN NOT NULL DEFAULT TRUE,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    last_checked_at TIMESTAMPTZ
+);

internal/store/migrations/002_known_episodes.sql

@@ -0,0 +1,8 @@
+CREATE TABLE known_episodes (
+    series_id TEXT NOT NULL REFERENCES subscriptions(series_id) ON DELETE CASCADE,
+    episode_id TEXT NOT NULL,
+    first_seen_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (series_id, episode_id)
+);
+
+CREATE INDEX download_jobs_series_idx ON download_jobs (series_id);

internal/store/migrations/003_subscription_check_errors.sql

@@ -0,0 +1,6 @@
+ALTER TABLE subscriptions
+    ADD COLUMN last_check_error_at TIMESTAMPTZ,
+    ADD COLUMN last_check_error TEXT;
+
+CREATE INDEX subscriptions_due_idx
+    ON subscriptions (last_checked_at) WHERE enabled;

internal/store/store.go

@@ -0,0 +1,424 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+var ErrInvalidTransition = errors.New("invalid job status transition")
+
+type Store struct{ pool *pgxpool.Pool }
+
+func New(pool *pgxpool.Pool) *Store { return &Store{pool: pool} }
+
+type Episode struct {
+	ID, SeriesID, SeriesTitle, Title, BroadcasterName, ThumbnailPath string
+	DurationSeconds                                                  int
+	EndAt                                                            *time.Time
+}
+
+type Job struct {
+	ID                                 int64
+	EpisodeID, SeriesID, SeriesTitle   string
+	Title, BroadcasterName             string
+	DurationSeconds                    int
+	EndAt                              *time.Time
+	ThumbnailPath, Source, Status      string
+	Phase, FormatID                    *string
+	DownloadedBytes, TotalBytes        *int64
+	TotalIsEstimate                    bool
+	SpeedBPS, ETASeconds               *float64
+	FragmentIndex, FragmentCount       *int32
+	ErrorKind, ErrorMessage, FilePath  *string
+	FileSizeBytes                      *int64
+	Attempts                           int
+	HeartbeatAt, StartedAt, FinishedAt *time.Time
+	CreatedAt, UpdatedAt               time.Time
+}
+
+type LibrarySeries struct {
+	SeriesID, SeriesTitle, LatestTitle string
+	BroadcasterName, ThumbnailPath     string
+	EpisodeCount, TotalSizeBytes       int64
+	LatestFinishedAt                   *time.Time
+	Subscribed                         bool
+}
+
+type Progress struct {
+	Phase           string
+	DownloadedBytes *int64
+	TotalBytes      *int64
+	TotalIsEstimate bool
+	SpeedBPS        *float64
+	ETASeconds      *float64
+	FragmentIndex   *int32
+	FragmentCount   *int32
+	FormatID        *string
+}
+
+type Subscription struct {
+	SeriesID, SeriesTitle string
+	Enabled               bool
+	CreatedAt             time.Time
+	LastCheckedAt         *time.Time
+	LastCheckErrorAt      *time.Time
+	LastCheckError        *string
+	JobCount              int64
+}
+
+const jobColumns = `id, episode_id, series_id, series_title, title, broadcaster_name,
+	duration_seconds, end_at, thumbnail_path, source, status, phase,
+	downloaded_bytes, total_bytes, total_is_estimate, speed_bps, eta_seconds,
+	fragment_index, fragment_count, format_id, error_kind, error_message,
+	file_path, file_size_bytes, attempts, heartbeat_at, created_at,
+	started_at, finished_at, updated_at`
+
+var claimedJobColumns = func() string {
+	columns := strings.Split(jobColumns, ",")
+	for i, column := range columns {
+		columns[i] = "j." + strings.TrimSpace(column)
+	}
+	return strings.Join(columns, ", ")
+}()
+
+func scanJob(row pgx.Row) (Job, error) {
+	var j Job
+	err := row.Scan(&j.ID, &j.EpisodeID, &j.SeriesID, &j.SeriesTitle, &j.Title,
+		&j.BroadcasterName, &j.DurationSeconds, &j.EndAt, &j.ThumbnailPath,
+		&j.Source, &j.Status, &j.Phase, &j.DownloadedBytes, &j.TotalBytes,
+		&j.TotalIsEstimate, &j.SpeedBPS, &j.ETASeconds, &j.FragmentIndex,
+		&j.FragmentCount, &j.FormatID, &j.ErrorKind, &j.ErrorMessage,
+		&j.FilePath, &j.FileSizeBytes, &j.Attempts, &j.HeartbeatAt,
+		&j.CreatedAt, &j.StartedAt, &j.FinishedAt, &j.UpdatedAt)
+	return j, err
+}
+
+// Enqueue は同じエピソードの既存ジョブを再利用する。
+func (s *Store) Enqueue(ctx context.Context, ep Episode, source string) (Job, bool, error) {
+	row := s.pool.QueryRow(ctx, `INSERT INTO download_jobs
+		(episode_id, series_id, series_title, title, broadcaster_name, duration_seconds, end_at, thumbnail_path, source)
+		VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9) ON CONFLICT (episode_id) DO NOTHING RETURNING `+jobColumns,
+		ep.ID, ep.SeriesID, ep.SeriesTitle, ep.Title, ep.BroadcasterName,
+		ep.DurationSeconds, ep.EndAt, ep.ThumbnailPath, source)
+	job, err := scanJob(row)
+	if err == nil {
+		return job, true, nil
+	}
+	if !errors.Is(err, pgx.ErrNoRows) {
+		return Job{}, false, err
+	}
+	job, err = scanJob(s.pool.QueryRow(ctx, `SELECT `+jobColumns+` FROM download_jobs WHERE episode_id=$1`, ep.ID))
+	return job, false, err
+}
+
+func (s *Store) GetJob(ctx context.Context, id int64) (Job, error) {
+	return scanJob(s.pool.QueryRow(ctx, `SELECT `+jobColumns+` FROM download_jobs WHERE id=$1`, id))
+}
+
+func (s *Store) GetSucceededJob(ctx context.Context, id int64) (Job, error) {
+	return scanJob(s.pool.QueryRow(ctx, `SELECT `+jobColumns+` FROM download_jobs WHERE id=$1 AND status='succeeded'`, id))
+}
+
+func (s *Store) ListSucceededJobs(ctx context.Context, limit int) ([]Job, error) {
+	if limit <= 0 {
+		return nil, errors.New("limit must be positive")
+	}
+	rows, err := s.pool.Query(ctx, `SELECT `+jobColumns+` FROM download_jobs
+		WHERE status='succeeded' ORDER BY finished_at DESC NULLS LAST, id DESC LIMIT $1`, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var jobs []Job
+	for rows.Next() {
+		job, err := scanJob(rows)
+		if err != nil {
+			return nil, err
+		}
+		jobs = append(jobs, job)
+	}
+	return jobs, rows.Err()
+}
+
+func (s *Store) ListLibrarySeries(ctx context.Context) ([]LibrarySeries, error) {
+	rows, err := s.pool.Query(ctx, `WITH totals AS (
+		SELECT series_id, count(*) AS episode_count,
+			COALESCE(sum(file_size_bytes), 0) AS total_size_bytes
+		FROM download_jobs WHERE status='succeeded' GROUP BY series_id
+	), latest AS (
+		SELECT DISTINCT ON (series_id) series_id, series_title, title,
+			broadcaster_name, thumbnail_path, finished_at, id
+		FROM download_jobs WHERE status='succeeded'
+		ORDER BY series_id, finished_at DESC NULLS LAST, id DESC
+	)
+	SELECT l.series_id, l.series_title, l.title, l.broadcaster_name,
+		l.thumbnail_path, t.episode_count, t.total_size_bytes, l.finished_at,
+		EXISTS (SELECT 1 FROM subscriptions s WHERE s.series_id=l.series_id)
+	FROM latest l JOIN totals t USING (series_id)
+	ORDER BY l.finished_at DESC NULLS LAST, l.id DESC`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var result []LibrarySeries
+	for rows.Next() {
+		var item LibrarySeries
+		if err := rows.Scan(&item.SeriesID, &item.SeriesTitle, &item.LatestTitle,
+			&item.BroadcasterName, &item.ThumbnailPath, &item.EpisodeCount,
+			&item.TotalSizeBytes, &item.LatestFinishedAt, &item.Subscribed); err != nil {
+			return nil, err
+		}
+		result = append(result, item)
+	}
+	return result, rows.Err()
+}
+
+func (s *Store) ListSucceededJobsBySeries(ctx context.Context, seriesID string) ([]Job, error) {
+	if seriesID == "" {
+		return nil, errors.New("series ID must not be empty")
+	}
+	rows, err := s.pool.Query(ctx, `SELECT `+jobColumns+` FROM download_jobs
+		WHERE status='succeeded' AND series_id=$1
+		ORDER BY finished_at DESC NULLS LAST, id DESC`, seriesID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var jobs []Job
+	for rows.Next() {
+		job, err := scanJob(rows)
+		if err != nil {
+			return nil, err
+		}
+		jobs = append(jobs, job)
+	}
+	return jobs, rows.Err()
+}
+
+func (s *Store) ListSucceededJobsByIDs(ctx context.Context, ids []int64) ([]Job, error) {
+	if len(ids) == 0 {
+		return []Job{}, nil
+	}
+	return s.listSucceededJobs(ctx, `id = ANY($1)`, ids)
+}
+
+func (s *Store) ListSucceededJobsBySeriesIDs(ctx context.Context, seriesIDs []string) ([]Job, error) {
+	if len(seriesIDs) == 0 {
+		return []Job{}, nil
+	}
+	return s.listSucceededJobs(ctx, `series_id = ANY($1)`, seriesIDs)
+}
+
+func (s *Store) listSucceededJobs(ctx context.Context, condition string, value any) ([]Job, error) {
+	rows, err := s.pool.Query(ctx, `SELECT `+jobColumns+` FROM download_jobs
+		WHERE status='succeeded' AND `+condition+`
+		ORDER BY id`, value)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var jobs []Job
+	for rows.Next() {
+		job, err := scanJob(rows)
+		if err != nil {
+			return nil, err
+		}
+		jobs = append(jobs, job)
+	}
+	return jobs, rows.Err()
+}
+
+func (s *Store) DeleteSucceededJob(ctx context.Context, id int64) error {
+	tag, err := s.pool.Exec(ctx, `DELETE FROM download_jobs WHERE id=$1 AND status='succeeded'`, id)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+// Retry は失敗・中断されたジョブの実行時情報を消して再投入する。
+func (s *Store) Retry(ctx context.Context, id int64) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='queued', phase=NULL,
+		downloaded_bytes=NULL, total_bytes=NULL, total_is_estimate=false, speed_bps=NULL,
+		eta_seconds=NULL, fragment_index=NULL, fragment_count=NULL, format_id=NULL,
+		error_kind=NULL, error_message=NULL, heartbeat_at=NULL, started_at=NULL,
+		finished_at=NULL, updated_at=now()
+		WHERE id=$1 AND status IN ('failed','canceled')`, id)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+// RetryEpisode はエピソード ID で失敗・中断されたジョブを再投入する。
+func (s *Store) RetryEpisode(ctx context.Context, episodeID string) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='queued', phase=NULL,
+		downloaded_bytes=NULL, total_bytes=NULL, total_is_estimate=false, speed_bps=NULL,
+		eta_seconds=NULL, fragment_index=NULL, fragment_count=NULL, format_id=NULL,
+		error_kind=NULL, error_message=NULL, heartbeat_at=NULL, started_at=NULL,
+		finished_at=NULL, updated_at=now()
+		WHERE episode_id=$1 AND status IN ('failed','canceled')`, episodeID)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+// ClaimNext は最も古い未実行ジョブを同時 worker と重複せず取得する。
+func (s *Store) ClaimNext(ctx context.Context) (Job, error) {
+	return scanJob(s.pool.QueryRow(ctx, `WITH next AS (
+		SELECT id FROM download_jobs WHERE status='queued'
+		ORDER BY created_at, id LIMIT 1 FOR UPDATE SKIP LOCKED
+	) UPDATE download_jobs AS j SET status='running', attempts=j.attempts+1,
+		started_at=now(), heartbeat_at=now(), updated_at=now()
+		FROM next WHERE j.id=next.id RETURNING `+claimedJobColumns))
+}
+
+func (s *Store) UpdateProgress(ctx context.Context, id int64, p Progress) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET phase=$2, downloaded_bytes=$3,
+		total_bytes=$4, total_is_estimate=$5, speed_bps=$6, eta_seconds=$7,
+		fragment_index=$8, fragment_count=$9, format_id=$10,
+		heartbeat_at=now(), updated_at=now() WHERE id=$1 AND status='running'`,
+		id, p.Phase, p.DownloadedBytes, p.TotalBytes, p.TotalIsEstimate,
+		p.SpeedBPS, p.ETASeconds, p.FragmentIndex, p.FragmentCount, p.FormatID)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+// Heartbeat は進捗出力がない間も実行中ジョブの生存を記録する。
+func (s *Store) Heartbeat(ctx context.Context, id int64) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET heartbeat_at=now(), updated_at=now()
+		WHERE id=$1 AND status='running'`, id)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+func (s *Store) Complete(ctx context.Context, id int64, filePath string, fileSizeBytes int64) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='succeeded', phase=NULL,
+		file_path=$2, file_size_bytes=$3, heartbeat_at=NULL, finished_at=now(), updated_at=now()
+		WHERE id=$1 AND status='running'`, id, filePath, fileSizeBytes)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+func (s *Store) Fail(ctx context.Context, id int64, kind, message string) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='failed', phase=NULL,
+		error_kind=$2, error_message=$3, heartbeat_at=NULL, finished_at=now(), updated_at=now()
+		WHERE id=$1 AND status='running'`, id, kind, message)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+func (s *Store) Cancel(ctx context.Context, id int64) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='canceled', phase=NULL,
+		error_kind='canceled', heartbeat_at=NULL, finished_at=now(), updated_at=now()
+		WHERE id=$1 AND status IN ('queued','running')`, id)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+// CancelQueued は worker 未着手のジョブだけを取り消す。
+func (s *Store) CancelQueued(ctx context.Context, id int64) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='canceled', phase=NULL,
+		error_kind='canceled', heartbeat_at=NULL, finished_at=now(), updated_at=now()
+		WHERE id=$1 AND status='queued'`, id)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+// RequeueStale は cutoff より前に heartbeat が止まった実行中ジョブを戻す。
+func (s *Store) RequeueStale(ctx context.Context, cutoff time.Time) (int64, error) {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='queued', phase=NULL,
+		downloaded_bytes=NULL, total_bytes=NULL, total_is_estimate=false, speed_bps=NULL,
+		eta_seconds=NULL, fragment_index=NULL, fragment_count=NULL, format_id=NULL,
+		heartbeat_at=NULL, started_at=NULL, updated_at=now()
+		WHERE status='running' AND heartbeat_at < $1`, cutoff)
+	return tag.RowsAffected(), err
+}
+
+// RequeueRunning は worker の正常終了時に担当中ジョブを待機中へ戻す。
+func (s *Store) RequeueRunning(ctx context.Context, id int64) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE download_jobs SET status='queued', phase=NULL,
+		downloaded_bytes=NULL, total_bytes=NULL, total_is_estimate=false, speed_bps=NULL,
+		eta_seconds=NULL, fragment_index=NULL, fragment_count=NULL, format_id=NULL,
+		heartbeat_at=NULL, started_at=NULL, updated_at=now()
+		WHERE id=$1 AND status='running'`, id)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+func transitionResult(count int64, err error) error {
+	if err != nil {
+		return err
+	}
+	if count == 0 {
+		return ErrInvalidTransition
+	}
+	return nil
+}
+
+// ListJobs は指定状態のジョブを新しい順に返す。空の状態は全件を意味する。
+func (s *Store) ListJobs(ctx context.Context, status string, limit int) ([]Job, error) {
+	if status != "" && status != "queued" && status != "running" && status != "succeeded" && status != "failed" && status != "canceled" {
+		return nil, fmt.Errorf("invalid status: %s", status)
+	}
+	if limit <= 0 {
+		return nil, errors.New("limit must be positive")
+	}
+	rows, err := s.pool.Query(ctx, `SELECT `+jobColumns+` FROM download_jobs
+		WHERE ($1='' OR status=$1) ORDER BY created_at DESC, id DESC LIMIT $2`, status, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var jobs []Job
+	for rows.Next() {
+		job, err := scanJob(rows)
+		if err != nil {
+			return nil, err
+		}
+		jobs = append(jobs, job)
+	}
+	return jobs, rows.Err()
+}
+
+func (s *Store) EpisodeStatuses(ctx context.Context, ids []string) (map[string]string, error) {
+	result := make(map[string]string)
+	if len(ids) == 0 {
+		return result, nil
+	}
+	rows, err := s.pool.Query(ctx, `SELECT episode_id, status FROM download_jobs WHERE episode_id = ANY($1)`, ids)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var id, status string
+		if err := rows.Scan(&id, &status); err != nil {
+			return nil, err
+		}
+		result[id] = status
+	}
+	return result, rows.Err()
+}
+
+func (s *Store) DeleteSubscription(ctx context.Context, seriesID string) (bool, error) {
+	tag, err := s.pool.Exec(ctx, `DELETE FROM subscriptions WHERE series_id=$1`, seriesID)
+	return tag.RowsAffected() == 1, err
+}
+
+func (s *Store) ListSubscriptions(ctx context.Context) ([]Subscription, error) {
+	rows, err := s.pool.Query(ctx, `SELECT s.series_id, s.series_title, s.enabled, s.created_at, s.last_checked_at,
+		s.last_check_error_at, s.last_check_error,
+		(SELECT count(*) FROM download_jobs j WHERE j.series_id=s.series_id)
+		FROM subscriptions s ORDER BY s.created_at DESC, s.series_id`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var subs []Subscription
+	for rows.Next() {
+		var sub Subscription
+		if err := rows.Scan(&sub.SeriesID, &sub.SeriesTitle, &sub.Enabled, &sub.CreatedAt, &sub.LastCheckedAt,
+			&sub.LastCheckErrorAt, &sub.LastCheckError, &sub.JobCount); err != nil {
+			return nil, err
+		}
+		subs = append(subs, sub)
+	}
+	return subs, rows.Err()
+}
+
+func (s *Store) SetSubscriptionChecked(ctx context.Context, seriesID string, checkedAt time.Time) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE subscriptions SET last_checked_at=$2 WHERE series_id=$1`, seriesID, checkedAt)
+	return transitionResult(tag.RowsAffected(), err)
+}

internal/store/store_test.go

@@ -0,0 +1,766 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	embeddedpostgres "github.com/fergusstrange/embedded-postgres"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+var adminPool *pgxpool.Pool
+var testPort int
+var dbSequence atomic.Uint64
+
+func TestMain(m *testing.M) {
+	root, err := os.MkdirTemp("/private/tmp", "tver-pg17-")
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	testPort = listener.Addr().(*net.TCPAddr).Port
+	listener.Close()
+	config := embeddedpostgres.DefaultConfig().Version(embeddedpostgres.V17).
+		Port(uint32(testPort)).CachePath("/private/tmp/tver-embedded-pg-cache").
+		RuntimePath(filepath.Join(root, "runtime")).DataPath(filepath.Join(root, "data")).
+		Logger(io.Discard).StartTimeout(60 * time.Second)
+	db := embeddedpostgres.NewDatabase(config)
+	if err := db.Start(); err != nil {
+		fmt.Fprintf(os.Stderr, "embedded Postgres 17 start: %v\n", err)
+		_ = os.RemoveAll(root)
+		os.Exit(1)
+	}
+	adminPool, err = pgxpool.New(context.Background(), config.GetConnectionURL())
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		_ = db.Stop()
+		_ = os.RemoveAll(root)
+		os.Exit(1)
+	}
+	code := m.Run()
+	adminPool.Close()
+	if err := db.Stop(); err != nil {
+		fmt.Fprintf(os.Stderr, "embedded Postgres 17 stop: %v\n", err)
+		code = 1
+	}
+	_ = os.RemoveAll(root)
+	os.Exit(code)
+}
+
+func testPool(t *testing.T, migrate bool) *pgxpool.Pool {
+	t.Helper()
+	name := fmt.Sprintf("tver_test_%d", dbSequence.Add(1))
+	ctx := context.Background()
+	if _, err := adminPool.Exec(ctx, `CREATE DATABASE `+name); err != nil {
+		t.Fatal(err)
+	}
+	url := fmt.Sprintf("postgres://postgres:postgres@localhost:%d/%s", testPort, name)
+	pool, err := pgxpool.New(ctx, url)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		pool.Close()
+		if _, err := adminPool.Exec(ctx, `DROP DATABASE `+name); err != nil {
+			t.Error(err)
+		}
+	})
+	if migrate {
+		if err := Migrate(ctx, pool); err != nil {
+			t.Fatal(err)
+		}
+	}
+	return pool
+}
+
+func sampleEpisode(id string) Episode {
+	end := time.Date(2026, 10, 4, 12, 0, 0, 0, time.UTC)
+	return Episode{ID: id, SeriesID: "series-1", SeriesTitle: "番組", Title: "第1話",
+		BroadcasterName: "放送局", DurationSeconds: 300, EndAt: &end, ThumbnailPath: "/thumb.jpg"}
+}
+
+func TestMigrate(t *testing.T) {
+	pool := testPool(t, false)
+	ctx := context.Background()
+	if err := Migrate(ctx, pool); err != nil {
+		t.Fatal(err)
+	}
+	var first time.Time
+	if err := pool.QueryRow(ctx, `SELECT applied_at FROM schema_migrations WHERE version='migrations/001_initial.sql'`).Scan(&first); err != nil {
+		t.Fatal(err)
+	}
+	if err := Migrate(ctx, pool); err != nil {
+		t.Fatal(err)
+	}
+	var count int
+	var second time.Time
+	if err := pool.QueryRow(ctx, `SELECT count(*), min(applied_at) FROM schema_migrations`).Scan(&count, &second); err != nil {
+		t.Fatal(err)
+	}
+	if count != 3 || !first.Equal(second) {
+		t.Fatalf("再適用で履歴が変わった: %d %v %v", count, first, second)
+	}
+}
+
+func TestMigrateConcurrent(t *testing.T) {
+	pool := testPool(t, false)
+	const workers = 8
+	errCh := make(chan error, workers)
+	var wg sync.WaitGroup
+	for range workers {
+		wg.Add(1)
+		go func() { defer wg.Done(); errCh <- Migrate(context.Background(), pool) }()
+	}
+	wg.Wait()
+	close(errCh)
+	for err := range errCh {
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+	var count int
+	if err := pool.QueryRow(context.Background(), `SELECT count(*) FROM schema_migrations`).Scan(&count); err != nil {
+		t.Fatal(err)
+	}
+	if count != 3 {
+		t.Fatalf("適用件数: %d", count)
+	}
+}
+
+func TestMigrateAddsKnownEpisodesToExistingDatabase(t *testing.T) {
+	pool := testPool(t, false)
+	ctx := context.Background()
+	initial, err := migrations.ReadFile("migrations/001_initial.sql")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, string(initial), pgx.QueryExecModeSimpleProtocol); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, `CREATE TABLE schema_migrations (version TEXT PRIMARY KEY, applied_at TIMESTAMPTZ NOT NULL DEFAULT now())`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, `INSERT INTO schema_migrations (version) VALUES ('migrations/001_initial.sql')`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, `INSERT INTO subscriptions (series_id, series_title) VALUES ('existing', '既存番組')`); err != nil {
+		t.Fatal(err)
+	}
+	if err := Migrate(ctx, pool); err != nil {
+		t.Fatal(err)
+	}
+	var count int
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM schema_migrations`).Scan(&count); err != nil || count != 3 {
+		t.Fatalf("移行履歴: %d %v", count, err)
+	}
+	if _, err := pool.Exec(ctx, `INSERT INTO known_episodes (series_id, episode_id) VALUES ('existing', 'ep1')`); err != nil {
+		t.Fatalf("既存番組への既知記録: %v", err)
+	}
+	if _, err := pool.Exec(ctx, `DELETE FROM subscriptions WHERE series_id='existing'`); err != nil {
+		t.Fatal(err)
+	}
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM known_episodes WHERE series_id='existing'`).Scan(&count); err != nil || count != 0 {
+		t.Fatalf("アップグレード後の cascade: %d %v", count, err)
+	}
+}
+
+func TestMigrateAddsSubscriptionCheckErrorsToVersionTwoDatabase(t *testing.T) {
+	pool := testPool(t, false)
+	ctx := context.Background()
+	for _, name := range []string{"migrations/001_initial.sql", "migrations/002_known_episodes.sql"} {
+		sql, err := migrations.ReadFile(name)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if _, err := pool.Exec(ctx, string(sql), pgx.QueryExecModeSimpleProtocol); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if _, err := pool.Exec(ctx, `CREATE TABLE schema_migrations (version TEXT PRIMARY KEY, applied_at TIMESTAMPTZ NOT NULL DEFAULT now())`); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, `INSERT INTO schema_migrations (version) VALUES ('migrations/001_initial.sql'), ('migrations/002_known_episodes.sql')`); err != nil {
+		t.Fatal(err)
+	}
+	checked := time.Date(2026, 10, 1, 2, 3, 4, 0, time.UTC)
+	if _, err := pool.Exec(ctx, `INSERT INTO subscriptions (series_id, series_title, last_checked_at) VALUES ('existing-v2', '既存番組', $1)`, checked); err != nil {
+		t.Fatal(err)
+	}
+	if err := Migrate(ctx, pool); err != nil {
+		t.Fatal(err)
+	}
+	var title string
+	var last time.Time
+	var errorAt, errorMessage any
+	if err := pool.QueryRow(ctx, `SELECT series_title, last_checked_at, last_check_error_at, last_check_error FROM subscriptions WHERE series_id='existing-v2'`).Scan(&title, &last, &errorAt, &errorMessage); err != nil || title != "既存番組" || !last.Equal(checked) || errorAt != nil || errorMessage != nil {
+		t.Fatalf("v2データ保持と追加列: title=%q last=%v errorAt=%v error=%v err=%v", title, last, errorAt, errorMessage, err)
+	}
+	var indexDef string
+	if err := pool.QueryRow(ctx, `SELECT indexdef FROM pg_indexes WHERE schemaname=current_schema() AND indexname='subscriptions_due_idx'`).Scan(&indexDef); err != nil || !strings.Contains(indexDef, "last_checked_at") || !strings.Contains(indexDef, "WHERE enabled") {
+		t.Fatalf("期限抽出索引: %q %v", indexDef, err)
+	}
+	var versions int
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM schema_migrations`).Scan(&versions); err != nil || versions != 3 {
+		t.Fatalf("移行履歴: %d %v", versions, err)
+	}
+}
+
+func TestDownloadJobIndexes(t *testing.T) {
+	pool := testPool(t, true)
+	rows, err := pool.Query(context.Background(), `SELECT indexname, indexdef FROM pg_indexes WHERE schemaname=current_schema() AND tablename='download_jobs'`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+	indexes := make(map[string]string)
+	for rows.Next() {
+		var name, definition string
+		if err := rows.Scan(&name, &definition); err != nil {
+			t.Fatal(err)
+		}
+		indexes[name] = definition
+	}
+	if err := rows.Err(); err != nil {
+		t.Fatal(err)
+	}
+	checks := map[string][]string{
+		"download_jobs_episode_id_key":    {"UNIQUE", "(episode_id)"},
+		"download_jobs_claim_idx":         {"(created_at, id)", "status = 'queued'"},
+		"download_jobs_status_newest_idx": {"(status, created_at DESC, id DESC)"},
+		"download_jobs_stale_idx":         {"(heartbeat_at)", "status = 'running'"},
+	}
+	for name, parts := range checks {
+		definition := indexes[name]
+		for _, part := range parts {
+			if !strings.Contains(definition, part) {
+				t.Errorf("索引 %s に %q がない: %q", name, part, definition)
+			}
+		}
+	}
+}
+
+func TestEnqueueAndListing(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	first, created, err := s.Enqueue(ctx, sampleEpisode("ep1"), "manual")
+	if err != nil || !created || first.Status != "queued" || first.Source != "manual" || first.DurationSeconds != 300 || first.EndAt == nil {
+		t.Fatalf("enqueue: %+v %v %v", first, created, err)
+	}
+	again, created, err := s.Enqueue(ctx, sampleEpisode("ep1"), "subscription")
+	if err != nil || created || again.ID != first.ID || again.Source != "manual" {
+		t.Fatalf("重複: %+v %v %v", again, created, err)
+	}
+	second, _, err := s.Enqueue(ctx, sampleEpisode("ep2"), "subscription")
+	if err != nil {
+		t.Fatal(err)
+	}
+	jobs, err := s.ListJobs(ctx, "queued", 10)
+	if err != nil || len(jobs) != 2 || jobs[0].ID != second.ID {
+		t.Fatalf("list: %+v %v", jobs, err)
+	}
+	statuses, err := s.EpisodeStatuses(ctx, []string{"ep1", "ep2", "absent"})
+	if err != nil || len(statuses) != 2 || statuses["ep1"] != "queued" {
+		t.Fatalf("statuses: %+v %v", statuses, err)
+	}
+	if _, err := s.ListJobs(ctx, "bad", 10); err == nil {
+		t.Fatal("不正な状態を許した")
+	}
+	if _, _, err := s.Enqueue(ctx, sampleEpisode("bad"), "invalid"); err == nil {
+		t.Fatal("source CHECK を許した")
+	}
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET phase='bad' WHERE id=$1`, first.ID); err == nil {
+		t.Fatal("phase CHECK を許した")
+	}
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET status='bad' WHERE id=$1`, first.ID); err == nil {
+		t.Fatal("status CHECK を許した")
+	}
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET error_kind='bad' WHERE id=$1`, first.ID); err == nil {
+		t.Fatal("error CHECK を許した")
+	}
+}
+
+func TestTransitions(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	job, _, err := s.Enqueue(ctx, sampleEpisode("ep1"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.UpdateProgress(ctx, job.ID, Progress{Phase: "video"}); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("queued progress: %v", err)
+	}
+	if err := s.Complete(ctx, job.ID, "/file.mp4", 100); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("queued complete: %v", err)
+	}
+	if err := s.Fail(ctx, job.ID, "network", "failed"); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("queued fail: %v", err)
+	}
+	if err := s.Retry(ctx, job.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("queued retry: %v", err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil || claimed.ID != job.ID || claimed.Status != "running" || claimed.Attempts != 1 || claimed.HeartbeatAt == nil || claimed.StartedAt == nil {
+		t.Fatalf("claim: %+v %v", claimed, err)
+	}
+	oldHeartbeat := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET heartbeat_at=$2 WHERE id=$1`, job.ID, oldHeartbeat); err != nil {
+		t.Fatal(err)
+	}
+	bytes := int64(123)
+	total := int64(1000)
+	speed := 40.5
+	eta := 12.0
+	fragment := int32(2)
+	fragments := int32(10)
+	format := "video-1"
+	if err := s.UpdateProgress(ctx, job.ID, Progress{Phase: "video", DownloadedBytes: &bytes,
+		TotalBytes: &total, TotalIsEstimate: true, SpeedBPS: &speed, ETASeconds: &eta,
+		FragmentIndex: &fragment, FragmentCount: &fragments, FormatID: &format}); err != nil {
+		t.Fatal(err)
+	}
+	progressed, err := s.GetJob(ctx, job.ID)
+	if err != nil || progressed.Phase == nil || *progressed.Phase != "video" || progressed.DownloadedBytes == nil || *progressed.DownloadedBytes != bytes || progressed.TotalBytes == nil || *progressed.TotalBytes != total || !progressed.TotalIsEstimate || progressed.SpeedBPS == nil || *progressed.SpeedBPS != speed || progressed.ETASeconds == nil || *progressed.ETASeconds != eta || progressed.FragmentIndex == nil || *progressed.FragmentIndex != fragment || progressed.FragmentCount == nil || *progressed.FragmentCount != fragments || progressed.FormatID == nil || *progressed.FormatID != format || progressed.HeartbeatAt == nil || !progressed.HeartbeatAt.After(oldHeartbeat) {
+		t.Fatalf("progress: %+v %v", progressed, err)
+	}
+	if err := s.Fail(ctx, job.ID, "network", "connection lost"); err != nil {
+		t.Fatal(err)
+	}
+	failed, err := s.GetJob(ctx, job.ID)
+	if err != nil || failed.Status != "failed" || failed.ErrorKind == nil || *failed.ErrorKind != "network" || failed.ErrorMessage == nil || *failed.ErrorMessage != "connection lost" || failed.HeartbeatAt != nil || failed.FinishedAt == nil {
+		t.Fatalf("fail: %+v %v", failed, err)
+	}
+	if err := s.UpdateProgress(ctx, job.ID, Progress{Phase: "audio"}); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("failed progress: %v", err)
+	}
+	if err := s.Retry(ctx, job.ID); err != nil {
+		t.Fatal(err)
+	}
+	retried, err := s.GetJob(ctx, job.ID)
+	if err != nil || retried.Status != "queued" || retried.Phase != nil || retried.ErrorKind != nil || retried.ErrorMessage != nil || retried.DownloadedBytes != nil || retried.TotalBytes != nil || retried.TotalIsEstimate || retried.SpeedBPS != nil || retried.ETASeconds != nil || retried.FragmentIndex != nil || retried.FragmentCount != nil || retried.FormatID != nil || retried.HeartbeatAt != nil || retried.StartedAt != nil || retried.FinishedAt != nil || retried.Attempts != 1 {
+		t.Fatalf("retry: %+v %v", retried, err)
+	}
+	claimed, err = s.ClaimNext(ctx)
+	if err != nil || claimed.Attempts != 2 {
+		t.Fatalf("reclaim: %+v %v", claimed, err)
+	}
+	if err := s.Complete(ctx, job.ID, "/file.mp4", 100); err != nil {
+		t.Fatal(err)
+	}
+	completed, err := s.GetJob(ctx, job.ID)
+	if err != nil || completed.Status != "succeeded" || completed.Phase != nil || completed.HeartbeatAt != nil || completed.FinishedAt == nil || completed.FilePath == nil || *completed.FilePath != "/file.mp4" || completed.FileSizeBytes == nil || *completed.FileSizeBytes != 100 {
+		t.Fatalf("complete: %+v %v", completed, err)
+	}
+	if err := s.Cancel(ctx, job.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("succeeded cancel: %v", err)
+	}
+	if err := s.Retry(ctx, job.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("succeeded retry: %v", err)
+	}
+	if _, err := s.ClaimNext(ctx); !errors.Is(err, pgx.ErrNoRows) {
+		t.Fatalf("empty queue: %v", err)
+	}
+}
+
+func TestCancelAndStaleBoundary(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	queued, _, err := s.Enqueue(ctx, sampleEpisode("queued"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Cancel(ctx, queued.ID); err != nil {
+		t.Fatal(err)
+	}
+	canceled, err := s.GetJob(ctx, queued.ID)
+	if err != nil || canceled.Status != "canceled" || canceled.ErrorKind == nil || *canceled.ErrorKind != "canceled" {
+		t.Fatalf("cancel: %+v %v", canceled, err)
+	}
+	if err := s.Retry(ctx, queued.ID); err != nil {
+		t.Fatal(err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Cancel(ctx, claimed.ID); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Complete(ctx, claimed.ID, "/late.mp4", 1); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("canceled complete: %v", err)
+	}
+	if err := s.Retry(ctx, claimed.ID); err != nil {
+		t.Fatal(err)
+	}
+	claimed, err = s.ClaimNext(ctx)
+	if err != nil || claimed.Attempts != 2 {
+		t.Fatalf("cancel retry claim: %+v %v", claimed, err)
+	}
+	cutoff := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET heartbeat_at=$2 WHERE id=$1`, claimed.ID, cutoff); err != nil {
+		t.Fatal(err)
+	}
+	fresh, _, err := s.Enqueue(ctx, sampleEpisode("fresh"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.ClaimNext(ctx); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET heartbeat_at=$2 WHERE id=$1`, fresh.ID, cutoff.Add(time.Hour)); err != nil {
+		t.Fatal(err)
+	}
+	n, err := s.RequeueStale(ctx, cutoff)
+	if err != nil || n != 0 {
+		t.Fatalf("境界上: %d %v", n, err)
+	}
+	n, err = s.RequeueStale(ctx, cutoff.Add(time.Microsecond))
+	if err != nil || n != 1 {
+		t.Fatalf("境界後: %d %v", n, err)
+	}
+	job, err := s.GetJob(ctx, claimed.ID)
+	if err != nil || job.Status != "queued" || job.HeartbeatAt != nil || job.Attempts != 2 {
+		t.Fatalf("requeue: %+v %v", job, err)
+	}
+	stillRunning, err := s.GetJob(ctx, fresh.ID)
+	if err != nil || stillRunning.Status != "running" || stillRunning.HeartbeatAt == nil || !stillRunning.HeartbeatAt.Equal(cutoff.Add(time.Hour)) {
+		t.Fatalf("新しい heartbeat を持つジョブ: %+v %v", stillRunning, err)
+	}
+}
+
+func TestHeartbeatAndGracefulRequeue(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	job, _, err := s.Enqueue(ctx, sampleEpisode("heartbeat"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Heartbeat(ctx, job.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("待機中の heartbeat: %v", err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	old := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+	if _, err := s.pool.Exec(ctx, `UPDATE download_jobs SET heartbeat_at=$2 WHERE id=$1`, claimed.ID, old); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Heartbeat(ctx, claimed.ID); err != nil {
+		t.Fatal(err)
+	}
+	heartbeated, err := s.GetJob(ctx, claimed.ID)
+	if err != nil || heartbeated.HeartbeatAt == nil || !heartbeated.HeartbeatAt.After(old) {
+		t.Fatalf("heartbeat: %+v %v", heartbeated, err)
+	}
+	bytes := int64(10)
+	if err := s.UpdateProgress(ctx, claimed.ID, Progress{Phase: "video", DownloadedBytes: &bytes}); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.RequeueRunning(ctx, claimed.ID); err != nil {
+		t.Fatal(err)
+	}
+	requeued, err := s.GetJob(ctx, claimed.ID)
+	if err != nil || requeued.Status != "queued" || requeued.StartedAt != nil || requeued.HeartbeatAt != nil || requeued.Phase != nil || requeued.DownloadedBytes != nil || requeued.Attempts != 1 {
+		t.Fatalf("graceful requeue: %+v %v", requeued, err)
+	}
+	if err := s.RequeueRunning(ctx, claimed.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("待機中の再復帰: %v", err)
+	}
+}
+
+func TestRejectedTransitions(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	operations := map[string]func(int64) error{
+		"progress": func(id int64) error { return s.UpdateProgress(ctx, id, Progress{Phase: "video"}) },
+		"complete": func(id int64) error { return s.Complete(ctx, id, "/file.mp4", 1) },
+		"fail":     func(id int64) error { return s.Fail(ctx, id, "network", "error") },
+		"cancel":   func(id int64) error { return s.Cancel(ctx, id) },
+		"retry":    func(id int64) error { return s.Retry(ctx, id) },
+	}
+	for status, rejected := range map[string][]string{
+		"queued":    {"progress", "complete", "fail", "retry"},
+		"running":   {"retry"},
+		"succeeded": {"progress", "complete", "fail", "cancel", "retry"},
+		"failed":    {"progress", "complete", "fail", "cancel"},
+		"canceled":  {"progress", "complete", "fail", "cancel"},
+	} {
+		t.Run(status, func(t *testing.T) {
+			job, _, err := s.Enqueue(ctx, sampleEpisode("rejected-"+status), "manual")
+			if err != nil {
+				t.Fatal(err)
+			}
+			if _, err := pool.Exec(ctx, `UPDATE download_jobs SET status=$2 WHERE id=$1`, job.ID, status); err != nil {
+				t.Fatal(err)
+			}
+			for _, name := range rejected {
+				if err := operations[name](job.ID); !errors.Is(err, ErrInvalidTransition) {
+					t.Errorf("%s on %s: %v", name, status, err)
+				}
+			}
+			got, err := s.GetJob(ctx, job.ID)
+			if err != nil || got.Status != status {
+				t.Fatalf("拒否後の状態: %+v %v", got, err)
+			}
+		})
+	}
+}
+
+func TestRetryEpisode(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	job, _, err := s.Enqueue(ctx, sampleEpisode("retry-by-episode"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.RetryEpisode(ctx, job.EpisodeID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("待機中の再試行: %v", err)
+	}
+	if err := s.Cancel(ctx, job.ID); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.RetryEpisode(ctx, job.EpisodeID); err != nil {
+		t.Fatal(err)
+	}
+	got, err := s.GetJob(ctx, job.ID)
+	if err != nil || got.Status != "queued" || got.ErrorKind != nil || got.FinishedAt != nil {
+		t.Fatalf("エピソード ID による再試行: %+v %v", got, err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	downloaded, total := int64(10), int64(20)
+	format := "video-1"
+	if err := s.UpdateProgress(ctx, claimed.ID, Progress{
+		Phase: "video", DownloadedBytes: &downloaded, TotalBytes: &total,
+		TotalIsEstimate: true, FormatID: &format,
+	}); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.Fail(ctx, claimed.ID, "network", "通信失敗"); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.RetryEpisode(ctx, job.EpisodeID); err != nil {
+		t.Fatalf("失敗からの再試行: %v", err)
+	}
+	got, err = s.GetJob(ctx, job.ID)
+	if err != nil || got.Status != "queued" || got.Phase != nil || got.DownloadedBytes != nil || got.TotalBytes != nil || got.TotalIsEstimate || got.FormatID != nil || got.ErrorKind != nil || got.ErrorMessage != nil || got.HeartbeatAt != nil || got.StartedAt != nil || got.FinishedAt != nil || got.Attempts != 1 {
+		t.Fatalf("失敗情報の消去: %+v %v", got, err)
+	}
+	if err := s.RetryEpisode(ctx, "unknown"); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("存在しないエピソード: %v", err)
+	}
+}
+
+func TestCancelQueuedDoesNotCancelRunning(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	queued, _, err := s.Enqueue(ctx, sampleEpisode("queue-cancel"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.CancelQueued(ctx, queued.ID); err != nil {
+		t.Fatal(err)
+	}
+	canceled, err := s.GetJob(ctx, queued.ID)
+	if err != nil || canceled.Status != "canceled" || canceled.ErrorKind == nil || *canceled.ErrorKind != "canceled" || canceled.FinishedAt == nil {
+		t.Fatalf("待機中の取り消し: %+v %v", canceled, err)
+	}
+	if err := s.CancelQueued(ctx, queued.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("再取り消し: %v", err)
+	}
+	if err := s.CancelQueued(ctx, -1); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("存在しないジョブの取り消し: %v", err)
+	}
+	if err := s.Retry(ctx, queued.ID); err != nil {
+		t.Fatal(err)
+	}
+	claimed, err := s.ClaimNext(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := s.CancelQueued(ctx, claimed.ID); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("実行中の取り消し: %v", err)
+	}
+	job, err := s.GetJob(ctx, claimed.ID)
+	if err != nil || job.Status != "running" {
+		t.Fatalf("実行中の状態: %+v %v", job, err)
+	}
+}
+
+func TestClaimNextConcurrent(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	const jobs = 12
+	for i := range jobs {
+		if _, _, err := s.Enqueue(ctx, sampleEpisode(fmt.Sprintf("ep%d", i)), "manual"); err != nil {
+			t.Fatal(err)
+		}
+	}
+	results := make(chan int64, jobs)
+	errCh := make(chan error, jobs)
+	var wg sync.WaitGroup
+	for range jobs {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			job, err := s.ClaimNext(ctx)
+			if err != nil {
+				errCh <- err
+				return
+			}
+			results <- job.ID
+		}()
+	}
+	wg.Wait()
+	close(results)
+	close(errCh)
+	for err := range errCh {
+		t.Error(err)
+	}
+	seen := make(map[int64]bool)
+	for id := range results {
+		if seen[id] {
+			t.Errorf("二重 claim: %d", id)
+		}
+		seen[id] = true
+	}
+	if len(seen) != jobs {
+		t.Fatalf("claim 数: %d", len(seen))
+	}
+}
+
+func TestClaimNextSkipsLockedOldest(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	oldest, _, err := s.Enqueue(ctx, sampleEpisode("oldest"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	newer, _, err := s.Enqueue(ctx, sampleEpisode("newer"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	base := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET created_at=$2 WHERE id=$1`, oldest.ID, base); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := pool.Exec(ctx, `UPDATE download_jobs SET created_at=$2 WHERE id=$1`, newer.ID, base.Add(time.Hour)); err != nil {
+		t.Fatal(err)
+	}
+	tx, err := pool.Begin(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tx.Rollback(ctx)
+	if _, err := tx.Exec(ctx, `SELECT id FROM download_jobs WHERE id=$1 FOR UPDATE`, oldest.ID); err != nil {
+		t.Fatal(err)
+	}
+	claimCtx, cancel := context.WithTimeout(ctx, 2*time.Second)
+	defer cancel()
+	claimed, err := s.ClaimNext(claimCtx)
+	if err != nil || claimed.ID != newer.ID {
+		t.Fatalf("ロック中の最古ジョブを飛ばせない: %+v %v", claimed, err)
+	}
+	if err := tx.Rollback(ctx); err != nil {
+		t.Fatal(err)
+	}
+	claimed, err = s.ClaimNext(ctx)
+	if err != nil || claimed.ID != oldest.ID {
+		t.Fatalf("ロック解放後の最古ジョブ: %+v %v", claimed, err)
+	}
+}
+
+func TestListJobsFiltersAndLimit(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	ids := make([]int64, 3)
+	for i := range ids {
+		job, _, err := s.Enqueue(ctx, sampleEpisode(fmt.Sprintf("list-%d", i)), "manual")
+		if err != nil {
+			t.Fatal(err)
+		}
+		ids[i] = job.ID
+		created := time.Date(2026, 10, 3, i, 0, 0, 0, time.UTC)
+		if _, err := pool.Exec(ctx, `UPDATE download_jobs SET created_at=$2 WHERE id=$1`, job.ID, created); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := s.Cancel(ctx, ids[1]); err != nil {
+		t.Fatal(err)
+	}
+	all, err := s.ListJobs(ctx, "", 2)
+	if err != nil || len(all) != 2 || all[0].ID != ids[2] || all[1].ID != ids[1] {
+		t.Fatalf("全件の新しい順と上限: %+v %v", all, err)
+	}
+	queued, err := s.ListJobs(ctx, "queued", 10)
+	if err != nil || len(queued) != 2 || queued[0].ID != ids[2] || queued[1].ID != ids[0] {
+		t.Fatalf("状態別一覧: %+v %v", queued, err)
+	}
+	canceled, err := s.ListJobs(ctx, "canceled", 10)
+	if err != nil || len(canceled) != 1 || canceled[0].ID != ids[1] {
+		t.Fatalf("中断済み一覧: %+v %v", canceled, err)
+	}
+	if _, err := s.ListJobs(ctx, "", 0); err == nil {
+		t.Fatal("0 件の上限を許した")
+	}
+	statuses, err := s.EpisodeStatuses(ctx, []string{"list-0", "list-1", "absent"})
+	if err != nil || len(statuses) != 2 || statuses["list-0"] != "queued" || statuses["list-1"] != "canceled" {
+		t.Fatalf("状態の一括取得: %+v %v", statuses, err)
+	}
+}
+
+func TestSubscriptions(t *testing.T) {
+	s := New(testPool(t, true))
+	ctx := context.Background()
+	created, err := s.RegisterSubscription(ctx, "series", "番組", nil, false)
+	if err != nil || !created {
+		t.Fatalf("add: %v %v", created, err)
+	}
+	created, err = s.RegisterSubscription(ctx, "series", "別タイトル", nil, false)
+	if err != nil || created {
+		t.Fatalf("duplicate: %v %v", created, err)
+	}
+	when := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	if err := s.SetSubscriptionChecked(ctx, "series", when); err != nil {
+		t.Fatal(err)
+	}
+	subs, err := s.ListSubscriptions(ctx)
+	if err != nil || len(subs) != 1 || subs[0].SeriesTitle != "番組" || !subs[0].Enabled || subs[0].LastCheckedAt == nil || !subs[0].LastCheckedAt.Equal(when) {
+		t.Fatalf("list: %+v %v", subs, err)
+	}
+	deleted, err := s.DeleteSubscription(ctx, "series")
+	if err != nil || !deleted {
+		t.Fatalf("delete: %v %v", deleted, err)
+	}
+	deleted, err = s.DeleteSubscription(ctx, "series")
+	if err != nil || deleted {
+		t.Fatalf("duplicate delete: %v %v", deleted, err)
+	}
+	if err := s.SetSubscriptionChecked(ctx, "series", when); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("missing: %v", err)
+	}
+}

internal/store/subscriptions.go

@@ -0,0 +1,244 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+)
+
+var ErrSubscriptionPaused = errors.New("subscription is paused")
+
+// RegisterSubscription は登録と公開中の回の記録・任意の投入を一つの取引で行う。
+func (s *Store) RegisterSubscription(ctx context.Context, seriesID, title string, episodes []Episode, downloadExisting bool) (bool, error) {
+	if seriesID == "" || title == "" {
+		return false, errors.New("series id and title are required")
+	}
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return false, err
+	}
+	defer tx.Rollback(ctx)
+	var inserted string
+	err = tx.QueryRow(ctx, `INSERT INTO subscriptions (series_id, series_title, last_checked_at)
+		VALUES ($1,$2,now()) ON CONFLICT (series_id) DO NOTHING RETURNING series_id`, seriesID, title).Scan(&inserted)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+	if _, err := addKnownAndMaybeQueue(ctx, tx, seriesID, episodes, downloadExisting); err != nil {
+		return false, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+// QueueUnseenEpisodes は未確認の回だけを既知に記録し、同じ取引で待ち行列へ入れる。
+func (s *Store) QueueUnseenEpisodes(ctx context.Context, seriesID string, episodes []Episode) (int, error) {
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback(ctx)
+	var enabled bool
+	err = tx.QueryRow(ctx, `SELECT enabled FROM subscriptions WHERE series_id=$1 FOR UPDATE`, seriesID).Scan(&enabled)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return 0, ErrInvalidTransition
+	}
+	if err != nil {
+		return 0, err
+	}
+	if !enabled {
+		return 0, ErrSubscriptionPaused
+	}
+	count, err := addKnownAndMaybeQueue(ctx, tx, seriesID, episodes, true)
+	if err != nil {
+		return 0, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
+// ListDueSubscriptions は有効で、cutoff 以前に確認された（または未確認の）番組を返す。
+func (s *Store) ListDueSubscriptions(ctx context.Context, cutoff time.Time) ([]Subscription, error) {
+	rows, err := s.pool.Query(ctx, `SELECT series_id, series_title, enabled, created_at, last_checked_at,
+		last_check_error_at, last_check_error, 0::bigint
+		FROM subscriptions
+		WHERE enabled AND (last_checked_at IS NULL OR last_checked_at <= $1)
+		ORDER BY last_checked_at ASC NULLS FIRST, created_at, series_id`, cutoff)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var result []Subscription
+	for rows.Next() {
+		var sub Subscription
+		if err := rows.Scan(&sub.SeriesID, &sub.SeriesTitle, &sub.Enabled, &sub.CreatedAt,
+			&sub.LastCheckedAt, &sub.LastCheckErrorAt, &sub.LastCheckError, &sub.JobCount); err != nil {
+			return nil, err
+		}
+		result = append(result, sub)
+	}
+	return result, rows.Err()
+}
+
+// CompleteSubscriptionCheck は全公開回を既知にし、しきい値を超える未確認回だけを投入する。
+// 最終確認日時の更新と前回エラーの消去も同じ取引で行う。
+func (s *Store) CompleteSubscriptionCheck(ctx context.Context, seriesID string, episodes []Episode, previewMaxSeconds int, checkedAt time.Time) (int, error) {
+	if previewMaxSeconds < 0 {
+		return 0, errors.New("preview threshold must not be negative")
+	}
+	tx, err := s.pool.Begin(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer tx.Rollback(ctx)
+	var enabled bool
+	err = tx.QueryRow(ctx, `SELECT enabled FROM subscriptions WHERE series_id=$1 FOR UPDATE`, seriesID).Scan(&enabled)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return 0, ErrInvalidTransition
+	}
+	if err != nil {
+		return 0, err
+	}
+	if !enabled {
+		return 0, ErrSubscriptionPaused
+	}
+	queued := 0
+	for _, ep := range episodes {
+		if ep.ID == "" || ep.SeriesID != seriesID || ep.DurationSeconds < 0 {
+			return 0, fmt.Errorf("invalid episode identity for series %s", seriesID)
+		}
+		var inserted string
+		err := tx.QueryRow(ctx, `INSERT INTO known_episodes (series_id, episode_id)
+			VALUES ($1,$2) ON CONFLICT DO NOTHING RETURNING episode_id`, seriesID, ep.ID).Scan(&inserted)
+		if errors.Is(err, pgx.ErrNoRows) {
+			continue
+		}
+		if err != nil {
+			return 0, err
+		}
+		if ep.DurationSeconds <= previewMaxSeconds {
+			continue
+		}
+		tag, err := tx.Exec(ctx, `INSERT INTO download_jobs
+			(episode_id, series_id, series_title, title, broadcaster_name, duration_seconds, end_at, thumbnail_path, source)
+			VALUES ($1,$2,$3,$4,$5,$6,$7,$8,'subscription')
+			ON CONFLICT (episode_id) DO NOTHING`, ep.ID, seriesID, ep.SeriesTitle, ep.Title,
+			ep.BroadcasterName, ep.DurationSeconds, ep.EndAt, ep.ThumbnailPath)
+		if err != nil {
+			return 0, err
+		}
+		queued += int(tag.RowsAffected())
+	}
+	if _, err := tx.Exec(ctx, `UPDATE subscriptions SET last_checked_at=$2,
+		last_check_error_at=NULL, last_check_error=NULL WHERE series_id=$1`, seriesID, checkedAt); err != nil {
+		return 0, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return 0, err
+	}
+	return queued, nil
+}
+
+// RecordSubscriptionCheckFailure は取得失敗を記録し、最終確認日時は変更しない。
+func (s *Store) RecordSubscriptionCheckFailure(ctx context.Context, seriesID string, failedAt time.Time, message string) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE subscriptions SET last_check_error_at=$2, last_check_error=$3
+		WHERE series_id=$1 AND enabled`, seriesID, failedAt, message)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+func addKnownAndMaybeQueue(ctx context.Context, tx pgx.Tx, seriesID string, episodes []Episode, queue bool) (int, error) {
+	count := 0
+	for _, ep := range episodes {
+		if ep.ID == "" || ep.SeriesID != seriesID {
+			return 0, fmt.Errorf("invalid episode identity for series %s", seriesID)
+		}
+		var inserted string
+		err := tx.QueryRow(ctx, `INSERT INTO known_episodes (series_id, episode_id)
+			VALUES ($1,$2) ON CONFLICT DO NOTHING RETURNING episode_id`, seriesID, ep.ID).Scan(&inserted)
+		if errors.Is(err, pgx.ErrNoRows) {
+			continue
+		}
+		if err != nil {
+			return 0, err
+		}
+		count++
+		if queue {
+			_, err := tx.Exec(ctx, `INSERT INTO download_jobs
+				(episode_id, series_id, series_title, title, broadcaster_name, duration_seconds, end_at, thumbnail_path, source)
+				VALUES ($1,$2,$3,$4,$5,$6,$7,$8,'subscription')
+				ON CONFLICT (episode_id) DO NOTHING`, ep.ID, seriesID, ep.SeriesTitle, ep.Title,
+				ep.BroadcasterName, ep.DurationSeconds, ep.EndAt, ep.ThumbnailPath)
+			if err != nil {
+				return 0, err
+			}
+		}
+	}
+	return count, nil
+}
+
+// UnknownEpisodeIDs は指定シリーズの未確認のエピソード ID を入力順で返す。
+func (s *Store) UnknownEpisodeIDs(ctx context.Context, seriesID string, ids []string) ([]string, error) {
+	if len(ids) == 0 {
+		return []string{}, nil
+	}
+	rows, err := s.pool.Query(ctx, `SELECT episode_id FROM known_episodes WHERE series_id=$1 AND episode_id=ANY($2)`, seriesID, ids)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	known := make(map[string]bool)
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			return nil, err
+		}
+		known[id] = true
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	var unknown []string
+	emitted := make(map[string]bool)
+	for _, id := range ids {
+		if !known[id] && !emitted[id] {
+			unknown = append(unknown, id)
+			emitted[id] = true
+		}
+	}
+	return unknown, nil
+}
+
+func (s *Store) SetSubscriptionEnabled(ctx context.Context, seriesID string, enabled bool) error {
+	tag, err := s.pool.Exec(ctx, `UPDATE subscriptions SET enabled=$2 WHERE series_id=$1`, seriesID, enabled)
+	return transitionResult(tag.RowsAffected(), err)
+}
+
+func (s *Store) SubscribedSeries(ctx context.Context, ids []string) (map[string]bool, error) {
+	result := make(map[string]bool)
+	if len(ids) == 0 {
+		return result, nil
+	}
+	rows, err := s.pool.Query(ctx, `SELECT series_id FROM subscriptions WHERE series_id=ANY($1)`, ids)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var id string
+		if err := rows.Scan(&id); err != nil {
+			return nil, err
+		}
+		result[id] = true
+	}
+	return result, rows.Err()
+}

internal/store/subscriptions_test.go

@@ -0,0 +1,326 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestListDueSubscriptionsBoundaryAndPaused(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	now := time.Date(2026, 10, 3, 12, 0, 0, 0, time.UTC)
+	for _, id := range []string{"null", "old", "boundary", "fresh", "paused"} {
+		if created, err := s.RegisterSubscription(ctx, id, "番組 "+id, nil, false); err != nil || !created {
+			t.Fatalf("登録 %s: %t %v", id, created, err)
+		}
+	}
+	updates := map[string]*time.Time{
+		"null": nil, "old": timePointer(now.Add(-25 * time.Hour)),
+		"boundary": timePointer(now.Add(-24 * time.Hour)), "fresh": timePointer(now.Add(-24*time.Hour + time.Microsecond)),
+		"paused": timePointer(now.Add(-48 * time.Hour)),
+	}
+	for id, checked := range updates {
+		if _, err := pool.Exec(ctx, `UPDATE subscriptions SET last_checked_at=$2 WHERE series_id=$1`, id, checked); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := s.SetSubscriptionEnabled(ctx, "paused", false); err != nil {
+		t.Fatal(err)
+	}
+	due, err := s.ListDueSubscriptions(ctx, now.Add(-24*time.Hour))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(due) != 3 || due[0].SeriesID != "null" || due[1].SeriesID != "old" || due[2].SeriesID != "boundary" {
+		t.Fatalf("24時間境界と一時停止: %+v", due)
+	}
+}
+
+func TestCompleteSubscriptionCheckKnownPreviewErrorAndAtomicity(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	if created, err := s.RegisterSubscription(ctx, "series-check", "番組", []Episode{seriesEpisode("known", "series-check")}, false); err != nil || !created {
+		t.Fatalf("登録: %t %v", created, err)
+	}
+	before := time.Date(2026, 10, 1, 0, 0, 0, 0, time.UTC)
+	failedAt := time.Date(2026, 10, 3, 1, 2, 3, 0, time.UTC)
+	if _, err := pool.Exec(ctx, `UPDATE subscriptions SET last_checked_at=$2 WHERE series_id=$1`, "series-check", before); err != nil {
+		t.Fatal(err)
+	}
+	if err := s.RecordSubscriptionCheckFailure(ctx, "series-check", failedAt, "network token=[REDACTED]"); err != nil {
+		t.Fatal(err)
+	}
+	var unchanged time.Time
+	if err := pool.QueryRow(ctx, `SELECT last_checked_at FROM subscriptions WHERE series_id='series-check'`).Scan(&unchanged); err != nil || !unchanged.Equal(before) {
+		t.Fatalf("失敗時に最終確認を更新: %v %v", unchanged, err)
+	}
+	checkedAt := time.Date(2026, 10, 3, 4, 5, 6, 0, time.UTC)
+	preview := seriesEpisode("preview", "series-check")
+	preview.DurationSeconds = 180
+	normal := seriesEpisode("normal", "series-check")
+	normal.DurationSeconds = 181
+	count, err := s.CompleteSubscriptionCheck(ctx, "series-check", []Episode{
+		seriesEpisode("known", "series-check"), preview, normal,
+	}, 180, checkedAt)
+	if err != nil || count != 1 {
+		t.Fatalf("確認完了: count=%d err=%v", count, err)
+	}
+	unknown, err := s.UnknownEpisodeIDs(ctx, "series-check", []string{"known", "preview", "normal"})
+	if err != nil || len(unknown) != 0 {
+		t.Fatalf("予告を含む既知化: %v %v", unknown, err)
+	}
+	var jobs int
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM download_jobs WHERE series_id='series-check'`).Scan(&jobs); err != nil || jobs != 1 {
+		t.Fatalf("予告の投入除外: %d %v", jobs, err)
+	}
+	var last time.Time
+	var errorAt, errorMessage any
+	if err := pool.QueryRow(ctx, `SELECT last_checked_at, last_check_error_at, last_check_error FROM subscriptions WHERE series_id='series-check'`).Scan(&last, &errorAt, &errorMessage); err != nil || !last.Equal(checkedAt) || errorAt != nil || errorMessage != nil {
+		t.Fatalf("成功時の日時・エラー消去: %v %v %v %v", last, errorAt, errorMessage, err)
+	}
+
+	bad := seriesEpisode("bad", "series-check")
+	bad.DurationSeconds = -1
+	if _, err := s.CompleteSubscriptionCheck(ctx, "series-check", []Episode{seriesEpisode("rollback", "series-check"), bad}, 180, checkedAt.Add(time.Hour)); err == nil {
+		t.Fatal("不正な回を含む確認が成功した")
+	}
+	unknown, err = s.UnknownEpisodeIDs(ctx, "series-check", []string{"rollback"})
+	if err != nil || len(unknown) != 1 {
+		t.Fatalf("失敗時の既知記録を巻き戻さない: %v %v", unknown, err)
+	}
+	if err := pool.QueryRow(ctx, `SELECT last_checked_at FROM subscriptions WHERE series_id='series-check'`).Scan(&last); err != nil || !last.Equal(checkedAt) {
+		t.Fatalf("失敗時の最終確認を巻き戻さない: %v %v", last, err)
+	}
+	if err := s.SetSubscriptionEnabled(ctx, "series-check", false); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.CompleteSubscriptionCheck(ctx, "series-check", nil, 180, checkedAt.Add(time.Hour)); !errors.Is(err, ErrSubscriptionPaused) {
+		t.Fatalf("一時停止中の確認完了: %v", err)
+	}
+	if err := s.RecordSubscriptionCheckFailure(ctx, "series-check", failedAt, "ignored"); !errors.Is(err, ErrInvalidTransition) {
+		t.Fatalf("一時停止中のエラー記録: %v", err)
+	}
+}
+
+func TestCompleteSubscriptionCheckKeepsExistingManualJob(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	if created, err := s.RegisterSubscription(ctx, "series-manual", "番組", nil, false); err != nil || !created {
+		t.Fatalf("登録: %t %v", created, err)
+	}
+	episode := seriesEpisode("manual-existing", "series-manual")
+	manual, _, err := s.Enqueue(ctx, episode, "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	checkedAt := time.Date(2026, 10, 3, 4, 5, 6, 0, time.UTC)
+	queued, err := s.CompleteSubscriptionCheck(ctx, "series-manual", []Episode{episode, episode}, 180, checkedAt)
+	if err != nil || queued != 0 {
+		t.Fatalf("既存手動ジョブの確認: queued=%d err=%v", queued, err)
+	}
+	got, err := s.GetJob(ctx, manual.ID)
+	if err != nil || got.Source != "manual" {
+		t.Fatalf("既存手動ジョブを変更した: %+v %v", got, err)
+	}
+	var jobs, known int
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM download_jobs WHERE episode_id=$1`, episode.ID).Scan(&jobs); err != nil || jobs != 1 {
+		t.Fatalf("ジョブが二重化した: %d %v", jobs, err)
+	}
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM known_episodes WHERE series_id=$1 AND episode_id=$2`, episode.SeriesID, episode.ID).Scan(&known); err != nil || known != 1 {
+		t.Fatalf("既知記録: %d %v", known, err)
+	}
+	var last time.Time
+	if err := pool.QueryRow(ctx, `SELECT last_checked_at FROM subscriptions WHERE series_id=$1`, episode.SeriesID).Scan(&last); err != nil || !last.Equal(checkedAt) {
+		t.Fatalf("最終確認日時: %v %v", last, err)
+	}
+}
+
+func timePointer(value time.Time) *time.Time { return &value }
+
+func seriesEpisode(id, seriesID string) Episode {
+	ep := sampleEpisode(id)
+	ep.SeriesID = seriesID
+	return ep
+}
+
+func TestRegisterSubscriptionSnapshotAndRollback(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	episodes := []Episode{seriesEpisode("ep1", "series-1"), seriesEpisode("ep2", "series-1")}
+	created, err := s.RegisterSubscription(ctx, "series-1", "番組", episodes, false)
+	if err != nil || !created {
+		t.Fatalf("既存回をダウンロードしない登録: %t %v", created, err)
+	}
+	subs, err := s.ListSubscriptions(ctx)
+	if err != nil || len(subs) != 1 || subs[0].LastCheckedAt == nil || subs[0].LastCheckedAt.Before(subs[0].CreatedAt) {
+		t.Fatalf("登録時の最終確認日時: %+v %v", subs, err)
+	}
+	unknown, err := s.UnknownEpisodeIDs(ctx, "series-1", []string{"ep1", "ep2", "ep3"})
+	if err != nil || len(unknown) != 1 || unknown[0] != "ep3" {
+		t.Fatalf("既知の記録: %v %v", unknown, err)
+	}
+	var jobs int
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM download_jobs WHERE series_id='series-1'`).Scan(&jobs); err != nil || jobs != 0 {
+		t.Fatalf("既存回が投入された: %d %v", jobs, err)
+	}
+	created, err = s.RegisterSubscription(ctx, "series-1", "別の名前", episodes, true)
+	if err != nil || created {
+		t.Fatalf("重複登録: %t %v", created, err)
+	}
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM download_jobs WHERE series_id='series-1'`).Scan(&jobs); err != nil || jobs != 0 {
+		t.Fatalf("重複登録が投入した: %d %v", jobs, err)
+	}
+	bad := seriesEpisode("bad", "series-bad")
+	bad.DurationSeconds = -1
+	created, err = s.RegisterSubscription(ctx, "series-bad", "番組", []Episode{seriesEpisode("good", "series-bad"), bad}, true)
+	if err == nil || created {
+		t.Fatalf("壊れた回の登録が成功: %t %v", created, err)
+	}
+	for _, table := range []string{"subscriptions", "known_episodes", "download_jobs"} {
+		var count int
+		if err := pool.QueryRow(ctx, `SELECT count(*) FROM `+table+` WHERE series_id='series-bad'`).Scan(&count); err != nil || count != 0 {
+			t.Errorf("取引の巻き戻し %s: %d %v", table, count, err)
+		}
+	}
+	deleted, err := s.DeleteSubscription(ctx, "series-1")
+	if err != nil || !deleted {
+		t.Fatalf("解除: %t %v", deleted, err)
+	}
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM known_episodes WHERE series_id='series-1'`).Scan(&jobs); err != nil || jobs != 0 {
+		t.Fatalf("解除後に既知が残った: %d %v", jobs, err)
+	}
+	created, err = s.RegisterSubscription(ctx, "series-1", "番組", episodes, true)
+	if err != nil || !created {
+		t.Fatalf("解除後の再登録: %t %v", created, err)
+	}
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM download_jobs WHERE series_id='series-1'`).Scan(&jobs); err != nil || jobs != 2 {
+		t.Fatalf("再登録で既存回を選び直せない: %d %v", jobs, err)
+	}
+}
+
+func TestRegisterAndQueueUnseenEpisodes(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	manual, _, err := s.Enqueue(ctx, seriesEpisode("manual", "series-2"), "manual")
+	if err != nil {
+		t.Fatal(err)
+	}
+	created, err := s.RegisterSubscription(ctx, "series-2", "番組", []Episode{seriesEpisode("manual", "series-2"), seriesEpisode("past", "series-2")}, true)
+	if err != nil || !created {
+		t.Fatalf("公開中の回を投入: %t %v", created, err)
+	}
+	manualAfter, err := s.GetJob(ctx, manual.ID)
+	if err != nil || manualAfter.Source != "manual" {
+		t.Fatalf("既存の手動ジョブを変更: %+v %v", manualAfter, err)
+	}
+	var subscriptionJobs int
+	if err := pool.QueryRow(ctx, `SELECT count(*) FROM download_jobs WHERE series_id='series-2' AND source='subscription' AND status='queued'`).Scan(&subscriptionJobs); err != nil || subscriptionJobs != 1 {
+		t.Fatalf("登録時に作ったジョブ: %d %v", subscriptionJobs, err)
+	}
+	subs, err := s.ListSubscriptions(ctx)
+	if err != nil || len(subs) != 1 || subs[0].JobCount != 2 || !subs[0].Enabled || subs[0].LastCheckedAt == nil {
+		t.Fatalf("登録一覧と関連ジョブ数: %+v %v", subs, err)
+	}
+	unknown, err := s.UnknownEpisodeIDs(ctx, "series-2", []string{"past", "new", "manual", "new"})
+	if err != nil || len(unknown) != 1 || unknown[0] != "new" {
+		t.Fatalf("未確認の抽出: %v %v", unknown, err)
+	}
+	if err := s.SetSubscriptionEnabled(ctx, "series-2", false); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := s.QueueUnseenEpisodes(ctx, "series-2", []Episode{seriesEpisode("new", "series-2")}); !errors.Is(err, ErrSubscriptionPaused) {
+		t.Fatalf("一時停止中の投入: %v", err)
+	}
+	unknown, err = s.UnknownEpisodeIDs(ctx, "series-2", []string{"new"})
+	if err != nil || len(unknown) != 1 {
+		t.Fatalf("一時停止中に既知となった: %v %v", unknown, err)
+	}
+	if err := s.SetSubscriptionEnabled(ctx, "series-2", true); err != nil {
+		t.Fatal(err)
+	}
+	invalid := seriesEpisode("invalid", "series-2")
+	invalid.DurationSeconds = -1
+	if _, err := s.QueueUnseenEpisodes(ctx, "series-2", []Episode{seriesEpisode("newer", "series-2"), invalid}); err == nil {
+		t.Fatal("新規回の投入が途中失敗でも確定した")
+	}
+	unknown, err = s.UnknownEpisodeIDs(ctx, "series-2", []string{"newer"})
+	if err != nil || len(unknown) != 1 {
+		t.Fatalf("新規回の投入失敗が巻き戻らない: %v %v", unknown, err)
+	}
+	count, err := s.QueueUnseenEpisodes(ctx, "series-2", []Episode{seriesEpisode("past", "series-2"), seriesEpisode("new", "series-2")})
+	if err != nil || count != 1 {
+		t.Fatalf("再開後の新しい回: %d %v", count, err)
+	}
+	count, err = s.QueueUnseenEpisodes(ctx, "series-2", []Episode{seriesEpisode("new", "series-2")})
+	if err != nil || count != 0 {
+		t.Fatalf("重複した新しい回: %d %v", count, err)
+	}
+	var source string
+	if err := pool.QueryRow(ctx, `SELECT source FROM download_jobs WHERE episode_id='new'`).Scan(&source); err != nil || source != "subscription" {
+		t.Fatalf("新しい回の登録元: %q %v", source, err)
+	}
+	statuses, err := s.SubscribedSeries(ctx, []string{"series-2", "missing"})
+	if err != nil || !statuses["series-2"] || statuses["missing"] {
+		t.Fatalf("登録済みシリーズの一括取得: %v %v", statuses, err)
+	}
+}
+
+func TestQueueUnseenEpisodesConcurrent(t *testing.T) {
+	pool := testPool(t, true)
+	s := New(pool)
+	ctx := context.Background()
+	created, err := s.RegisterSubscription(ctx, "series-concurrent", "番組", nil, false)
+	if err != nil || !created {
+		t.Fatalf("登録: %t %v", created, err)
+	}
+	episodes := []Episode{
+		seriesEpisode("concurrent-1", "series-concurrent"),
+		seriesEpisode("concurrent-2", "series-concurrent"),
+	}
+	const workers = 8
+	counts := make(chan int, workers)
+	errs := make(chan error, workers)
+	var wg sync.WaitGroup
+	for range workers {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			count, err := s.QueueUnseenEpisodes(ctx, "series-concurrent", episodes)
+			counts <- count
+			errs <- err
+		}()
+	}
+	wg.Wait()
+	close(counts)
+	close(errs)
+	for err := range errs {
+		if err != nil {
+			t.Errorf("同時投入: %v", err)
+		}
+	}
+	total := 0
+	positive := 0
+	for count := range counts {
+		total += count
+		if count > 0 {
+			positive++
+		}
+	}
+	if total != 2 || positive != 1 {
+		t.Fatalf("同時投入の記録件数: total=%d positive workers=%d", total, positive)
+	}
+	for table := range map[string]struct{}{"known_episodes": {}, "download_jobs": {}} {
+		var count int
+		if err := pool.QueryRow(ctx, `SELECT count(*) FROM `+table+` WHERE series_id='series-concurrent'`).Scan(&count); err != nil || count != 2 {
+			t.Errorf("%s の重複防止: %d %v", table, count, err)
+		}
+	}
+}

internal/tver/client.go

@@ -0,0 +1,171 @@
+package tver
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+const (
+	DefaultBaseURL    = "https://platform-api.tver.jp"
+	PreviewMaxSeconds = 180
+)
+
+type Session struct {
+	PlatformUID   string `json:"platform_uid"`
+	PlatformToken string `json:"platform_token"`
+}
+
+type Episode struct {
+	ID                 string `json:"id"`
+	SeriesID           string `json:"seriesID"`
+	SeriesTitle        string `json:"seriesTitle"`
+	Title              string `json:"title"`
+	BroadcasterName    string `json:"broadcasterName"`
+	Duration           int64  `json:"duration"`
+	EndAt              int64  `json:"endAt"`
+	ThumbnailPath      string `json:"thumbnailPath"`
+	BroadcastDateLabel string `json:"broadcastDateLabel"`
+}
+
+type Client struct {
+	baseURL    *url.URL
+	serviceURL *url.URL
+	httpClient *http.Client
+}
+
+type httpStatusError struct {
+	statusCode int
+}
+
+func (e *httpStatusError) Error() string {
+	return fmt.Sprintf("HTTP %d", e.statusCode)
+}
+
+// NewClient はテスト用に API の接続先と HTTP クライアントを差し替えられる。
+// 接続先が空、またはクライアントが nil の場合は本番用の既定値を使う。
+func NewClient(baseURL string, httpClient *http.Client) (*Client, error) {
+	defaultAPI := baseURL == ""
+	if baseURL == "" {
+		baseURL = DefaultBaseURL
+	}
+	parsed, err := url.Parse(baseURL)
+	if err != nil || (parsed.Scheme != "https" && parsed.Scheme != "http") || parsed.Host == "" || parsed.RawQuery != "" || parsed.Fragment != "" {
+		return nil, fmt.Errorf("invalid TVer API base URL")
+	}
+	if httpClient == nil {
+		httpClient = &http.Client{Timeout: 15 * time.Second}
+	}
+	service := parsed
+	if defaultAPI {
+		service = &url.URL{Scheme: "https", Host: "service-api.tver.jp"}
+	}
+	return &Client{baseURL: parsed, serviceURL: service, httpClient: httpClient}, nil
+}
+
+func (c *Client) CreateSession(ctx context.Context) (Session, error) {
+	endpoint := c.baseURL.ResolveReference(&url.URL{Path: "/v2/api/platform_users/browser/create"})
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint.String(), strings.NewReader("device_type=pc"))
+	if err != nil {
+		return Session{}, fmt.Errorf("create session request: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	var response struct {
+		Code    int     `json:"code"`
+		Message string  `json:"message"`
+		Result  Session `json:"result"`
+	}
+	if err := c.getJSON(req, &response); err != nil {
+		return Session{}, fmt.Errorf("create session: %w", err)
+	}
+	if response.Code != 0 || response.Result.PlatformUID == "" || response.Result.PlatformToken == "" {
+		return Session{}, fmt.Errorf("create session: invalid API result (code %d)", response.Code)
+	}
+	return response.Result, nil
+}
+
+func (c *Client) ListNewer(ctx context.Context, category string, session Session) ([]Episode, error) {
+	if category != "drama" && category != "variety" {
+		return nil, fmt.Errorf("unsupported category %q", category)
+	}
+	if session.PlatformUID == "" || session.PlatformToken == "" {
+		return nil, errors.New("missing TVer session credentials")
+	}
+	endpoint := c.baseURL.ResolveReference(&url.URL{Path: "/service/api/v1/callNewerDetail/" + category})
+	query := endpoint.Query()
+	query.Set("platform_uid", session.PlatformUID)
+	query.Set("platform_token", session.PlatformToken)
+	endpoint.RawQuery = query.Encode()
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), nil)
+	if err != nil {
+		return nil, fmt.Errorf("newer list request: %w", err)
+	}
+	req.Header.Set("x-tver-platform-type", "web")
+	req.Header.Set("Origin", "https://tver.jp")
+	req.Header.Set("Referer", "https://tver.jp/")
+	var response struct {
+		Code   int `json:"code"`
+		Result struct {
+			Contents *struct {
+				Contents []struct {
+					Type    string  `json:"type"`
+					Content Episode `json:"content"`
+				} `json:"contents"`
+			} `json:"contents"`
+		} `json:"result"`
+	}
+	if err := c.getJSON(req, &response); err != nil {
+		return nil, fmt.Errorf("newer list: %w", err)
+	}
+	if response.Code != 0 {
+		return nil, fmt.Errorf("newer list: API code %d", response.Code)
+	}
+	if response.Result.Contents == nil || response.Result.Contents.Contents == nil {
+		return nil, errors.New("newer list: missing contents")
+	}
+	var episodes []Episode
+	for _, item := range response.Result.Contents.Contents {
+		if item.Type != "episode" {
+			continue
+		}
+		if item.Content.ID == "" {
+			return nil, errors.New("newer list: episode without id")
+		}
+		episodes = append(episodes, item.Content)
+	}
+	return episodes, nil
+}
+
+func (c *Client) FetchNewer(ctx context.Context, category string) ([]Episode, error) {
+	session, err := c.CreateSession(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return c.ListNewer(ctx, category, session)
+}
+
+func (c *Client) getJSON(req *http.Request, dst any) error {
+	response, err := c.httpClient.Do(req)
+	if err != nil {
+		// url.Error には platform_token を含むリクエスト URL が入るため、内部のエラーだけを返す。
+		var urlErr *url.Error
+		if errors.As(err, &urlErr) {
+			err = urlErr.Err
+		}
+		return fmt.Errorf("request failed: %w", err)
+	}
+	defer response.Body.Close()
+	if response.StatusCode < 200 || response.StatusCode >= 300 {
+		return &httpStatusError{statusCode: response.StatusCode}
+	}
+	if err := json.NewDecoder(io.LimitReader(response.Body, 8<<20)).Decode(dst); err != nil {
+		return fmt.Errorf("decode JSON: %w", err)
+	}
+	return nil
+}

internal/tver/client_test.go

@@ -0,0 +1,213 @@
+package tver
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"strings"
+	"testing"
+)
+
+type localOnlyTransport struct {
+	host string
+	base http.RoundTripper
+}
+
+func (tr localOnlyTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	if req.URL.Scheme != "http" || req.URL.Host != tr.host {
+		return nil, fmt.Errorf("test attempted external request to %s", req.URL.Host)
+	}
+	return tr.base.RoundTrip(req)
+}
+
+func testClient(t *testing.T, handler http.HandlerFunc) *Client {
+	t.Helper()
+	server := httptest.NewServer(handler)
+	t.Cleanup(server.Close)
+	serverURL, err := url.Parse(server.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	httpClient := server.Client()
+	baseTransport := httpClient.Transport
+	if baseTransport == nil {
+		baseTransport = http.DefaultTransport
+	}
+	httpClient.Transport = localOnlyTransport{host: serverURL.Host, base: baseTransport}
+	client, err := NewClient(server.URL, httpClient)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return client
+}
+
+func TestTestClientRejectsExternalRequests(t *testing.T) {
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		t.Errorf("unexpected local request to %s", r.URL)
+	})
+	_, err := client.httpClient.Get(DefaultBaseURL)
+	if err == nil || !strings.Contains(err.Error(), "test attempted external request") {
+		t.Errorf("external request error = %v", err)
+	}
+}
+
+func TestFetchNewerFromRecordedResponse(t *testing.T) {
+	fixture, err := os.ReadFile("testdata/newer_drama.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var sessionCalls, newerCalls int
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/v2/api/platform_users/browser/create":
+			sessionCalls++
+			if r.Method != http.MethodPost || r.Header.Get("Content-Type") != "application/x-www-form-urlencoded" {
+				t.Errorf("session request method/Content-Type: %s %s", r.Method, r.Header.Get("Content-Type"))
+			}
+			if err := r.ParseForm(); err != nil || r.PostForm.Get("device_type") != "pc" {
+				t.Errorf("session form: %v, %v", r.PostForm, err)
+			}
+			_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"uid-test","platform_token":"token-test"}}`))
+		case "/service/api/v1/callNewerDetail/drama":
+			newerCalls++
+			if r.Method != http.MethodGet || r.URL.Query().Get("platform_uid") != "uid-test" || r.URL.Query().Get("platform_token") != "token-test" {
+				t.Errorf("newer request method/query: %s %v", r.Method, r.URL.Query())
+			}
+			for name, want := range map[string]string{"x-tver-platform-type": "web", "Origin": "https://tver.jp", "Referer": "https://tver.jp/"} {
+				if got := r.Header.Get(name); got != want {
+					t.Errorf("header %s = %q; want %q", name, got, want)
+				}
+			}
+			_, _ = w.Write(fixture)
+		default:
+			t.Errorf("unexpected path %s", r.URL.Path)
+			http.NotFound(w, r)
+		}
+	})
+	episodes, err := client.FetchNewer(context.Background(), "drama")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sessionCalls != 1 || newerCalls != 1 {
+		t.Fatalf("calls: session=%d newer=%d", sessionCalls, newerCalls)
+	}
+	if len(episodes) != 3 {
+		t.Fatalf("episodes = %d; want 3", len(episodes))
+	}
+	want := Episode{
+		ID:                 "eps0z5761a",
+		SeriesID:           "sr0lhdrtdb",
+		SeriesTitle:        "韓国ドラマ「良いが悪い、ドンジェ」",
+		Title:              "#10（最終話）",
+		BroadcasterName:    "BS12トゥエルビ",
+		Duration:           2712,
+		EndAt:              1792209540,
+		ThumbnailPath:      "/images/content/thumbnail/episode/xlarge/eps0z5761a.jpg?v=b45ddb51",
+		BroadcastDateLabel: "10月3日(土)放送分",
+	}
+	if episodes[0] != want {
+		t.Errorf("first episode = %+v; want %+v", episodes[0], want)
+	}
+	if episodes[2].Duration != 60 || episodes[2].BroadcastDateLabel != "" {
+		t.Errorf("third episode = %+v", episodes[2])
+	}
+}
+
+func TestListNewerVarietySkipsOtherTypes(t *testing.T) {
+	var calls int
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		calls++
+		if r.URL.Path != "/service/api/v1/callNewerDetail/variety" {
+			t.Errorf("path = %s", r.URL.Path)
+		}
+		if r.Method != http.MethodGet || r.URL.Query().Get("platform_uid") != "u" || r.URL.Query().Get("platform_token") != "t" {
+			t.Errorf("variety request method/query: %s %v", r.Method, r.URL.Query())
+		}
+		for name, want := range map[string]string{"x-tver-platform-type": "web", "Origin": "https://tver.jp", "Referer": "https://tver.jp/"} {
+			if got := r.Header.Get(name); got != want {
+				t.Errorf("variety header %s = %q; want %q", name, got, want)
+			}
+		}
+		_, _ = w.Write([]byte(`{"code":0,"result":{"contents":{"contents":[{"type":"series","content":{"id":"series-1"}},{"type":"episode","content":{"id":"episode-1","duration":42}}]}}}`))
+	})
+	episodes, err := client.ListNewer(context.Background(), "variety", Session{PlatformUID: "u", PlatformToken: "t"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(episodes) != 1 || episodes[0].ID != "episode-1" || episodes[0].Duration != 42 {
+		t.Errorf("episodes = %+v", episodes)
+	}
+	if calls != 1 {
+		t.Errorf("variety calls = %d; want 1", calls)
+	}
+}
+
+func TestFetchNewerErrors(t *testing.T) {
+	tests := []struct {
+		name          string
+		sessionStatus int
+		sessionBody   string
+		newerStatus   int
+		newerBody     string
+		want          string
+	}{
+		{"session HTTP error", 503, "", 200, "", "create session: HTTP 503"},
+		{"session invalid JSON", 200, "{", 200, "", "create session: decode JSON"},
+		{"session API error", 200, `{"code":7,"result":{"platform_uid":"u","platform_token":"t"}}`, 200, "", "create session: invalid API result"},
+		{"session missing credentials", 200, `{"code":0,"result":{}}`, 200, "", "create session: invalid API result"},
+		{"session missing token", 200, `{"code":0,"result":{"platform_uid":"u"}}`, 200, "", "create session: invalid API result"},
+		{"session missing uid", 200, `{"code":0,"result":{"platform_token":"t"}}`, 200, "", "create session: invalid API result"},
+		{"newer HTTP error", 200, `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`, 502, "", "newer list: HTTP 502"},
+		{"newer invalid JSON", 200, `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`, 200, "{", "newer list: decode JSON"},
+		{"newer API error", 200, `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`, 200, `{"code":7}`, "newer list: API code 7"},
+		{"newer missing contents", 200, `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`, 200, `{"code":0,"result":{}}`, "newer list: missing contents"},
+		{"newer missing items", 200, `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`, 200, `{"code":0,"result":{"contents":{}}}`, "newer list: missing contents"},
+		{"episode missing id", 200, `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`, 200, `{"code":0,"result":{"contents":{"contents":[{"type":"episode","content":{"title":"untitled"}}]}}}`, "newer list: episode without id"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var sessionCalls, newerCalls int
+			client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+				switch r.URL.Path {
+				case "/v2/api/platform_users/browser/create":
+					sessionCalls++
+					w.WriteHeader(tt.sessionStatus)
+					_, _ = w.Write([]byte(tt.sessionBody))
+				case "/service/api/v1/callNewerDetail/drama":
+					newerCalls++
+					w.WriteHeader(tt.newerStatus)
+					_, _ = w.Write([]byte(tt.newerBody))
+				default:
+					t.Errorf("unexpected path %s", r.URL.Path)
+					http.NotFound(w, r)
+				}
+			})
+			_, err := client.FetchNewer(context.Background(), "drama")
+			if err == nil || !strings.Contains(err.Error(), tt.want) {
+				t.Errorf("error = %v; want %q", err, tt.want)
+			}
+			wantNewerCalls := 1
+			if strings.HasPrefix(tt.name, "session ") {
+				wantNewerCalls = 0
+			}
+			if sessionCalls != 1 || newerCalls != wantNewerCalls {
+				t.Errorf("calls: session=%d newer=%d; want session=1 newer=%d", sessionCalls, newerCalls, wantNewerCalls)
+			}
+		})
+	}
+}
+
+func TestListNewerRejectsInvalidInput(t *testing.T) {
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		t.Errorf("unexpected request to %s", r.URL)
+	})
+	if _, err := client.ListNewer(context.Background(), "news", Session{PlatformUID: "u", PlatformToken: "t"}); err == nil {
+		t.Error("unsupported category accepted")
+	}
+	if _, err := client.ListNewer(context.Background(), "drama", Session{}); err == nil {
+		t.Error("empty session accepted")
+	}
+}

internal/tver/series.go

@@ -0,0 +1,143 @@
+package tver
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"regexp"
+)
+
+var tverSeriesIDPattern = regexp.MustCompile(`^[A-Za-z0-9]+$`)
+
+// ErrSeriesNotFound は callSeries が HTTP 404 を返したことを表す。
+var ErrSeriesNotFound = errors.New("series not found")
+
+type seriesContents struct {
+	Code   int `json:"code"`
+	Result struct {
+		Contents []struct {
+			Type    string  `json:"type"`
+			Content Episode `json:"content"`
+		} `json:"contents"`
+	} `json:"result"`
+}
+
+func (c *Client) FetchSeries(ctx context.Context, seriesID string) (string, error) {
+	if !tverSeriesIDPattern.MatchString(seriesID) {
+		return "", errors.New("invalid series id")
+	}
+	session, err := c.CreateSession(ctx)
+	if err != nil {
+		return "", err
+	}
+	endpoint := c.baseURL.ResolveReference(&url.URL{Path: "/service/api/v2/callSeries/" + seriesID})
+	query := endpoint.Query()
+	query.Set("platform_uid", session.PlatformUID)
+	query.Set("platform_token", session.PlatformToken)
+	endpoint.RawQuery = query.Encode()
+	request, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), nil)
+	if err != nil {
+		return "", fmt.Errorf("series request: %w", err)
+	}
+	setTVerHeaders(request)
+	var response struct {
+		Code   int `json:"code"`
+		Result struct {
+			Content struct {
+				Content struct {
+					Title string `json:"title"`
+				} `json:"content"`
+			} `json:"content"`
+		} `json:"result"`
+	}
+	if err := c.getJSON(request, &response); err != nil {
+		var statusErr *httpStatusError
+		if errors.As(err, &statusErr) && statusErr.statusCode == http.StatusNotFound {
+			return "", ErrSeriesNotFound
+		}
+		return "", fmt.Errorf("series: %w", err)
+	}
+	if response.Code != 0 || response.Result.Content.Content.Title == "" {
+		return "", fmt.Errorf("series: invalid API result (code %d)", response.Code)
+	}
+	return response.Result.Content.Content.Title, nil
+}
+
+func (c *Client) FetchSeriesEpisodes(ctx context.Context, seriesID string) ([]Episode, error) {
+	if !tverSeriesIDPattern.MatchString(seriesID) {
+		return nil, errors.New("invalid series id")
+	}
+	seasonsURL := c.serviceURL.ResolveReference(&url.URL{Path: "/api/v1/callSeriesSeasons/" + seriesID})
+	request, err := http.NewRequestWithContext(ctx, http.MethodGet, seasonsURL.String(), nil)
+	if err != nil {
+		return nil, fmt.Errorf("series seasons request: %w", err)
+	}
+	setTVerHeaders(request)
+	var seasons seriesContents
+	if err := c.getJSON(request, &seasons); err != nil {
+		return nil, fmt.Errorf("series seasons: %w", err)
+	}
+	if seasons.Code != 0 || seasons.Result.Contents == nil {
+		return nil, fmt.Errorf("series seasons: invalid API result (code %d)", seasons.Code)
+	}
+	var seasonIDs []string
+	for _, item := range seasons.Result.Contents {
+		if item.Type != "season" {
+			continue
+		}
+		if !tverSeriesIDPattern.MatchString(item.Content.ID) {
+			return nil, errors.New("series seasons: invalid season id")
+		}
+		seasonIDs = append(seasonIDs, item.Content.ID)
+	}
+	if len(seasonIDs) == 0 {
+		return []Episode{}, nil
+	}
+	session, err := c.CreateSession(ctx)
+	if err != nil {
+		return nil, err
+	}
+	seen := make(map[string]bool)
+	var episodes []Episode
+	for _, seasonID := range seasonIDs {
+		endpoint := c.baseURL.ResolveReference(&url.URL{Path: "/service/api/v1/callSeasonEpisodes/" + seasonID})
+		query := endpoint.Query()
+		query.Set("platform_uid", session.PlatformUID)
+		query.Set("platform_token", session.PlatformToken)
+		endpoint.RawQuery = query.Encode()
+		request, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), nil)
+		if err != nil {
+			return nil, fmt.Errorf("season episodes request: %w", err)
+		}
+		setTVerHeaders(request)
+		var response seriesContents
+		if err := c.getJSON(request, &response); err != nil {
+			return nil, fmt.Errorf("season episodes: %w", err)
+		}
+		if response.Code != 0 || response.Result.Contents == nil {
+			return nil, fmt.Errorf("season episodes: invalid API result (code %d)", response.Code)
+		}
+		for _, item := range response.Result.Contents {
+			if item.Type != "episode" {
+				continue
+			}
+			ep := item.Content
+			if !tverSeriesIDPattern.MatchString(ep.ID) || ep.SeriesID != seriesID {
+				return nil, errors.New("season episodes: invalid episode identity")
+			}
+			if !seen[ep.ID] {
+				episodes = append(episodes, ep)
+				seen[ep.ID] = true
+			}
+		}
+	}
+	return episodes, nil
+}
+
+func setTVerHeaders(request *http.Request) {
+	request.Header.Set("x-tver-platform-type", "web")
+	request.Header.Set("Origin", "https://tver.jp")
+	request.Header.Set("Referer", "https://tver.jp/")
+}

internal/tver/series_test.go

@@ -0,0 +1,305 @@
+package tver
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestFetchSeriesEpisodesFromRecordedResponses(t *testing.T) {
+	seasons, err := os.ReadFile("testdata/series_seasons.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	episodes, err := os.ReadFile("testdata/season_episodes.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var seasonCalls, sessionCalls, episodeCalls int
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/callSeriesSeasons/sr0lhdrtdb":
+			seasonCalls++
+			if r.Method != http.MethodGet || r.Header.Get("x-tver-platform-type") != "web" || r.Header.Get("Origin") != "https://tver.jp" || r.Header.Get("Referer") != "https://tver.jp/" {
+				t.Errorf("seasons request: method=%s headers=%v", r.Method, r.Header)
+			}
+			_, _ = w.Write(seasons)
+		case "/v2/api/platform_users/browser/create":
+			sessionCalls++
+			_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"uid-test","platform_token":"token-test"}}`))
+		case "/service/api/v1/callSeasonEpisodes/ss3i6njoq3":
+			episodeCalls++
+			if r.Method != http.MethodGet || r.URL.Query().Get("platform_uid") != "uid-test" || r.URL.Query().Get("platform_token") != "token-test" || r.Header.Get("x-tver-platform-type") != "web" || r.Header.Get("Origin") != "https://tver.jp" || r.Header.Get("Referer") != "https://tver.jp/" {
+				t.Errorf("season episode request: method=%s query=%v headers=%v", r.Method, r.URL.Query(), r.Header)
+			}
+			_, _ = w.Write(episodes)
+		default:
+			t.Errorf("unexpected path: %s", r.URL.Path)
+			http.NotFound(w, r)
+		}
+	})
+	got, err := client.FetchSeriesEpisodes(context.Background(), "sr0lhdrtdb")
+	if err != nil || len(got) != 1 {
+		t.Fatalf("series episodes: %+v %v", got, err)
+	}
+	ep := got[0]
+	if ep.ID != "eps0z5761a" || ep.SeriesID != "sr0lhdrtdb" || ep.Title != "#10（最終話）" || ep.SeriesTitle != "韓国ドラマ「良いが悪い、ドンジェ」" || ep.BroadcasterName != "BS12トゥエルビ" || ep.Duration != 2712 || ep.EndAt != 1792209540 || !strings.Contains(ep.ThumbnailPath, "eps0z5761a.jpg") {
+		t.Errorf("episode fields: %+v", ep)
+	}
+	if seasonCalls != 1 || sessionCalls != 1 || episodeCalls != 1 {
+		t.Errorf("calls: seasons=%d session=%d episodes=%d", seasonCalls, sessionCalls, episodeCalls)
+	}
+}
+
+func TestFetchSeriesEpisodesTransportAndDecodeErrors(t *testing.T) {
+	validSeasons := `{"code":0,"result":{"contents":[{"type":"season","content":{"id":"ss1"}}]}}`
+	validSession := `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`
+	validEpisodes := `{"code":0,"result":{"contents":[]}}`
+	for _, tt := range []struct {
+		name                                       string
+		seasonStatus, sessionStatus, episodeStatus int
+		seasonBody, sessionBody, episodeBody       string
+		want                                       string
+		wantSession, wantEpisode                   int
+	}{
+		{"seasons HTTP", 503, 200, 200, "", validSession, validEpisodes, "series seasons: HTTP 503", 0, 0},
+		{"seasons JSON", 200, 200, 200, "{", validSession, validEpisodes, "series seasons: decode JSON", 0, 0},
+		{"session HTTP", 200, 503, 200, validSeasons, "", validEpisodes, "create session: HTTP 503", 1, 0},
+		{"episodes HTTP", 200, 200, 502, validSeasons, validSession, "", "season episodes: HTTP 502", 1, 1},
+		{"episodes JSON", 200, 200, 200, validSeasons, validSession, "{", "season episodes: decode JSON", 1, 1},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			var seasonCalls, sessionCalls, episodeCalls int
+			client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+				switch r.URL.Path {
+				case "/api/v1/callSeriesSeasons/sr1":
+					seasonCalls++
+					w.WriteHeader(tt.seasonStatus)
+					_, _ = w.Write([]byte(tt.seasonBody))
+				case "/v2/api/platform_users/browser/create":
+					sessionCalls++
+					w.WriteHeader(tt.sessionStatus)
+					_, _ = w.Write([]byte(tt.sessionBody))
+				case "/service/api/v1/callSeasonEpisodes/ss1":
+					episodeCalls++
+					w.WriteHeader(tt.episodeStatus)
+					_, _ = w.Write([]byte(tt.episodeBody))
+				default:
+					t.Errorf("unexpected request: %s", r.URL.Path)
+				}
+			})
+			_, err := client.FetchSeriesEpisodes(context.Background(), "sr1")
+			if err == nil || !strings.Contains(err.Error(), tt.want) {
+				t.Fatalf("error=%v; want %q", err, tt.want)
+			}
+			if seasonCalls != 1 || sessionCalls != tt.wantSession || episodeCalls != tt.wantEpisode {
+				t.Errorf("calls: seasons=%d session=%d episodes=%d", seasonCalls, sessionCalls, episodeCalls)
+			}
+		})
+	}
+}
+
+func TestFetchSeriesEpisodesRejectsBadResponses(t *testing.T) {
+	for _, tt := range []struct {
+		name, seasons, episodes string
+	}{
+		{"season API code", `{"code":1,"result":{"contents":[]}}`, ""},
+		{"missing seasons", `{"code":0,"result":{}}`, ""},
+		{"season without id", `{"code":0,"result":{"contents":[{"type":"season","content":{}}]}}`, ""},
+		{"episode API code", `{"code":0,"result":{"contents":[{"type":"season","content":{"id":"ss1"}}]}}`, `{"code":1,"result":{"contents":[]}}`},
+		{"wrong series", `{"code":0,"result":{"contents":[{"type":"season","content":{"id":"ss1"}}]}}`, `{"code":0,"result":{"contents":[{"type":"episode","content":{"id":"ep1","seriesID":"other"}}]}}`},
+		{"episode without id", `{"code":0,"result":{"contents":[{"type":"season","content":{"id":"ss1"}}]}}`, `{"code":0,"result":{"contents":[{"type":"episode","content":{"seriesID":"sr1"}}]}}`},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+				switch {
+				case strings.Contains(r.URL.Path, "callSeriesSeasons"):
+					_, _ = w.Write([]byte(tt.seasons))
+				case strings.Contains(r.URL.Path, "browser/create"):
+					_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`))
+				default:
+					_, _ = w.Write([]byte(tt.episodes))
+				}
+			})
+			if _, err := client.FetchSeriesEpisodes(context.Background(), "sr1"); err == nil {
+				t.Fatal("invalid response accepted")
+			}
+		})
+	}
+}
+
+func TestFetchSeriesEpisodesMultipleSeasonsDeduplicates(t *testing.T) {
+	var sessionCalls, episodeCalls int
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/api/v1/callSeriesSeasons/sr1":
+			_, _ = w.Write([]byte(`{"code":0,"result":{"contents":[{"type":"season","content":{"id":"ss1"}},{"type":"season","content":{"id":"ss2"}}]}}`))
+		case "/v2/api/platform_users/browser/create":
+			sessionCalls++
+			_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`))
+		case "/service/api/v1/callSeasonEpisodes/ss1":
+			episodeCalls++
+			_, _ = w.Write([]byte(`{"code":0,"result":{"contents":[{"type":"episode","content":{"id":"ep1","seriesID":"sr1"}}]}}`))
+		case "/service/api/v1/callSeasonEpisodes/ss2":
+			episodeCalls++
+			_, _ = w.Write([]byte(`{"code":0,"result":{"contents":[{"type":"episode","content":{"id":"ep1","seriesID":"sr1"}},{"type":"episode","content":{"id":"ep2","seriesID":"sr1"}}]}}`))
+		default:
+			t.Errorf("unexpected request: %s", r.URL.Path)
+		}
+	})
+	episodes, err := client.FetchSeriesEpisodes(context.Background(), "sr1")
+	if err != nil || len(episodes) != 2 || episodes[0].ID != "ep1" || episodes[1].ID != "ep2" || sessionCalls != 1 || episodeCalls != 2 {
+		t.Fatalf("複数 season: %+v %v session=%d episode=%d", episodes, err, sessionCalls, episodeCalls)
+	}
+}
+
+func TestFetchSeriesEpisodesNoSeasonsSkipsSession(t *testing.T) {
+	var calls int
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		calls++
+		if r.URL.Path != "/api/v1/callSeriesSeasons/sr1" {
+			t.Errorf("unexpected request: %s", r.URL.Path)
+		}
+		_, _ = w.Write([]byte(`{"code":0,"result":{"contents":[]}}`))
+	})
+	episodes, err := client.FetchSeriesEpisodes(context.Background(), "sr1")
+	if err != nil || len(episodes) != 0 || calls != 1 {
+		t.Fatalf("season 無し: %+v %v calls=%d", episodes, err, calls)
+	}
+}
+
+func TestFetchSeriesEpisodesRejectsInvalidSeriesIDBeforeRequest(t *testing.T) {
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		t.Errorf("unexpected request: %s", r.URL.Path)
+	})
+	for _, id := range []string{"", "../other", "sr1?x=1"} {
+		if _, err := client.FetchSeriesEpisodes(context.Background(), id); err == nil {
+			t.Errorf("invalid series id accepted: %q", id)
+		}
+	}
+}
+
+func TestFetchSeriesFromRecordedResponse(t *testing.T) {
+	fixture, err := os.ReadFile("testdata/series.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var sessionCalls, seriesCalls int
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/v2/api/platform_users/browser/create":
+			sessionCalls++
+			_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"uid-test","platform_token":"token-test"}}`))
+		case "/service/api/v2/callSeries/sr0lhdrtdb":
+			seriesCalls++
+			if r.Method != http.MethodGet || r.URL.Query().Get("platform_uid") != "uid-test" || r.URL.Query().Get("platform_token") != "token-test" {
+				t.Errorf("series request method/query: %s %v", r.Method, r.URL.Query())
+			}
+			for name, want := range map[string]string{"x-tver-platform-type": "web", "Origin": "https://tver.jp", "Referer": "https://tver.jp/"} {
+				if got := r.Header.Get(name); got != want {
+					t.Errorf("series header %s = %q; want %q", name, got, want)
+				}
+			}
+			_, _ = w.Write(fixture)
+		default:
+			t.Errorf("unexpected request: %s", r.URL.Path)
+			http.NotFound(w, r)
+		}
+	})
+	title, err := client.FetchSeries(context.Background(), "sr0lhdrtdb")
+	if err != nil || title != "韓国ドラマ「良いが悪い、ドンジェ」" {
+		t.Fatalf("series: title=%q error=%v", title, err)
+	}
+	if sessionCalls != 1 || seriesCalls != 1 {
+		t.Fatalf("calls: session=%d series=%d", sessionCalls, seriesCalls)
+	}
+}
+
+func TestFetchSeriesNotFound(t *testing.T) {
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/v2/api/platform_users/browser/create" {
+			_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`))
+			return
+		}
+		http.NotFound(w, r)
+	})
+	_, err := client.FetchSeries(context.Background(), "missing")
+	if !errors.Is(err, ErrSeriesNotFound) {
+		t.Fatalf("error=%v; want ErrSeriesNotFound", err)
+	}
+}
+
+func TestFetchSeriesTransportAndDecodeErrors(t *testing.T) {
+	validSession := `{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`
+	for _, tt := range []struct {
+		name                        string
+		sessionStatus, seriesStatus int
+		sessionBody, seriesBody     string
+		want                        string
+		wantSeriesCalls             int
+	}{
+		{"session HTTP is not series not found", http.StatusNotFound, http.StatusOK, "", "", "create session: HTTP 404", 0},
+		{"series HTTP", http.StatusOK, http.StatusBadGateway, validSession, "", "series: HTTP 502", 1},
+		{"series JSON", http.StatusOK, http.StatusOK, validSession, "{", "series: decode JSON", 1},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			var seriesCalls int
+			client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+				switch r.URL.Path {
+				case "/v2/api/platform_users/browser/create":
+					w.WriteHeader(tt.sessionStatus)
+					_, _ = w.Write([]byte(tt.sessionBody))
+				case "/service/api/v2/callSeries/sr1":
+					seriesCalls++
+					w.WriteHeader(tt.seriesStatus)
+					_, _ = w.Write([]byte(tt.seriesBody))
+				default:
+					t.Errorf("unexpected request: %s", r.URL.Path)
+				}
+			})
+			_, err := client.FetchSeries(context.Background(), "sr1")
+			if err == nil || !strings.Contains(err.Error(), tt.want) || errors.Is(err, ErrSeriesNotFound) {
+				t.Fatalf("error=%v; want %q and not ErrSeriesNotFound", err, tt.want)
+			}
+			if seriesCalls != tt.wantSeriesCalls {
+				t.Fatalf("series calls=%d; want %d", seriesCalls, tt.wantSeriesCalls)
+			}
+		})
+	}
+}
+
+func TestFetchSeriesRejectsBadResponses(t *testing.T) {
+	for _, tt := range []struct {
+		name, body string
+	}{
+		{"empty title", `{"code":0,"result":{"content":{"content":{"title":""}}}}`},
+		{"API code", `{"code":7,"result":{"content":{"content":{"title":"番組"}}}}`},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+				if r.URL.Path == "/v2/api/platform_users/browser/create" {
+					_, _ = w.Write([]byte(`{"code":0,"result":{"platform_uid":"u","platform_token":"t"}}`))
+					return
+				}
+				_, _ = w.Write([]byte(tt.body))
+			})
+			if _, err := client.FetchSeries(context.Background(), "sr1"); err == nil {
+				t.Fatal("invalid response accepted")
+			}
+		})
+	}
+}
+
+func TestFetchSeriesRejectsInvalidSeriesIDBeforeRequest(t *testing.T) {
+	client := testClient(t, func(w http.ResponseWriter, r *http.Request) {
+		t.Errorf("unexpected request: %s", r.URL.Path)
+	})
+	for _, id := range []string{"", "../other", "sr1?x=1", "sr_1"} {
+		if _, err := client.FetchSeries(context.Background(), id); err == nil {
+			t.Errorf("invalid series id accepted: %q", id)
+		}
+	}
+}

internal/tver/testdata/newer_drama.json

@@ -0,0 +1,91 @@
+{
+  "api_version": "",
+  "code": 0,
+  "message": "",
+  "type": "hasharray",
+  "result": {
+    "contents": {
+      "type": "newer",
+      "content": {
+        "id": "drama",
+        "version": 1,
+        "title": "ドラマ"
+      },
+      "thumbnailType": "horizontal",
+      "contents": [
+        {
+          "type": "episode",
+          "content": {
+            "id": "eps0z5761a",
+            "version": 4,
+            "title": "#10（最終話）",
+            "seriesID": "sr0lhdrtdb",
+            "duration": 2712,
+            "endAt": 1792209540,
+            "broadcastDateLabel": "10月3日(土)放送分",
+            "isNHKContent": false,
+            "isSubtitle": false,
+            "ribbonID": 0,
+            "seriesTitle": "韓国ドラマ「良いが悪い、ドンジェ」",
+            "isAvailable": true,
+            "broadcasterName": "BS12トゥエルビ",
+            "productionProviderName": "BS12 トゥエルビ",
+            "isEndingSoon": false,
+            "thumbnailPath": "/images/content/thumbnail/episode/xlarge/eps0z5761a.jpg?v=b45ddb51",
+            "isChannelDefaultSeries": false
+          },
+          "startAt": 1791007200,
+          "endAt": 1792209540
+        },
+        {
+          "type": "episode",
+          "content": {
+            "id": "epo4tfi10u",
+            "version": 4,
+            "title": "#9",
+            "seriesID": "sr0lhdrtdb",
+            "duration": 2712,
+            "endAt": 1792209540,
+            "broadcastDateLabel": "10月3日(土)放送分",
+            "isNHKContent": false,
+            "isSubtitle": false,
+            "ribbonID": 0,
+            "seriesTitle": "韓国ドラマ「良いが悪い、ドンジェ」",
+            "isAvailable": true,
+            "broadcasterName": "BS12トゥエルビ",
+            "productionProviderName": "BS12 トゥエルビ",
+            "isEndingSoon": false,
+            "thumbnailPath": "/images/content/thumbnail/episode/xlarge/epo4tfi10u.jpg?v=2d8ff444",
+            "isChannelDefaultSeries": false
+          },
+          "startAt": 1791007200,
+          "endAt": 1792209540
+        },
+        {
+          "type": "episode",
+          "content": {
+            "id": "ep8cxuessg",
+            "version": 6,
+            "title": "【予告】10月12日(月)24時24分 ~ 放送予定 60秒PR！",
+            "seriesID": "srne6nwihe",
+            "duration": 60,
+            "endAt": 1800282240,
+            "broadcastDateLabel": "",
+            "isNHKContent": false,
+            "isSubtitle": false,
+            "ribbonID": 1,
+            "seriesTitle": "十六夜膳房 -いざよいぜんぼう-",
+            "isAvailable": true,
+            "broadcasterName": "日テレ",
+            "productionProviderName": "日テレ",
+            "isEndingSoon": false,
+            "thumbnailPath": "/images/content/thumbnail/episode/xlarge/ep8cxuessg.jpg?v=58408db2",
+            "isChannelDefaultSeries": false
+          },
+          "startAt": 1791007200,
+          "endAt": 1800282240
+        }
+      ]
+    }
+  }
+}

internal/tver/testdata/season_episodes.json

@@ -0,0 +1 @@
+{"code":0,"result":{"contents":[{"type":"episode","content":{"id":"eps0z5761a","version":4,"title":"#10（最終話）","seriesID":"sr0lhdrtdb","duration":2712,"endAt":1792209540,"broadcastDateLabel":"10月3日(土)放送分","isNHKContent":false,"isSubtitle":false,"ribbonID":0,"seriesTitle":"韓国ドラマ「良いが悪い、ドンジェ」","isAvailable":true,"broadcasterName":"BS12トゥエルビ","productionProviderName":"BS12 トゥエルビ","isEndingSoon":false,"thumbnailPath":"/images/content/thumbnail/episode/xlarge/eps0z5761a.jpg?v=b45ddb51","isChannelDefaultSeries":false}}]}}

internal/tver/testdata/series.json

@@ -0,0 +1 @@
+{"code":0,"result":{"content":{"type":"series","content":{"id":"sr0lhdrtdb","title":"韓国ドラマ「良いが悪い、ドンジェ」"}}}}

internal/tver/testdata/series_seasons.json

@@ -0,0 +1 @@
+{"code":0,"result":{"contents":[{"type":"season","content":{"id":"ss3i6njoq3","version":1,"title":"本編","season_extended":null}}]}}

internal/web/actions.go

@@ -0,0 +1,90 @@
+package web
+
+import (
+	"errors"
+	"net/http"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+type episodeActionView struct {
+	ID, Genre, Status, StatusText string
+}
+
+func statusText(status string) string {
+	switch status {
+	case "queued":
+		return "待機中"
+	case "running":
+		return "ダウンロード中"
+	case "succeeded":
+		return "完了"
+	case "failed":
+		return "失敗"
+	case "canceled":
+		return "取り消し"
+	default:
+		return ""
+	}
+}
+
+func (s *server) enqueue(w http.ResponseWriter, r *http.Request) {
+	genre, id, ok := episodeForm(w, r)
+	if !ok {
+		return
+	}
+	ep, found := s.cachedEpisode(genre, id)
+	if !found {
+		http.Error(w, "新着キャッシュにエピソードがありません。新着を再表示してください", http.StatusNotFound)
+		return
+	}
+	job, _, err := s.jobs.Enqueue(r.Context(), storeEpisode(ep), "manual")
+	if err != nil {
+		s.logger.Printf("待ち行列への登録に失敗: %v", err)
+		http.Error(w, "待ち行列に登録できませんでした", http.StatusInternalServerError)
+		return
+	}
+	s.episodeActionResponse(w, r, episodeActionView{ID: id, Genre: genre, Status: job.Status, StatusText: statusText(job.Status)})
+}
+
+func (s *server) retryEpisode(w http.ResponseWriter, r *http.Request) {
+	genre, id, ok := episodeForm(w, r)
+	if !ok {
+		return
+	}
+	if _, found := s.cachedEpisode(genre, id); !found {
+		http.Error(w, "新着キャッシュにエピソードがありません。新着を再表示してください", http.StatusNotFound)
+		return
+	}
+	if err := s.jobs.RetryEpisode(r.Context(), id); err != nil {
+		if errors.Is(err, store.ErrInvalidTransition) {
+			http.Error(w, "再試行できる状態ではありません", http.StatusConflict)
+		} else {
+			s.logger.Printf("ジョブの再試行に失敗: %v", err)
+			http.Error(w, "再試行できませんでした", http.StatusInternalServerError)
+		}
+		return
+	}
+	s.episodeActionResponse(w, r, episodeActionView{ID: id, Genre: genre, Status: "queued", StatusText: statusText("queued")})
+}
+
+func episodeForm(w http.ResponseWriter, r *http.Request) (string, string, bool) {
+	if err := r.ParseForm(); err != nil {
+		http.Error(w, "フォームを読み取れませんでした", http.StatusBadRequest)
+		return "", "", false
+	}
+	genre, id := r.Form.Get("genre"), r.Form.Get("episode_id")
+	if (genre != "drama" && genre != "variety") || id == "" {
+		http.Error(w, "ジャンルまたはエピソード ID が不正です", http.StatusBadRequest)
+		return "", "", false
+	}
+	return genre, id, true
+}
+
+func (s *server) episodeActionResponse(w http.ResponseWriter, r *http.Request, view episodeActionView) {
+	if r.Header.Get("HX-Request") != "true" {
+		http.Redirect(w, r, "/?genre="+view.Genre, http.StatusSeeOther)
+		return
+	}
+	s.render(w, "episode_action", view)
+}

internal/web/handler.go

@@ -0,0 +1,110 @@
+package web
+
+import (
+	"context"
+	"embed"
+	"html/template"
+	"io/fs"
+	"log"
+	"net/http"
+	"sync"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+//go:embed templates/*.html static/*
+var assets embed.FS
+
+type page struct {
+	Title         string
+	Newer         *newerView
+	Queue         *queueView
+	Subscriptions *subscriptionsView
+	Library       *libraryView
+	Series        *seriesView
+	Video         *videoView
+	DeleteConfirm *deleteConfirmView
+	DeleteResult  *deleteResultView
+}
+
+type JobStore interface {
+	Enqueue(context.Context, store.Episode, string) (store.Job, bool, error)
+	EpisodeStatuses(context.Context, []string) (map[string]string, error)
+	ListJobs(context.Context, string, int) ([]store.Job, error)
+	GetJob(context.Context, int64) (store.Job, error)
+	Retry(context.Context, int64) error
+	RetryEpisode(context.Context, string) error
+	Cancel(context.Context, int64) error
+	SubscribedSeries(context.Context, []string) (map[string]bool, error)
+	RegisterSubscription(context.Context, string, string, []store.Episode, bool) (bool, error)
+	ListSubscriptions(context.Context) ([]store.Subscription, error)
+	SetSubscriptionEnabled(context.Context, string, bool) error
+	DeleteSubscription(context.Context, string) (bool, error)
+	ListSucceededJobs(context.Context, int) ([]store.Job, error)
+	ListLibrarySeries(context.Context) ([]store.LibrarySeries, error)
+	ListSucceededJobsBySeries(context.Context, string) ([]store.Job, error)
+	ListSucceededJobsByIDs(context.Context, []int64) ([]store.Job, error)
+	ListSucceededJobsBySeriesIDs(context.Context, []string) ([]store.Job, error)
+	GetSucceededJob(context.Context, int64) (store.Job, error)
+	DeleteSucceededJob(context.Context, int64) error
+}
+
+type server struct {
+	fetcher  NewerFetcher
+	jobs     JobStore
+	videoDir string
+	now      func() time.Time
+	logger   *log.Logger
+	zone     *time.Location
+	tmpl     *template.Template
+	cacheMu  sync.Mutex
+	cache    map[string]cacheEntry
+}
+
+func NewHandler(fetcher NewerFetcher, jobs JobStore, videoDir string, now func() time.Time, logger *log.Logger) http.Handler {
+	tmpl := template.Must(template.ParseFS(assets, "templates/*.html"))
+	staticFiles, err := fs.Sub(assets, "static")
+	if err != nil {
+		panic(err)
+	}
+	zone, err := time.LoadLocation("Asia/Tokyo")
+	if err != nil {
+		panic(err)
+	}
+	if videoDir == "" {
+		videoDir = "/videos"
+	}
+	s := &server{fetcher: fetcher, jobs: jobs, videoDir: videoDir, now: now, logger: logger, zone: zone, tmpl: tmpl, cache: make(map[string]cacheEntry)}
+	mux := http.NewServeMux()
+	mux.Handle("GET /static/", http.StripPrefix("/static/", http.FileServerFS(staticFiles)))
+	mux.HandleFunc("GET /healthz", func(w http.ResponseWriter, _ *http.Request) {
+		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		_, _ = w.Write([]byte("ok\n"))
+	})
+	mux.HandleFunc("GET /{$}", s.home)
+	mux.HandleFunc("GET /newer", s.newerFragment)
+	mux.HandleFunc("POST /episodes/enqueue", s.enqueue)
+	mux.HandleFunc("POST /episodes/retry", s.retryEpisode)
+	mux.HandleFunc("GET /queue", s.queuePage)
+	mux.HandleFunc("GET /queue/list", s.queueFragment)
+	mux.HandleFunc("POST /jobs/{id}/retry", s.retryJob)
+	mux.HandleFunc("POST /jobs/{id}/cancel", s.cancelJob)
+	mux.HandleFunc("GET /subscriptions", s.subscriptionsPage)
+	mux.HandleFunc("GET /subscriptions/list", s.subscriptionsFragment)
+	mux.HandleFunc("POST /subscriptions/from-url/confirm", s.confirmSubscriptionURL)
+	mux.HandleFunc("POST /subscriptions/from-url/register", s.registerSubscriptionURL)
+	mux.HandleFunc("GET /subscriptions/from-url/cancel", s.cancelSubscriptionURL)
+	mux.HandleFunc("GET /subscriptions/choice", s.subscriptionChoice)
+	mux.HandleFunc("POST /subscriptions/register", s.registerSubscription)
+	mux.HandleFunc("POST /subscriptions/{id}/pause", s.pauseSubscription)
+	mux.HandleFunc("POST /subscriptions/{id}/resume", s.resumeSubscription)
+	mux.HandleFunc("POST /subscriptions/{id}/delete", s.deleteSubscription)
+	mux.HandleFunc("GET /library", s.libraryPage)
+	mux.HandleFunc("GET /library/series/{series_id}", s.librarySeriesPage)
+	mux.HandleFunc("GET /library/{id}", s.videoPage)
+	mux.HandleFunc("GET /videos/{id}", s.serveVideo)
+	mux.HandleFunc("POST /library/delete/confirm", s.confirmDeleteVideos)
+	mux.HandleFunc("POST /library/delete", s.deleteVideos)
+	return mux
+}

internal/web/handler_test.go

@@ -0,0 +1,63 @@
+package web
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestHealthz(t *testing.T) {
+	response := httptest.NewRecorder()
+	newTestHandler(&fakeFetcher{}, nil).ServeHTTP(response, httptest.NewRequest(http.MethodGet, "/healthz", nil))
+	if response.Code != http.StatusOK || response.Body.String() != "ok\n" {
+		t.Errorf("healthz: status=%d body=%q", response.Code, response.Body.String())
+	}
+}
+
+func TestPagesAndEmbeddedAssets(t *testing.T) {
+	handler := newTestHandler(&fakeFetcher{}, nil)
+	for _, tt := range []struct{ path, title string }{
+		{"/", "新着"}, {"/queue", "待ち行列"}, {"/subscriptions", "登録番組"}, {"/library", "ライブラリ"},
+	} {
+		t.Run(tt.path, func(t *testing.T) {
+			response := httptest.NewRecorder()
+			handler.ServeHTTP(response, httptest.NewRequest(http.MethodGet, tt.path, nil))
+			body := response.Body.String()
+			if response.Code != http.StatusOK || !strings.Contains(response.Header().Get("Content-Type"), "text/html") {
+				t.Fatalf("status=%d Content-Type=%q", response.Code, response.Header().Get("Content-Type"))
+			}
+			for _, want := range []string{"<h1>" + tt.title + "</h1>", "新着", "待ち行列", "登録番組", "ライブラリ", `hx-boost="true"`, "/static/htmx-2.0.11.min.js"} {
+				if !strings.Contains(body, want) {
+					t.Errorf("page missing %q", want)
+				}
+			}
+		})
+	}
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, httptest.NewRequest(http.MethodGet, "/static/htmx-2.0.11.min.js", nil))
+	if response.Code != http.StatusOK || !strings.Contains(response.Header().Get("Content-Type"), "javascript") || response.Body.Len() < 1000 || !strings.Contains(response.Body.String(), "htmx") {
+		t.Errorf("embedded htmx: status=%d Content-Type=%q bytes=%d", response.Code, response.Header().Get("Content-Type"), response.Body.Len())
+	}
+}
+
+func TestUnknownPathsAndMethods(t *testing.T) {
+	handler := newTestHandler(&fakeFetcher{}, nil)
+	for _, tt := range []struct {
+		name, method, path string
+		wantStatus         int
+	}{
+		{"unknown page", http.MethodGet, "/missing", http.StatusNotFound},
+		{"root prefix", http.MethodGet, "/missing/nested", http.StatusNotFound},
+		{"missing static asset", http.MethodGet, "/static/missing.js", http.StatusNotFound},
+		{"unsupported page method", http.MethodPost, "/queue", http.StatusMethodNotAllowed},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			response := httptest.NewRecorder()
+			handler.ServeHTTP(response, httptest.NewRequest(tt.method, tt.path, nil))
+			if response.Code != tt.wantStatus {
+				t.Errorf("%s %s: status=%d; want %d", tt.method, tt.path, response.Code, tt.wantStatus)
+			}
+		})
+	}
+}

internal/web/library.go

@@ -0,0 +1,492 @@
+package web
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"github.com/jackc/pgx/v5"
+)
+
+type libraryItemView struct {
+	ID                               int64
+	ThumbnailURL, SeriesTitle, Title string
+	BroadcasterName, DurationText    string
+	FileSizeText, FinishedAtText     string
+}
+
+type librarySeriesView struct {
+	SeriesID, SeriesTitle, LatestTitle string
+	ThumbnailURL, BroadcasterName      string
+	EpisodeCount                       int64
+	TotalSizeText, LatestFinishedText  string
+	Subscribed                         bool
+}
+
+type libraryView struct {
+	Series                    []librarySeriesView
+	SeriesCount, EpisodeCount int
+	TotalSizeText             string
+}
+
+type seriesView struct {
+	SeriesID, SeriesTitle, BroadcasterName string
+	EpisodeCount                           int
+	TotalSizeText, Sort                    string
+	Subscribed                             bool
+	Items                                  []libraryItemView
+}
+
+type episodeLinkView struct {
+	ID    int64
+	Title string
+}
+
+type videoView struct {
+	libraryItemView
+	VideoURL, SeriesURL string
+	Previous, Next      *episodeLinkView
+}
+
+type deleteGroupView struct {
+	SeriesID, SeriesTitle, TotalSizeText string
+	Items                                []libraryItemView
+}
+
+type deleteConfirmView struct {
+	Groups        []deleteGroupView
+	IDs           []int64
+	Count         int
+	TotalSizeText string
+	CancelURL     string
+}
+
+type deleteFailureView struct {
+	Title, Reason string
+}
+
+type deleteSeriesLinkView struct {
+	SeriesID, SeriesTitle string
+}
+
+type deleteResultView struct {
+	DeletedCount, ExcludedCount int
+	Failures                    []deleteFailureView
+	SeriesLinks                 []deleteSeriesLinkView
+}
+
+func (s *server) libraryPage(w http.ResponseWriter, r *http.Request) {
+	series, err := s.jobs.ListLibrarySeries(r.Context())
+	if err != nil {
+		s.logger.Printf("ライブラリの取得に失敗: %v", err)
+		http.Error(w, "ライブラリを取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	view := libraryView{Series: make([]librarySeriesView, 0, len(series)), SeriesCount: len(series)}
+	var totalBytes int64
+	for _, item := range series {
+		view.EpisodeCount += int(item.EpisodeCount)
+		totalBytes += item.TotalSizeBytes
+		viewItem := librarySeriesView{
+			SeriesID: item.SeriesID, SeriesTitle: item.SeriesTitle, LatestTitle: item.LatestTitle,
+			ThumbnailURL: thumbnailURL(item.ThumbnailPath), BroadcasterName: item.BroadcasterName,
+			EpisodeCount: item.EpisodeCount, TotalSizeText: formatBytes(float64(item.TotalSizeBytes)),
+			Subscribed: item.Subscribed,
+		}
+		if item.LatestFinishedAt != nil {
+			viewItem.LatestFinishedText = item.LatestFinishedAt.In(s.zone).Format("2006-01-02 15:04 MST")
+		}
+		view.Series = append(view.Series, viewItem)
+	}
+	view.TotalSizeText = fmt.Sprintf("%.2f GB", float64(totalBytes)/1_000_000_000)
+	s.render(w, "layout", page{Title: "ライブラリ", Library: &view})
+}
+
+func (s *server) librarySeriesPage(w http.ResponseWriter, r *http.Request) {
+	seriesID := r.PathValue("series_id")
+	if !seriesIDPattern.MatchString(seriesID) {
+		http.NotFound(w, r)
+		return
+	}
+	sortOrder := r.URL.Query().Get("sort")
+	if sortOrder == "" {
+		sortOrder = "latest"
+	}
+	if sortOrder != "latest" && sortOrder != "natural" {
+		http.Error(w, "並び順が不正です", http.StatusBadRequest)
+		return
+	}
+	jobs, err := s.jobs.ListSucceededJobsBySeries(r.Context(), seriesID)
+	if err != nil {
+		s.logger.Printf("番組のライブラリ取得に失敗: %v", err)
+		http.Error(w, "番組を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	if len(jobs) == 0 {
+		http.NotFound(w, r)
+		return
+	}
+	latest := latestFinishedJob(jobs)
+	if sortOrder == "natural" {
+		sortJobsNaturally(jobs)
+	} else {
+		sortJobsLatest(jobs)
+	}
+	subscribed, err := s.jobs.SubscribedSeries(r.Context(), []string{seriesID})
+	if err != nil {
+		s.logger.Printf("番組登録状態の取得に失敗: %v", err)
+		http.Error(w, "番組を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	view := seriesView{SeriesID: seriesID, SeriesTitle: latest.SeriesTitle,
+		BroadcasterName: latest.BroadcasterName, EpisodeCount: len(jobs),
+		Subscribed: subscribed[seriesID], Sort: sortOrder, Items: make([]libraryItemView, 0, len(jobs))}
+	var totalBytes int64
+	for _, job := range jobs {
+		if job.FileSizeBytes != nil {
+			totalBytes += *job.FileSizeBytes
+		}
+		view.Items = append(view.Items, s.libraryItem(job))
+	}
+	view.TotalSizeText = formatBytes(float64(totalBytes))
+	s.render(w, "layout", page{Title: latest.SeriesTitle, Series: &view})
+}
+
+func (s *server) videoPage(w http.ResponseWriter, r *http.Request) {
+	job, ok := s.succeededJob(w, r)
+	if !ok {
+		return
+	}
+	jobs, err := s.jobs.ListSucceededJobsBySeries(r.Context(), job.SeriesID)
+	if err != nil {
+		s.logger.Printf("前後の回の取得に失敗: %v", err)
+		http.Error(w, "動画を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	sortJobsNaturally(jobs)
+	view := videoView{libraryItemView: s.libraryItem(job), VideoURL: "/videos/" + strconv.FormatInt(job.ID, 10),
+		SeriesURL: "/library/series/" + job.SeriesID}
+	for i := range jobs {
+		if jobs[i].ID != job.ID {
+			continue
+		}
+		if i > 0 {
+			view.Previous = &episodeLinkView{ID: jobs[i-1].ID, Title: jobs[i-1].Title}
+		}
+		if i+1 < len(jobs) {
+			view.Next = &episodeLinkView{ID: jobs[i+1].ID, Title: jobs[i+1].Title}
+		}
+		break
+	}
+	s.render(w, "layout", page{Title: job.SeriesTitle + " " + job.Title, Video: &view})
+}
+
+func (s *server) libraryItem(job store.Job) libraryItemView {
+	item := libraryItemView{ID: job.ID, ThumbnailURL: thumbnailURL(job.ThumbnailPath),
+		SeriesTitle: job.SeriesTitle, Title: job.Title, BroadcasterName: job.BroadcasterName,
+		DurationText: fmt.Sprintf("%d分", durationMinutes(int64(job.DurationSeconds)))}
+	if job.FileSizeBytes != nil {
+		item.FileSizeText = formatBytes(float64(*job.FileSizeBytes))
+	}
+	if job.FinishedAt != nil {
+		item.FinishedAtText = job.FinishedAt.In(s.zone).Format("2006-01-02 15:04 MST")
+	}
+	return item
+}
+
+func thumbnailURL(path string) string {
+	if path == "" {
+		return ""
+	}
+	return "https://statics.tver.jp" + path
+}
+
+func latestFinishedJob(jobs []store.Job) store.Job {
+	latest := jobs[0]
+	for _, job := range jobs[1:] {
+		if jobFinishedLater(job, latest) {
+			latest = job
+		}
+	}
+	return latest
+}
+
+func sortJobsLatest(jobs []store.Job) {
+	sort.SliceStable(jobs, func(i, j int) bool { return jobFinishedLater(jobs[i], jobs[j]) })
+}
+
+func jobFinishedLater(left, right store.Job) bool {
+	if left.FinishedAt == nil || right.FinishedAt == nil {
+		if left.FinishedAt != right.FinishedAt {
+			return left.FinishedAt != nil
+		}
+		return left.ID > right.ID
+	}
+	if !left.FinishedAt.Equal(*right.FinishedAt) {
+		return left.FinishedAt.After(*right.FinishedAt)
+	}
+	return left.ID > right.ID
+}
+
+func (s *server) serveVideo(w http.ResponseWriter, r *http.Request) {
+	job, ok := s.succeededJob(w, r)
+	if !ok || job.FilePath == nil {
+		if ok {
+			http.NotFound(w, r)
+		}
+		return
+	}
+	root, err := os.OpenRoot(s.videoDir)
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	defer root.Close()
+	file, err := root.Open(*job.FilePath)
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	defer file.Close()
+	info, err := file.Stat()
+	if err != nil || !info.Mode().IsRegular() {
+		http.NotFound(w, r)
+		return
+	}
+	w.Header().Set("Content-Type", "video/mp4")
+	http.ServeContent(w, r, filepath.Base(*job.FilePath), info.ModTime(), file)
+}
+
+const maxDeleteSelections = 1000
+
+func (s *server) confirmDeleteVideos(w http.ResponseWriter, r *http.Request) {
+	ids, seriesIDs, ok := parseDeleteSelection(w, r, true)
+	if !ok {
+		return
+	}
+	jobsByID, err := s.jobs.ListSucceededJobsByIDs(r.Context(), ids)
+	if err != nil {
+		s.logger.Printf("削除対象IDの取得に失敗: %v", err)
+		http.Error(w, "削除対象を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	jobsBySeries, err := s.jobs.ListSucceededJobsBySeriesIDs(r.Context(), seriesIDs)
+	if err != nil {
+		s.logger.Printf("削除対象番組の取得に失敗: %v", err)
+		http.Error(w, "削除対象を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	byID := make(map[int64]store.Job, len(jobsByID)+len(jobsBySeries))
+	for _, job := range append(jobsByID, jobsBySeries...) {
+		byID[job.ID] = job
+	}
+	if len(byID) == 0 {
+		http.Error(w, "削除対象がありません", http.StatusBadRequest)
+		return
+	}
+	if len(byID) > maxDeleteSelections {
+		http.Error(w, fmt.Sprintf("削除対象が多すぎます（%d本）。番組を分けて選んでください", len(byID)), http.StatusBadRequest)
+		return
+	}
+	jobs := make([]store.Job, 0, len(byID))
+	for _, job := range byID {
+		jobs = append(jobs, job)
+	}
+	sort.Slice(jobs, func(i, j int) bool {
+		if jobs[i].SeriesTitle != jobs[j].SeriesTitle {
+			return jobs[i].SeriesTitle < jobs[j].SeriesTitle
+		}
+		return jobs[i].ID < jobs[j].ID
+	})
+	view := deleteConfirmView{IDs: make([]int64, 0, len(jobs)), Count: len(jobs), CancelURL: "/library"}
+	groupIndexes := make(map[string]int)
+	groupBytes := make(map[string]int64)
+	var totalBytes int64
+	for _, job := range jobs {
+		view.IDs = append(view.IDs, job.ID)
+		index, exists := groupIndexes[job.SeriesID]
+		if !exists {
+			index = len(view.Groups)
+			groupIndexes[job.SeriesID] = index
+			view.Groups = append(view.Groups, deleteGroupView{SeriesID: job.SeriesID, SeriesTitle: job.SeriesTitle})
+		}
+		view.Groups[index].Items = append(view.Groups[index].Items, s.libraryItem(job))
+		if job.FileSizeBytes != nil {
+			totalBytes += *job.FileSizeBytes
+			groupBytes[job.SeriesID] += *job.FileSizeBytes
+		}
+	}
+	for i := range view.Groups {
+		view.Groups[i].TotalSizeText = formatBytes(float64(groupBytes[view.Groups[i].SeriesID]))
+	}
+	view.TotalSizeText = formatBytes(float64(totalBytes))
+	if len(view.Groups) == 1 {
+		view.CancelURL = "/library/series/" + view.Groups[0].SeriesID
+	}
+	s.render(w, "layout", page{Title: "動画の削除確認", DeleteConfirm: &view})
+}
+
+func parseDeleteSelection(w http.ResponseWriter, r *http.Request, includeSeries bool) ([]int64, []string, bool) {
+	if err := r.ParseForm(); err != nil {
+		http.Error(w, "入力が不正です", http.StatusBadRequest)
+		return nil, nil, false
+	}
+	idSet := make(map[int64]struct{})
+	for _, raw := range r.Form["id"] {
+		id, err := strconv.ParseInt(raw, 10, 64)
+		if err != nil || id <= 0 {
+			http.Error(w, "動画IDが不正です", http.StatusBadRequest)
+			return nil, nil, false
+		}
+		idSet[id] = struct{}{}
+	}
+	seriesSet := make(map[string]struct{})
+	if includeSeries {
+		for _, seriesID := range r.Form["series_id"] {
+			if !seriesIDPattern.MatchString(seriesID) {
+				http.Error(w, "番組IDが不正です", http.StatusBadRequest)
+				return nil, nil, false
+			}
+			seriesSet[seriesID] = struct{}{}
+		}
+	}
+	if len(idSet)+len(seriesSet) == 0 {
+		http.Error(w, "削除対象がありません", http.StatusBadRequest)
+		return nil, nil, false
+	}
+	if len(idSet)+len(seriesSet) > maxDeleteSelections {
+		http.Error(w, "削除対象が多すぎます", http.StatusBadRequest)
+		return nil, nil, false
+	}
+	ids := make([]int64, 0, len(idSet))
+	for id := range idSet {
+		ids = append(ids, id)
+	}
+	seriesIDs := make([]string, 0, len(seriesSet))
+	for seriesID := range seriesSet {
+		seriesIDs = append(seriesIDs, seriesID)
+	}
+	return ids, seriesIDs, true
+}
+
+func (s *server) deleteVideos(w http.ResponseWriter, r *http.Request) {
+	ids, _, ok := parseDeleteSelection(w, r, false)
+	if !ok {
+		return
+	}
+	jobs, err := s.jobs.ListSucceededJobsByIDs(r.Context(), ids)
+	if err != nil {
+		s.logger.Printf("削除対象の取得に失敗: %v", err)
+		http.Error(w, "削除対象を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	view := deleteResultView{ExcludedCount: len(ids) - len(jobs)}
+	var root *os.Root
+	needsRoot := false
+	for _, job := range jobs {
+		needsRoot = needsRoot || job.FilePath != nil
+	}
+	if needsRoot {
+		root, err = os.OpenRoot(s.videoDir)
+		if err == nil {
+			defer root.Close()
+		}
+	}
+	affectedSeries := make(map[string]string)
+	for _, job := range jobs {
+		affectedSeries[job.SeriesID] = job.SeriesTitle
+		if err != nil && job.FilePath != nil {
+			s.logger.Printf("動画ルートを開けないため削除に失敗 id=%d: %v", job.ID, err)
+			view.Failures = append(view.Failures, deleteFailureView{Title: job.Title, Reason: "動画ファイルを削除できませんでした"})
+			continue
+		}
+		if deleteErr := s.deleteJob(r.Context(), root, job); deleteErr != nil {
+			s.logger.Printf("動画の削除に失敗 id=%d: %v", job.ID, deleteErr)
+			view.Failures = append(view.Failures, deleteFailureView{Title: job.Title, Reason: "削除できませんでした"})
+			continue
+		}
+		view.DeletedCount++
+	}
+	for seriesID, title := range affectedSeries {
+		remaining, listErr := s.jobs.ListSucceededJobsBySeries(r.Context(), seriesID)
+		if listErr != nil {
+			s.logger.Printf("削除後の番組取得に失敗 series_id=%s: %v", seriesID, listErr)
+			continue
+		}
+		if len(remaining) > 0 {
+			view.SeriesLinks = append(view.SeriesLinks, deleteSeriesLinkView{SeriesID: seriesID, SeriesTitle: title})
+		}
+	}
+	sort.Slice(view.SeriesLinks, func(i, j int) bool { return view.SeriesLinks[i].SeriesTitle < view.SeriesLinks[j].SeriesTitle })
+	s.render(w, "layout", page{Title: "動画の削除結果", DeleteResult: &view})
+}
+
+func (s *server) deleteJob(ctx context.Context, root *os.Root, job store.Job) error {
+	if job.FilePath != nil {
+		if !filepath.IsLocal(*job.FilePath) {
+			return errors.New("動画ファイルの場所が不正")
+		}
+		if root == nil {
+			return errors.New("動画ルートを開けない")
+		}
+		file, err := root.Open(*job.FilePath)
+		if err == nil {
+			_ = file.Close()
+		} else if !errors.Is(err, os.ErrNotExist) {
+			return fmt.Errorf("動画ファイルの検査: %w", err)
+		}
+		if err := root.Remove(*job.FilePath); err != nil && !errors.Is(err, os.ErrNotExist) {
+			return fmt.Errorf("動画ファイルの削除: %w", err)
+		}
+		s.removeEmptyVideoParent(root, *job.FilePath)
+	}
+	if err := s.jobs.DeleteSucceededJob(ctx, job.ID); err != nil {
+		return fmt.Errorf("動画の記録削除: %w", err)
+	}
+	return nil
+}
+
+func (s *server) removeEmptyVideoParent(root *os.Root, filePath string) {
+	parent := filepath.Dir(filePath)
+	if parent == "." || !filepath.IsLocal(parent) {
+		return
+	}
+	info, err := root.Lstat(parent)
+	if err != nil {
+		if !errors.Is(err, os.ErrNotExist) {
+			s.logger.Printf("動画フォルダの確認に失敗: %v", err)
+		}
+		return
+	}
+	if !info.IsDir() {
+		return
+	}
+	if err := root.Remove(parent); err != nil && !errors.Is(err, os.ErrNotExist) {
+		s.logger.Printf("空の動画フォルダを削除できませんでした: %v", err)
+	}
+}
+
+func (s *server) succeededJob(w http.ResponseWriter, r *http.Request) (store.Job, bool) {
+	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
+	if err != nil || id <= 0 {
+		http.NotFound(w, r)
+		return store.Job{}, false
+	}
+	job, err := s.jobs.GetSucceededJob(r.Context(), id)
+	if errors.Is(err, pgx.ErrNoRows) {
+		http.NotFound(w, r)
+		return store.Job{}, false
+	}
+	if err != nil {
+		s.logger.Printf("完了ジョブの取得に失敗: %v", err)
+		http.Error(w, "動画を取得できませんでした", http.StatusInternalServerError)
+		return store.Job{}, false
+	}
+	return job, true
+}

internal/web/library_test.go

@@ -0,0 +1,639 @@
+package web
+
+import (
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+func libraryJob(id int64, relative string) store.Job {
+	size := int64(10)
+	finished := time.Date(2026, 10, 3, 1, 2, 3, 0, time.UTC)
+	return store.Job{ID: id, EpisodeID: "ep1", SeriesID: "series1", SeriesTitle: `<script>番組</script>`, Title: `<b>第1話</b>`,
+		BroadcasterName: "放送局", DurationSeconds: 61, ThumbnailPath: "/thumb.jpg", Status: "succeeded",
+		FilePath: &relative, FileSizeBytes: &size, FinishedAt: &finished}
+}
+
+func TestLibraryAndPlaybackPage(t *testing.T) {
+	dir := t.TempDir()
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	page := getPage(handler, "/library")
+	if page.Code != http.StatusOK {
+		t.Fatalf("library status=%d", page.Code)
+	}
+	body := page.Body.String()
+	for _, want := range []string{"&lt;script&gt;番組&lt;/script&gt;", "&lt;b&gt;第1話&lt;/b&gt;", "放送局", "1番組・1本・0.00 GB", "10.0 B", "2026-10-03 10:02 JST", "https://statics.tver.jp/thumb.jpg", `/library/series/series1`, "1本"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("library missing %q", want)
+		}
+	}
+	if strings.Contains(body, "<script>番組</script>") {
+		t.Fatal("library fields were not escaped")
+	}
+	video := getPage(handler, "/library/1")
+	if video.Code != http.StatusOK || !strings.Contains(video.Body.String(), `<video controls`) || !strings.Contains(video.Body.String(), `src="/videos/1"`) || !strings.Contains(video.Body.String(), `action="/library/delete/confirm"`) || strings.Contains(video.Body.String(), `hx-confirm`) || !strings.Contains(video.Body.String(), `/library/series/series1`) || !strings.Contains(video.Body.String(), `前の回はありません`) || !strings.Contains(video.Body.String(), `次の回はありません`) {
+		t.Fatalf("video page: %d %s", video.Code, video.Body.String())
+	}
+	for _, path := range []string{"/library/bad", "/library/99", "/library/1/delete"} {
+		response := getPage(handler, path)
+		want := http.StatusNotFound
+		if response.Code != want {
+			t.Errorf("%s status=%d want=%d", path, response.Code, want)
+		}
+	}
+}
+
+func TestLibrarySeriesPageSortingSubscriptionAndNotFound(t *testing.T) {
+	old := libraryJob(2, "show/old.mp4")
+	old.EpisodeID = "ep2"
+	old.Title = "第2話"
+	old.SeriesTitle = "旧番組名"
+	old.BroadcasterName = "旧局"
+	oldFinished := time.Date(2026, 10, 1, 0, 0, 0, 0, time.UTC)
+	old.FinishedAt = &oldFinished
+	latest := libraryJob(10, "show/latest.mp4")
+	latest.EpisodeID = "ep10"
+	latest.Title = "第10話"
+	latest.SeriesTitle = `<em>新番組名</em>`
+	latest.BroadcasterName = "新局"
+	latestFinished := oldFinished.Add(time.Hour)
+	latest.FinishedAt = &latestFinished
+	jobs := &fakeJobStore{
+		jobs:          map[string]store.Job{"ep2": old, "ep10": latest},
+		subscriptions: map[string]store.Subscription{"series1": {SeriesID: "series1"}},
+	}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, t.TempDir(), nil)
+	library := getPage(handler, "/library")
+	if library.Code != http.StatusOK || !strings.Contains(library.Body.String(), "登録中") || !strings.Contains(library.Body.String(), "2本") {
+		t.Fatalf("library series card: status=%d body=%s", library.Code, library.Body.String())
+	}
+
+	page := getPage(handler, "/library/series/series1")
+	if page.Code != http.StatusOK {
+		t.Fatalf("series status=%d body=%s", page.Code, page.Body.String())
+	}
+	body := page.Body.String()
+	for _, want := range []string{"ライブラリ", "&lt;em&gt;新番組名&lt;/em&gt;", "登録中", "新局・2本・20.0 B", `/library/10`, `/library/2`, `?sort=natural`} {
+		if !strings.Contains(body, want) {
+			t.Errorf("series page missing %q", want)
+		}
+	}
+	if strings.Index(body, `/library/10`) > strings.Index(body, `/library/2`) {
+		t.Fatal("default order is not latest first")
+	}
+	natural := getPage(handler, "/library/series/series1?sort=natural")
+	if natural.Code != http.StatusOK || strings.Index(natural.Body.String(), `/library/2`) > strings.Index(natural.Body.String(), `/library/10`) {
+		t.Fatalf("natural order: status=%d body=%s", natural.Code, natural.Body.String())
+	}
+	if got := getPage(handler, "/library/series/missing").Code; got != http.StatusNotFound {
+		t.Fatalf("missing series status=%d", got)
+	}
+	if got := getPage(handler, "/library/series/bad-id").Code; got != http.StatusNotFound {
+		t.Fatalf("invalid series status=%d", got)
+	}
+	if got := getPage(handler, "/library/series/series1?sort=bad").Code; got != http.StatusBadRequest {
+		t.Fatalf("invalid sort status=%d", got)
+	}
+}
+
+func TestLibraryOmitsSubscriptionMarkerForUnregisteredSeries(t *testing.T) {
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	page := getPage(newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, t.TempDir(), nil), "/library")
+	if page.Code != http.StatusOK || strings.Contains(page.Body.String(), "登録中") {
+		t.Fatalf("unregistered series: status=%d body=%s", page.Code, page.Body.String())
+	}
+}
+
+func TestLibraryPagesDoNotInspectVideoDirectory(t *testing.T) {
+	missingVideoDir := filepath.Join(t.TempDir(), "missing-video-root")
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "missing/video.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, missingVideoDir, nil)
+	for _, path := range []string{"/library", "/library/series/series1"} {
+		response := getPage(handler, path)
+		if response.Code != http.StatusOK {
+			t.Errorf("DB由来の一覧 %s: status=%d body=%s", path, response.Code, response.Body.String())
+		}
+	}
+	if _, err := os.Stat(missingVideoDir); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("一覧表示が動画ルートを作成または走査した: %v", err)
+	}
+}
+
+func TestPlaybackPreviousAndNextNaturalOrder(t *testing.T) {
+	jobs := make(map[string]store.Job)
+	for _, data := range []struct {
+		id    int64
+		epid  string
+		title string
+	}{{2, "ep2", "第2話"}, {10, "ep10", "第10話"}, {9, "ep9", "第9話"}} {
+		job := libraryJob(data.id, "show/video.mp4")
+		job.EpisodeID = data.epid
+		job.Title = data.title
+		jobs[data.epid] = job
+	}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, &fakeJobStore{jobs: jobs}, t.TempDir(), nil)
+	middle := getPage(handler, "/library/9")
+	for _, want := range []string{`href="/library/2"`, `前の回: 第2話`, `href="/library/10"`, `次の回: 第10話`} {
+		if !strings.Contains(middle.Body.String(), want) {
+			t.Errorf("middle playback missing %q", want)
+		}
+	}
+	first := getPage(handler, "/library/2")
+	if !strings.Contains(first.Body.String(), "前の回はありません") || !strings.Contains(first.Body.String(), `href="/library/9"`) {
+		t.Fatalf("first playback navigation: %s", first.Body.String())
+	}
+	last := getPage(handler, "/library/10")
+	if !strings.Contains(last.Body.String(), "次の回はありません") || !strings.Contains(last.Body.String(), `href="/library/9"`) {
+		t.Fatalf("last playback navigation: %s", last.Body.String())
+	}
+}
+
+func TestLibraryRejectsInvalidJobIDs(t *testing.T) {
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, t.TempDir(), nil)
+	for _, id := range []string{"0", "-1", "bad", "999999999999999999999999999999999999"} {
+		for _, path := range []string{"/library/" + id, "/videos/" + id} {
+			if got := getPage(handler, path).Code; got != http.StatusNotFound {
+				t.Errorf("GET %s: %d", path, got)
+			}
+		}
+		if got := postForm(handler, "/library/delete", url.Values{"id": {id}}).Code; got != http.StatusBadRequest {
+			t.Errorf("POST delete id=%q: %d", id, got)
+		}
+	}
+}
+
+func TestVideoRangeAndMissingFile(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.Mkdir(filepath.Join(dir, "show"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	content := []byte("0123456789")
+	if err := os.WriteFile(filepath.Join(dir, "show", "video.mp4"), content, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	request := httptest.NewRequest(http.MethodGet, "/videos/1?file_path=../../outside.mp4", nil)
+	request.Header.Set("Range", "bytes=2-5")
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusPartialContent || response.Body.String() != "2345" || response.Header().Get("Content-Range") != "bytes 2-5/10" || response.Header().Get("Content-Type") != "video/mp4" {
+		t.Fatalf("range: status=%d range=%q type=%q body=%q", response.Code, response.Header().Get("Content-Range"), response.Header().Get("Content-Type"), response.Body.String())
+	}
+	full := getPage(handler, "/videos/1")
+	if full.Code != http.StatusOK || full.Body.String() != string(content) || full.Header().Get("Content-Type") != "video/mp4" || full.Header().Get("Accept-Ranges") != "bytes" {
+		t.Fatalf("full video: status=%d type=%q ranges=%q body=%q", full.Code, full.Header().Get("Content-Type"), full.Header().Get("Accept-Ranges"), full.Body.String())
+	}
+	request = httptest.NewRequest(http.MethodGet, "/videos/1", nil)
+	request.Header.Set("Range", "bytes=20-30")
+	response = httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusRequestedRangeNotSatisfiable || response.Header().Get("Content-Range") != "bytes */10" {
+		t.Fatalf("range outside: status=%d range=%q", response.Code, response.Header().Get("Content-Range"))
+	}
+	if err := os.Remove(filepath.Join(dir, "show", "video.mp4")); err != nil {
+		t.Fatal(err)
+	}
+	if got := getPage(handler, "/videos/1").Code; got != http.StatusNotFound {
+		t.Fatalf("missing file status=%d", got)
+	}
+	jobs.jobs["ep1"] = store.Job{ID: 1, Status: "queued"}
+	if got := getPage(handler, "/videos/1").Code; got != http.StatusNotFound {
+		t.Fatalf("unfinished status=%d", got)
+	}
+	if got := getPage(handler, "/library/1").Code; got != http.StatusNotFound {
+		t.Fatalf("unfinished playback page status=%d", got)
+	}
+	missingPath := libraryJob(1, "show/video.mp4")
+	missingPath.FilePath = nil
+	jobs.jobs["ep1"] = missingPath
+	if got := getPage(handler, "/videos/1").Code; got != http.StatusNotFound {
+		t.Fatalf("missing DB file path status=%d", got)
+	}
+}
+
+func TestVideoPathTraversalAndSymlinkAreRejected(t *testing.T) {
+	dir := t.TempDir()
+	outside := t.TempDir()
+	outsideFile := filepath.Join(outside, "outside.mp4")
+	if err := os.WriteFile(outsideFile, []byte("secret"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink(outsideFile, filepath.Join(dir, "link.mp4")); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink(outside, filepath.Join(dir, "linked-directory")); err != nil {
+		t.Fatal(err)
+	}
+	relativeOutsideFile, err := filepath.Rel(dir, outsideFile)
+	if err != nil {
+		t.Fatal(err)
+	}
+	relativeOutsideDir, err := filepath.Rel(dir, outside)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink(relativeOutsideFile, filepath.Join(dir, "relative-link.mp4")); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink(relativeOutsideDir, filepath.Join(dir, "relative-linked-directory")); err != nil {
+		t.Fatal(err)
+	}
+	for _, relative := range []string{"../outside.mp4", "show/../../outside.mp4", outsideFile,
+		"link.mp4", "linked-directory/outside.mp4", "linked-directory/missing.mp4",
+		"relative-link.mp4", "relative-linked-directory/outside.mp4", "relative-linked-directory/missing.mp4"} {
+		jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, relative)}}
+		handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+		if got := getPage(handler, "/videos/1").Code; got != http.StatusNotFound {
+			t.Errorf("path %q status=%d", relative, got)
+		}
+		deleted := postForm(handler, "/library/delete", url.Values{"id": {"1"}})
+		if deleted.Code != http.StatusOK || len(jobs.jobs) != 1 || !strings.Contains(deleted.Body.String(), "失敗: 1件") {
+			t.Errorf("delete path %q status=%d jobs=%d", relative, deleted.Code, len(jobs.jobs))
+		}
+	}
+	if got, err := os.ReadFile(outsideFile); err != nil || string(got) != "secret" {
+		t.Fatalf("outside target was changed: content=%q err=%v", got, err)
+	}
+	for _, link := range []string{"link.mp4", "linked-directory", "relative-link.mp4", "relative-linked-directory"} {
+		if _, err := os.Lstat(filepath.Join(dir, link)); err != nil {
+			t.Errorf("rejected link %q was changed: %v", link, err)
+		}
+	}
+}
+
+func TestVideoSymlinkWithinRootCanBeServedAndDeleted(t *testing.T) {
+	dir := t.TempDir()
+	target := filepath.Join(dir, "target.mp4")
+	if err := os.WriteFile(target, []byte("video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink("target.mp4", filepath.Join(dir, "link.mp4")); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "link.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	if response := getPage(handler, "/videos/1"); response.Code != http.StatusOK || response.Body.String() != "video" {
+		t.Fatalf("serve: status=%d body=%q", response.Code, response.Body.String())
+	}
+	if response := postForm(handler, "/library/delete", url.Values{"id": {"1"}}); response.Code != http.StatusOK || len(jobs.jobs) != 0 {
+		t.Fatalf("delete: status=%d jobs=%d", response.Code, len(jobs.jobs))
+	}
+	if _, err := os.Stat(target); err != nil {
+		t.Fatalf("symlink target was removed: %v", err)
+	}
+	if _, err := os.Lstat(filepath.Join(dir, "link.mp4")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("symlink itself remains: %v", err)
+	}
+}
+
+func TestVideoSymlinkedDirectoryWithinRootCanBeServedAndDeleted(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.Mkdir(filepath.Join(dir, "target"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	target := filepath.Join(dir, "target", "video.mp4")
+	if err := os.WriteFile(target, []byte("video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink("target", filepath.Join(dir, "linked-directory")); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "linked-directory/video.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	if response := getPage(handler, "/videos/1"); response.Code != http.StatusOK || response.Body.String() != "video" {
+		t.Fatalf("serve: status=%d body=%q", response.Code, response.Body.String())
+	}
+	if response := postForm(handler, "/library/delete", url.Values{"id": {"1"}}); response.Code != http.StatusOK || len(jobs.jobs) != 0 {
+		t.Fatalf("delete: status=%d jobs=%d", response.Code, len(jobs.jobs))
+	}
+	if _, err := os.Stat(target); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("target file remains: %v", err)
+	}
+	if _, err := os.Lstat(filepath.Join(dir, "linked-directory")); err != nil {
+		t.Fatalf("directory symlink was removed: %v", err)
+	}
+}
+
+func TestVideoAbsoluteSymlinkWithinRootIsRejectedByOSRoot(t *testing.T) {
+	dir := t.TempDir()
+	target := filepath.Join(dir, "target.mp4")
+	if err := os.WriteFile(target, []byte("video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Symlink(target, filepath.Join(dir, "absolute-link.mp4")); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "absolute-link.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	if got := getPage(handler, "/videos/1").Code; got != http.StatusNotFound {
+		t.Fatalf("absolute symlink serve status=%d", got)
+	}
+	if response := postForm(handler, "/library/delete", url.Values{"id": {"1"}}); response.Code != http.StatusOK || len(jobs.jobs) != 1 || !strings.Contains(response.Body.String(), "失敗: 1件") {
+		t.Fatalf("absolute symlink delete: status=%d jobs=%d", response.Code, len(jobs.jobs))
+	}
+	if _, err := os.Stat(target); err != nil {
+		t.Fatalf("target was changed: %v", err)
+	}
+}
+
+func TestDeleteVideoFileThenRecord(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.Mkdir(filepath.Join(dir, "show"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	path := filepath.Join(dir, "show", "video.mp4")
+	if err := os.WriteFile(path, []byte("video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	fileWasGoneBeforeRecordDelete := false
+	jobs.beforeDeleteSucceeded = func() {
+		_, err := os.Stat(path)
+		fileWasGoneBeforeRecordDelete = errors.Is(err, os.ErrNotExist)
+	}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	response := postForm(handler, "/library/delete", url.Values{"id": {"1"}})
+	if response.Code != http.StatusOK || len(jobs.jobs) != 0 || !fileWasGoneBeforeRecordDelete || !strings.Contains(response.Body.String(), "削除: 1件") {
+		t.Fatalf("delete: status=%d location=%q jobs=%d", response.Code, response.Header().Get("Location"), len(jobs.jobs))
+	}
+	if _, err := os.Stat(path); !os.IsNotExist(err) {
+		t.Fatalf("file remains: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(dir, "show")); !os.IsNotExist(err) {
+		t.Fatalf("empty series folder remains: %v", err)
+	}
+	jobs.jobs["ep1"] = libraryJob(1, "show/missing.mp4")
+	if got := postForm(handler, "/library/delete", url.Values{"id": {"1"}}).Code; got != http.StatusOK || len(jobs.jobs) != 0 {
+		t.Fatalf("missing file delete: status=%d jobs=%d", got, len(jobs.jobs))
+	}
+}
+
+func TestDeleteRedirectsToSeriesWhenEpisodesRemainAndKeepsNonemptyFolder(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.Mkdir(filepath.Join(dir, "show"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "show", "one.mp4"), []byte("one"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "show", "two.mp4"), []byte("two"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	first := libraryJob(1, "show/one.mp4")
+	second := libraryJob(2, "show/two.mp4")
+	second.EpisodeID = "ep2"
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": first, "ep2": second}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	response := postForm(handler, "/library/delete", url.Values{"id": {"1"}})
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "/library/series/series1") || len(jobs.jobs) != 1 {
+		t.Fatalf("delete: status=%d location=%q jobs=%d", response.Code, response.Header().Get("Location"), len(jobs.jobs))
+	}
+	if _, err := os.Stat(filepath.Join(dir, "show")); err != nil {
+		t.Fatalf("nonempty series folder removed: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(dir, "show", "two.mp4")); err != nil {
+		t.Fatalf("remaining video removed: %v", err)
+	}
+}
+
+func TestDeleteVideoAtRootNeverRemovesVideoRoot(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.WriteFile(filepath.Join(dir, "video.mp4"), []byte("video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "video.mp4")}}
+	response := postForm(newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil), "/library/delete", url.Values{"id": {"1"}})
+	if response.Code != http.StatusOK {
+		t.Fatalf("delete status=%d", response.Code)
+	}
+	if info, err := os.Stat(dir); err != nil || !info.IsDir() {
+		t.Fatalf("video root was removed: info=%v err=%v", info, err)
+	}
+}
+
+func TestDeleteFailureKeepsRecord(t *testing.T) {
+	dir := t.TempDir()
+	blocked := filepath.Join(dir, "blocked")
+	if err := os.Mkdir(blocked, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(blocked, "child"), []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "blocked")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+	response := postForm(handler, "/library/delete", url.Values{"id": {"1"}})
+	if response.Code != http.StatusOK || len(jobs.jobs) != 1 || !strings.Contains(response.Body.String(), "失敗: 1件") {
+		t.Fatalf("failure: status=%d jobs=%d body=%s", response.Code, len(jobs.jobs), response.Body.String())
+	}
+}
+
+func TestDeleteConfirmationSelectionValidationAndDeduplication(t *testing.T) {
+	first := libraryJob(1, "show/one.mp4")
+	second := libraryJob(2, "show/two.mp4")
+	second.EpisodeID = "ep2"
+	second.Title = `<img src=x onerror=alert(1)>`
+	third := libraryJob(3, "other/three.mp4")
+	third.EpisodeID = "ep3"
+	third.SeriesID = "series2"
+	third.SeriesTitle = "別番組"
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": first, "ep2": second, "ep3": third}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, t.TempDir(), nil)
+
+	for name, values := range map[string]url.Values{
+		"IDのみ":    {"id": {"1"}},
+		"番組のみ":    {"series_id": {"series2"}},
+		"両方と重複除去": {"id": {"1"}, "series_id": {"series1"}},
+	} {
+		t.Run(name, func(t *testing.T) {
+			response := postForm(handler, "/library/delete/confirm", values)
+			if response.Code != http.StatusOK || len(jobs.jobs) != 3 {
+				t.Fatalf("status=%d jobs=%d body=%s", response.Code, len(jobs.jobs), response.Body.String())
+			}
+			if strings.Contains(response.Body.String(), `<img src=x`) || strings.Contains(response.Body.String(), `<script>番組</script>`) {
+				t.Fatal("確認画面でHTMLがエスケープされていない")
+			}
+			if name == "両方と重複除去" && (!strings.Contains(response.Body.String(), `&lt;script&gt;番組&lt;/script&gt;`) || !strings.Contains(response.Body.String(), `&lt;img src=x onerror=alert(1)&gt;`)) {
+				t.Fatalf("番組名または回タイトルのエスケープ結果がない: %s", response.Body.String())
+			}
+			if name == "両方と重複除去" && strings.Count(response.Body.String(), `name="id"`) != 2 {
+				t.Fatalf("重複除去後のhidden ID: %s", response.Body.String())
+			}
+		})
+	}
+	for name, values := range map[string]url.Values{
+		"対象なし":   {},
+		"該当なし":   {"id": {"99"}},
+		"不正ID":   {"id": {"bad"}},
+		"ゼロID":   {"id": {"0"}},
+		"不正番組ID": {"series_id": {"bad-id"}},
+	} {
+		t.Run(name, func(t *testing.T) {
+			if got := postForm(handler, "/library/delete/confirm", values).Code; got != http.StatusBadRequest {
+				t.Fatalf("status=%d", got)
+			}
+		})
+	}
+	tooMany := url.Values{}
+	for i := 1; i <= maxDeleteSelections+1; i++ {
+		tooMany.Add("id", strconv.Itoa(i))
+	}
+	if got := postForm(handler, "/library/delete/confirm", tooMany).Code; got != http.StatusBadRequest {
+		t.Fatalf("上限超過 status=%d", got)
+	}
+	atLimit := url.Values{}
+	for i := 1; i <= maxDeleteSelections; i++ {
+		atLimit.Add("id", strconv.Itoa(i))
+	}
+	if response := postForm(handler, "/library/delete/confirm", atLimit); response.Code != http.StatusOK || len(jobs.jobs) != 3 {
+		t.Fatalf("入力上限ちょうど: status=%d jobs=%d", response.Code, len(jobs.jobs))
+	}
+}
+
+func TestDeleteConfirmationRejectsExpandedSelectionOverLimit(t *testing.T) {
+	makeJobs := func(count int) map[string]store.Job {
+		jobs := make(map[string]store.Job, count)
+		for i := 1; i <= count; i++ {
+			job := libraryJob(int64(i), "show/video.mp4")
+			job.EpisodeID = "ep" + strconv.Itoa(i)
+			jobs[job.EpisodeID] = job
+		}
+		return jobs
+	}
+
+	atLimit := &fakeJobStore{jobs: makeJobs(maxDeleteSelections)}
+	response := postForm(newTestHandlerWithVideoDir(&fakeFetcher{}, atLimit, t.TempDir(), nil),
+		"/library/delete/confirm", url.Values{"series_id": {"series1"}})
+	if response.Code != http.StatusOK || len(atLimit.jobs) != maxDeleteSelections {
+		t.Fatalf("上限ちょうど: status=%d jobs=%d", response.Code, len(atLimit.jobs))
+	}
+
+	overLimit := &fakeJobStore{jobs: makeJobs(maxDeleteSelections + 1)}
+	response = postForm(newTestHandlerWithVideoDir(&fakeFetcher{}, overLimit, t.TempDir(), nil),
+		"/library/delete/confirm", url.Values{"series_id": {"series1"}})
+	if response.Code != http.StatusBadRequest || len(overLimit.jobs) != maxDeleteSelections+1 ||
+		!strings.Contains(response.Body.String(), strconv.Itoa(maxDeleteSelections+1)+"本") ||
+		!strings.Contains(response.Body.String(), "番組を分けて選んでください") {
+		t.Fatalf("上限超過: status=%d jobs=%d body=%s", response.Code, len(overLimit.jobs), response.Body.String())
+	}
+}
+
+func TestBulkDeleteContinuesAfterFailureAndDoesNotExpandSeries(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.MkdirAll(filepath.Join(dir, "show"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "show", "one.mp4"), []byte("one"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Mkdir(filepath.Join(dir, "show", "blocked"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "show", "blocked", "child"), []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	first := libraryJob(1, "show/one.mp4")
+	blocked := libraryJob(2, "show/blocked")
+	blocked.EpisodeID = "ep2"
+	blocked.Title = "削除失敗回"
+	newAfterConfirmation := libraryJob(3, "show/new.mp4")
+	newAfterConfirmation.EpisodeID = "ep3"
+	newAfterConfirmation.Title = "確認後の新着"
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": first, "ep2": blocked, "ep3": newAfterConfirmation}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, dir, nil)
+
+	response := postForm(handler, "/library/delete", url.Values{
+		"id":        {"1", "2", "99"},
+		"series_id": {"series1"},
+	})
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "削除: 1件") || !strings.Contains(response.Body.String(), "失敗: 1件") || !strings.Contains(response.Body.String(), "対象外: 1件") {
+		t.Fatalf("status=%d body=%s", response.Code, response.Body.String())
+	}
+	if _, ok := jobs.jobs["ep1"]; ok {
+		t.Fatal("正常な回の記録が残った")
+	}
+	if _, ok := jobs.jobs["ep2"]; !ok {
+		t.Fatal("失敗した回の記録が消えた")
+	}
+	if _, ok := jobs.jobs["ep3"]; !ok {
+		t.Fatal("確認後に増えた回が消えた")
+	}
+	if strings.Contains(response.Body.String(), filepath.Join(dir, "show", "blocked")) {
+		t.Fatal("内部パスが結果画面に出た")
+	}
+	for _, detail := range []string{"directory not empty", "show/blocked"} {
+		if strings.Contains(response.Body.String(), detail) {
+			t.Fatalf("エラー詳細が結果画面に出た: %q", detail)
+		}
+	}
+}
+
+func TestBulkDeleteWhenVideoRootCannotOpenDeletesOnlyRecordWithoutFile(t *testing.T) {
+	withFile := libraryJob(1, "show/video.mp4")
+	withFile.Title = `<img src=x onerror=alert(1)>`
+	withoutFile := libraryJob(2, "")
+	withoutFile.EpisodeID = "ep2"
+	withoutFile.Title = "記録だけの回"
+	withoutFile.FilePath = nil
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": withFile, "ep2": withoutFile}}
+	missingRoot := filepath.Join(t.TempDir(), "missing-video-root")
+
+	response := postForm(newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, missingRoot, nil),
+		"/library/delete", url.Values{"id": {"1", "2"}})
+	if response.Code != http.StatusOK ||
+		!strings.Contains(response.Body.String(), "削除: 1件") ||
+		!strings.Contains(response.Body.String(), "失敗: 1件") {
+		t.Fatalf("status=%d body=%s", response.Code, response.Body.String())
+	}
+	if _, ok := jobs.jobs["ep1"]; !ok {
+		t.Fatal("動画ルートを開けない回の記録が消えた")
+	}
+	if _, ok := jobs.jobs["ep2"]; ok {
+		t.Fatal("file_pathがNULLの回の記録が残った")
+	}
+	for _, secret := range []string{missingRoot, "no such file or directory", `<img src=x`} {
+		if strings.Contains(response.Body.String(), secret) {
+			t.Fatalf("内部情報または未エスケープHTMLが結果画面に出た: %q", secret)
+		}
+	}
+	if !strings.Contains(response.Body.String(), `&lt;img src=x onerror=alert(1)&gt;`) {
+		t.Fatalf("失敗した回のタイトルが安全に表示されていない: %s", response.Body.String())
+	}
+}
+
+func TestBulkDeleteRejectsEmptySelection(t *testing.T) {
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	response := postForm(newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, t.TempDir(), nil), "/library/delete", nil)
+	if response.Code != http.StatusBadRequest || len(jobs.jobs) != 1 {
+		t.Fatalf("status=%d jobs=%d", response.Code, len(jobs.jobs))
+	}
+}
+
+func TestLibraryDeleteEntryFormsAndOldRoute(t *testing.T) {
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep1": libraryJob(1, "show/video.mp4")}}
+	handler := newTestHandlerWithVideoDir(&fakeFetcher{}, jobs, t.TempDir(), nil)
+	for _, path := range []string{"/library", "/library/series/series1", "/library/1"} {
+		response := getPage(handler, path)
+		if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), `action="/library/delete/confirm"`) {
+			t.Fatalf("%s: status=%d body=%s", path, response.Code, response.Body.String())
+		}
+	}
+	if body := getPage(handler, "/library/1").Body.String(); strings.Contains(body, "hx-confirm") {
+		t.Fatal("再生ページにhx-confirmが残っている")
+	}
+	if got := postForm(handler, "/library/1/delete", nil).Code; got != http.StatusNotFound && got != http.StatusMethodNotAllowed {
+		t.Fatalf("旧経路 status=%d", got)
+	}
+}

internal/web/natural_order.go

@@ -0,0 +1,101 @@
+package web
+
+import (
+	"sort"
+	"strings"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+func sortJobsNaturally(jobs []store.Job) {
+	sort.SliceStable(jobs, func(i, j int) bool {
+		if comparison := compareNaturalTitle(jobs[i].Title, jobs[j].Title); comparison != 0 {
+			return comparison < 0
+		}
+		left, right := jobs[i].FinishedAt, jobs[j].FinishedAt
+		if left == nil || right == nil {
+			if left != right {
+				return left == nil
+			}
+		} else if !left.Equal(*right) {
+			return left.Before(*right)
+		}
+		return jobs[i].ID < jobs[j].ID
+	})
+}
+
+func compareNaturalTitle(left, right string) int {
+	a, b := []rune(left), []rune(right)
+	ai, bi := 0, 0
+	for ai < len(a) && bi < len(b) {
+		_, aIsDigit := decimalDigit(a[ai])
+		_, bIsDigit := decimalDigit(b[bi])
+		if aIsDigit && bIsDigit {
+			var an, bn strings.Builder
+			for ai < len(a) {
+				digit, ok := decimalDigit(a[ai])
+				if !ok {
+					break
+				}
+				an.WriteByte(byte('0' + digit))
+				ai++
+			}
+			for bi < len(b) {
+				digit, ok := decimalDigit(b[bi])
+				if !ok {
+					break
+				}
+				bn.WriteByte(byte('0' + digit))
+				bi++
+			}
+			if comparison := compareDecimal(an.String(), bn.String()); comparison != 0 {
+				return comparison
+			}
+			continue
+		}
+		if a[ai] < b[bi] {
+			return -1
+		}
+		if a[ai] > b[bi] {
+			return 1
+		}
+		ai++
+		bi++
+	}
+	if ai == len(a) && bi < len(b) {
+		return -1
+	}
+	if bi == len(b) && ai < len(a) {
+		return 1
+	}
+	return 0
+}
+
+func decimalDigit(r rune) (int, bool) {
+	switch {
+	case '0' <= r && r <= '9':
+		return int(r - '0'), true
+	case '０' <= r && r <= '９':
+		return int(r - '０'), true
+	default:
+		return 0, false
+	}
+}
+
+func compareDecimal(left, right string) int {
+	left = strings.TrimLeft(left, "0")
+	right = strings.TrimLeft(right, "0")
+	if left == "" {
+		left = "0"
+	}
+	if right == "" {
+		right = "0"
+	}
+	if len(left) < len(right) {
+		return -1
+	}
+	if len(left) > len(right) {
+		return 1
+	}
+	return strings.Compare(left, right)
+}

internal/web/natural_order_test.go

@@ -0,0 +1,60 @@
+package web
+
+import (
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+func TestSortJobsNaturally(t *testing.T) {
+	base := time.Date(2026, 10, 10, 0, 0, 0, 0, time.UTC)
+	jobs := []store.Job{
+		{ID: 8, Title: "第10話", FinishedAt: timePointer(base)},
+		{ID: 7, Title: "第２話", FinishedAt: timePointer(base)},
+		{ID: 6, Title: "#10", FinishedAt: timePointer(base)},
+		{ID: 5, Title: "#9", FinishedAt: timePointer(base)},
+		{ID: 4, Title: "第2話", FinishedAt: timePointer(base.Add(time.Hour))},
+		{ID: 3, Title: "第２話", FinishedAt: timePointer(base.Add(-time.Hour))},
+		{ID: 2, Title: "第02話", FinishedAt: timePointer(base.Add(-time.Hour))},
+		{ID: 1, Title: "おまけ", FinishedAt: timePointer(base)},
+	}
+	sortJobsNaturally(jobs)
+	got := make([]int64, len(jobs))
+	for i := range jobs {
+		got[i] = jobs[i].ID
+	}
+	want := []int64{5, 6, 1, 2, 3, 7, 4, 8}
+	for i := range want {
+		if got[i] != want[i] {
+			t.Fatalf("自然順=%v want=%v", got, want)
+		}
+	}
+}
+
+func TestNaturalOrderUsesIDAfterEqualTitleAndFinishedAt(t *testing.T) {
+	finished := time.Date(2026, 10, 10, 0, 0, 0, 0, time.UTC)
+	jobs := []store.Job{
+		{ID: 20, Title: "#９", FinishedAt: &finished},
+		{ID: 10, Title: "#9", FinishedAt: &finished},
+	}
+	sortJobsNaturally(jobs)
+	if jobs[0].ID != 10 || jobs[1].ID != 20 {
+		t.Fatalf("同順位のID順: %+v", jobs)
+	}
+}
+
+func TestNaturalOrderTreatsLeadingZerosAsTheSameNumber(t *testing.T) {
+	base := time.Date(2026, 10, 10, 0, 0, 0, 0, time.UTC)
+	jobs := []store.Job{
+		{ID: 30, Title: "数字なし", FinishedAt: timePointer(base.Add(-time.Hour))},
+		{ID: 20, Title: "#09", FinishedAt: timePointer(base)},
+		{ID: 10, Title: "#9", FinishedAt: timePointer(base.Add(time.Hour))},
+	}
+	sortJobsNaturally(jobs)
+	if jobs[0].ID != 20 || jobs[1].ID != 10 || jobs[2].ID != 30 {
+		t.Fatalf("先頭ゼロと数字なしの自然順: %+v", jobs)
+	}
+}
+
+func timePointer(value time.Time) *time.Time { return &value }

internal/web/newer.go

@@ -0,0 +1,240 @@
+package web
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"net/http"
+	"net/url"
+	"regexp"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+const (
+	newerCacheTTL = 10 * time.Minute
+)
+
+var platformTokenPattern = regexp.MustCompile(`(?i)(platform_token=)[^&\s]+`)
+
+type NewerFetcher interface {
+	FetchNewer(context.Context, string) ([]tver.Episode, error)
+	FetchSeries(context.Context, string) (string, error)
+	FetchSeriesEpisodes(context.Context, string) ([]tver.Episode, error)
+}
+
+type cacheEntry struct {
+	episodes  []tver.Episode
+	expiresAt time.Time
+}
+
+type newerOptions struct {
+	genre        string
+	hidePreviews bool
+}
+
+type episodeView struct {
+	ID                 string
+	SeriesID           string
+	SubscriptionAction subscriptionActionView
+	Genre              string
+	Status             string
+	StatusText         string
+	URL                string
+	ThumbnailURL       string
+	SeriesTitle        string
+	Title              string
+	BroadcasterName    string
+	DurationMinutes    int64
+	BroadcastDateLabel string
+	EndAtText          string
+	EndAtISO           string
+}
+
+type newerView struct {
+	Genre        string
+	HidePreviews bool
+	Episodes     []episodeView
+	Failed       bool
+	ErrorText    string
+}
+
+func parseNewerOptions(r *http.Request) (newerOptions, error) {
+	options := newerOptions{genre: "drama", hidePreviews: true}
+	query := r.URL.Query()
+	if values, ok := query["genre"]; ok {
+		options.genre = values[len(values)-1]
+	}
+	if options.genre != "drama" && options.genre != "variety" {
+		return newerOptions{}, fmt.Errorf("invalid genre")
+	}
+	if values, ok := query["hide_previews"]; ok {
+		switch values[len(values)-1] {
+		case "0":
+			options.hidePreviews = false
+		case "1":
+			options.hidePreviews = true
+		default:
+			return newerOptions{}, fmt.Errorf("invalid hide_previews")
+		}
+	}
+	return options, nil
+}
+
+func (options newerOptions) pageURL() string {
+	query := url.Values{}
+	query.Set("genre", options.genre)
+	if options.hidePreviews {
+		query.Set("hide_previews", "1")
+	} else {
+		query.Set("hide_previews", "0")
+	}
+	return "/?" + query.Encode()
+}
+
+func (s *server) home(w http.ResponseWriter, r *http.Request) {
+	options, err := parseNewerOptions(r)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	view := s.newerView(r.Context(), options)
+	s.render(w, "layout", page{Title: "新着", Newer: &view})
+}
+
+func (s *server) newerFragment(w http.ResponseWriter, r *http.Request) {
+	options, err := parseNewerOptions(r)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+	view := s.newerView(r.Context(), options)
+	w.Header().Set("HX-Push-Url", options.pageURL())
+	s.render(w, "newer_results", view)
+}
+
+func (s *server) render(w http.ResponseWriter, name string, value any) {
+	var body bytes.Buffer
+	if err := s.tmpl.ExecuteTemplate(&body, name, value); err != nil {
+		s.logger.Printf("テンプレートの描画に失敗: %v", err)
+		http.Error(w, "template error", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	_, _ = body.WriteTo(w)
+}
+
+func (s *server) newerView(ctx context.Context, options newerOptions) newerView {
+	view := newerView{Genre: options.genre, HidePreviews: options.hidePreviews}
+	episodes, err := s.cachedNewer(ctx, options.genre)
+	if err != nil {
+		s.logger.Printf("TVer の新着取得に失敗（genre=%s）: %s", options.genre, platformTokenPattern.ReplaceAllString(err.Error(), "${1}[REDACTED]"))
+		view.Failed = true
+		view.ErrorText = "新着を取得できませんでした"
+		return view
+	}
+	visible := make([]tver.Episode, 0, len(episodes))
+	for _, episode := range episodes {
+		if options.hidePreviews && episode.Duration <= tver.PreviewMaxSeconds {
+			continue
+		}
+		visible = append(visible, episode)
+	}
+	ids := make([]string, 0, len(visible))
+	for _, episode := range visible {
+		ids = append(ids, episode.ID)
+	}
+	statuses, err := s.jobs.EpisodeStatuses(ctx, ids)
+	if err != nil {
+		s.logger.Printf("新着のジョブ状態取得に失敗: %v", err)
+		view.Failed = true
+		view.ErrorText = "状態を取得できませんでした"
+		return view
+	}
+	seriesIDs := make([]string, 0, len(visible))
+	seenSeries := make(map[string]bool)
+	for _, episode := range visible {
+		if episode.SeriesID != "" && !seenSeries[episode.SeriesID] {
+			seriesIDs = append(seriesIDs, episode.SeriesID)
+			seenSeries[episode.SeriesID] = true
+		}
+	}
+	subscribed, err := s.jobs.SubscribedSeries(ctx, seriesIDs)
+	if err != nil {
+		s.logger.Printf("登録番組の状態取得に失敗: %v", err)
+		view.Failed = true
+		view.ErrorText = "登録番組の状態を取得できませんでした"
+		return view
+	}
+	for _, episode := range visible {
+		endAt := time.Unix(episode.EndAt, 0).In(s.zone)
+		view.Episodes = append(view.Episodes, episodeView{
+			ID:                 episode.ID,
+			SeriesID:           episode.SeriesID,
+			SubscriptionAction: subscriptionActionView{ID: episode.ID, Genre: options.genre, Subscribed: subscribed[episode.SeriesID]},
+			Genre:              options.genre,
+			Status:             statuses[episode.ID],
+			StatusText:         statusText(statuses[episode.ID]),
+			URL:                "https://tver.jp/episodes/" + url.PathEscape(episode.ID),
+			ThumbnailURL:       "https://statics.tver.jp" + episode.ThumbnailPath,
+			SeriesTitle:        episode.SeriesTitle,
+			Title:              episode.Title,
+			BroadcasterName:    episode.BroadcasterName,
+			DurationMinutes:    durationMinutes(episode.Duration),
+			BroadcastDateLabel: episode.BroadcastDateLabel,
+			EndAtText:          endAt.Format("2006-01-02 15:04 MST"),
+			EndAtISO:           endAt.Format(time.RFC3339),
+		})
+	}
+	return view
+}
+
+func (s *server) cachedEpisode(genre, id string) (tver.Episode, bool) {
+	s.cacheMu.Lock()
+	defer s.cacheMu.Unlock()
+	entry, ok := s.cache[genre]
+	if !ok || !s.now().Before(entry.expiresAt) {
+		return tver.Episode{}, false
+	}
+	for _, ep := range entry.episodes {
+		if ep.ID == id {
+			return ep, true
+		}
+	}
+	return tver.Episode{}, false
+}
+
+func storeEpisode(ep tver.Episode) store.Episode {
+	var endAt *time.Time
+	if ep.EndAt > 0 {
+		end := time.Unix(ep.EndAt, 0)
+		endAt = &end
+	}
+	return store.Episode{ID: ep.ID, SeriesID: ep.SeriesID, SeriesTitle: ep.SeriesTitle,
+		Title: ep.Title, BroadcasterName: ep.BroadcasterName, DurationSeconds: int(ep.Duration),
+		EndAt: endAt, ThumbnailPath: ep.ThumbnailPath}
+}
+
+func durationMinutes(seconds int64) int64 {
+	minutes := seconds / 60
+	if seconds%60 != 0 {
+		minutes++
+	}
+	return max(1, minutes)
+}
+
+func (s *server) cachedNewer(ctx context.Context, genre string) ([]tver.Episode, error) {
+	s.cacheMu.Lock()
+	defer s.cacheMu.Unlock()
+	if cached, ok := s.cache[genre]; ok && s.now().Before(cached.expiresAt) {
+		return cached.episodes, nil
+	}
+	episodes, err := s.fetcher.FetchNewer(ctx, genre)
+	if err != nil {
+		return nil, err
+	}
+	s.cache[genre] = cacheEntry{episodes: episodes, expiresAt: s.now().Add(newerCacheTTL)}
+	return episodes, nil
+}

internal/web/newer_test.go

@@ -0,0 +1,271 @@
+package web
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+type fakeFetcher struct {
+	episodes         []tver.Episode
+	episodesByGenre  map[string][]tver.Episode
+	err              error
+	calls            []string
+	seriesEpisodes   []tver.Episode
+	seriesErr        error
+	seriesCalls      []string
+	seriesTitle      string
+	seriesTitleErr   error
+	seriesTitleCalls []string
+}
+
+func (f *fakeFetcher) FetchSeries(_ context.Context, seriesID string) (string, error) {
+	f.seriesTitleCalls = append(f.seriesTitleCalls, seriesID)
+	return f.seriesTitle, f.seriesTitleErr
+}
+
+func (f *fakeFetcher) FetchNewer(_ context.Context, genre string) ([]tver.Episode, error) {
+	f.calls = append(f.calls, genre)
+	if f.episodesByGenre != nil {
+		return f.episodesByGenre[genre], f.err
+	}
+	return f.episodes, f.err
+}
+
+func (f *fakeFetcher) FetchSeriesEpisodes(_ context.Context, seriesID string) ([]tver.Episode, error) {
+	f.seriesCalls = append(f.seriesCalls, seriesID)
+	return f.seriesEpisodes, f.seriesErr
+}
+
+func newTestHandler(fetcher *fakeFetcher, now func() time.Time) http.Handler {
+	return newTestHandlerWithStore(fetcher, &fakeJobStore{}, now)
+}
+
+func newTestHandlerWithStore(fetcher *fakeFetcher, jobs *fakeJobStore, now func() time.Time) http.Handler {
+	return newTestHandlerWithVideoDir(fetcher, jobs, "", now)
+}
+
+func newTestHandlerWithVideoDir(fetcher *fakeFetcher, jobs *fakeJobStore, videoDir string, now func() time.Time) http.Handler {
+	if now == nil {
+		now = func() time.Time { return time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC) }
+	}
+	return NewHandler(fetcher, jobs, videoDir, now, log.New(io.Discard, "", 0))
+}
+
+func getPage(handler http.Handler, path string) *httptest.ResponseRecorder {
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, httptest.NewRequest(http.MethodGet, path, nil))
+	return response
+}
+
+func TestNewerPageShowsEpisodeFieldsAndJST(t *testing.T) {
+	endAt := time.Date(2026, 10, 3, 21, 34, 0, 0, time.UTC).Unix()
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{
+		ID: "ep123", SeriesTitle: "番組名", Title: "第1話", BroadcasterName: "放送局",
+		Duration: 2712, EndAt: endAt, ThumbnailPath: "/images/ep123.jpg",
+		BroadcastDateLabel: "10月3日放送分",
+	}}}
+	response := getPage(newTestHandler(fetcher, nil), "/")
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d", response.Code)
+	}
+	body := response.Body.String()
+	for _, want := range []string{
+		"番組名", "第1話", "放送局", "10月3日放送分",
+		"長さ: 46分",
+		"https://statics.tver.jp/images/ep123.jpg",
+		"https://tver.jp/episodes/ep123",
+		"2026-10-04 06:34 JST", `datetime="2026-10-04T06:34:00+09:00"`,
+		`value="drama" selected`, `name="hide_previews" value="1" checked`,
+		`hx-get="/newer"`, `hx-target="#newer-results"`,
+	} {
+		if !strings.Contains(body, want) {
+			t.Errorf("page missing %q", want)
+		}
+	}
+	if len(fetcher.calls) != 1 || fetcher.calls[0] != "drama" {
+		t.Errorf("calls = %v", fetcher.calls)
+	}
+}
+
+func TestDurationMinutesRoundsUp(t *testing.T) {
+	for _, tt := range []struct {
+		seconds int64
+		minutes int64
+	}{
+		{0, 1}, {1, 1}, {59, 1}, {60, 1}, {61, 2}, {2712, 46},
+	} {
+		if got := durationMinutes(tt.seconds); got != tt.minutes {
+			t.Errorf("%d seconds = %d minutes; want %d", tt.seconds, got, tt.minutes)
+		}
+	}
+}
+
+func TestNewerFragmentUpdatesURLAndFullPageRestoresState(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "variety-1", Duration: 200}}}
+	handler := newTestHandler(fetcher, nil)
+	response := getPage(handler, "/newer?genre=variety&hide_previews=0")
+	if response.Code != http.StatusOK {
+		t.Fatalf("fragment status = %d", response.Code)
+	}
+	if got := response.Header().Get("HX-Push-Url"); got != "/?genre=variety&hide_previews=0" {
+		t.Errorf("HX-Push-Url = %q", got)
+	}
+	if body := response.Body.String(); !strings.Contains(body, `id="newer-results"`) || !strings.Contains(body, "variety-1") || strings.Contains(body, "<html") {
+		t.Errorf("not an episode fragment: %s", body)
+	}
+	reload := getPage(handler, "/?genre=variety&hide_previews=0")
+	if reload.Code != http.StatusOK || !strings.Contains(reload.Body.String(), `value="variety" selected`) || strings.Contains(reload.Body.String(), `value="1" checked`) || !strings.Contains(reload.Body.String(), "variety-1") {
+		t.Errorf("reload did not restore state: status=%d body=%s", reload.Code, reload.Body.String())
+	}
+	if len(fetcher.calls) != 1 || fetcher.calls[0] != "variety" {
+		t.Errorf("calls = %v", fetcher.calls)
+	}
+}
+
+func TestNewerInvalidGenreReturns400WithoutFetch(t *testing.T) {
+	fetcher := &fakeFetcher{}
+	handler := newTestHandler(fetcher, nil)
+	for _, path := range []string{"/?genre=news", "/newer?genre=news", "/?genre=", "/?hide_previews=invalid", "/newer?hide_previews="} {
+		response := getPage(handler, path)
+		if response.Code != http.StatusBadRequest {
+			t.Errorf("%s: status = %d", path, response.Code)
+		}
+	}
+	if len(fetcher.calls) != 0 {
+		t.Errorf("unexpected fetch calls: %v", fetcher.calls)
+	}
+}
+
+func TestPreviewFilterBoundaryAndToggle(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{
+		{ID: "preview-180", Duration: 180},
+		{ID: "episode-181", Duration: 181},
+	}}
+	handler := newTestHandler(fetcher, nil)
+	hidden := getPage(handler, "/")
+	if strings.Contains(hidden.Body.String(), "preview-180") || !strings.Contains(hidden.Body.String(), "episode-181") {
+		t.Errorf("default filter: %s", hidden.Body.String())
+	}
+	shown := getPage(handler, "/newer?genre=drama&hide_previews=0")
+	if !strings.Contains(shown.Body.String(), "preview-180") || !strings.Contains(shown.Body.String(), "episode-181") {
+		t.Errorf("show previews: %s", shown.Body.String())
+	}
+	checked := getPage(handler, "/newer?genre=drama&hide_previews=0&hide_previews=1")
+	if strings.Contains(checked.Body.String(), "preview-180") || checked.Header().Get("HX-Push-Url") != "/?genre=drama&hide_previews=1" {
+		t.Errorf("checked form state: %s", checked.Body.String())
+	}
+	if len(fetcher.calls) != 1 {
+		t.Errorf("filter caused %d TVer fetches; want 1", len(fetcher.calls))
+	}
+}
+
+func TestNewerCacheExpiresPerGenre(t *testing.T) {
+	now := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "ep", Duration: 200}}}
+	handler := newTestHandler(fetcher, func() time.Time { return now })
+	getPage(handler, "/")
+	now = now.Add(9*time.Minute + 59*time.Second)
+	getPage(handler, "/?genre=drama&hide_previews=0")
+	getPage(handler, "/?genre=variety")
+	if got := strings.Join(fetcher.calls, ","); got != "drama,variety" {
+		t.Fatalf("before expiry calls = %q", got)
+	}
+	now = now.Add(2 * time.Second)
+	getPage(handler, "/")
+	getPage(handler, "/?genre=variety")
+	if got := strings.Join(fetcher.calls, ","); got != "drama,variety,drama" {
+		t.Errorf("after expiry calls = %q", got)
+	}
+}
+
+func TestNewerCacheKeepsGenreResultsSeparateAndExpiresAtTenMinutes(t *testing.T) {
+	now := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	fetcher := &fakeFetcher{episodesByGenre: map[string][]tver.Episode{
+		"drama":   {{ID: "drama-only", Duration: 200}},
+		"variety": {{ID: "variety-only", Duration: 200}},
+	}}
+	handler := newTestHandler(fetcher, func() time.Time { return now })
+	checkPage := func(path, wantID, absentID string) {
+		t.Helper()
+		response := getPage(handler, path)
+		body := response.Body.String()
+		if response.Code != http.StatusOK || !strings.Contains(body, "/episodes/"+wantID) || strings.Contains(body, "/episodes/"+absentID) {
+			t.Errorf("%s at %s: status=%d, wrong genre contents: %s", path, now.Format(time.RFC3339), response.Code, body)
+		}
+	}
+	checkCalls := func(want string) {
+		t.Helper()
+		if got := strings.Join(fetcher.calls, ","); got != want {
+			t.Errorf("fetch calls = %q; want %q", got, want)
+		}
+	}
+	checkPage("/", "drama-only", "variety-only")
+	now = now.Add(5 * time.Minute)
+	checkPage("/?genre=variety", "variety-only", "drama-only")
+	now = now.Add(4*time.Minute + 59*time.Second)
+	checkPage("/", "drama-only", "variety-only")
+	checkCalls("drama,variety")
+	now = now.Add(time.Second)
+	checkPage("/", "drama-only", "variety-only")
+	checkPage("/?genre=variety", "variety-only", "drama-only")
+	checkCalls("drama,variety,drama")
+	now = now.Add(5 * time.Minute)
+	checkPage("/?genre=variety", "variety-only", "drama-only")
+	checkCalls("drama,variety,drama,variety")
+}
+
+func TestNewerPageEscapesUntrustedEpisodeFields(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{
+		ID: "safe-id", SeriesTitle: `<script>alert(1)</script>`, Title: `<b>title</b>`,
+		BroadcasterName: `<img src=x onerror=alert(1)>`, BroadcastDateLabel: `<svg onload=alert(1)>`,
+		ThumbnailPath: `/image.jpg" onerror="alert(1)`, Duration: 200,
+	}}}
+	response := getPage(newTestHandler(fetcher, nil), "/")
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d", response.Code)
+	}
+	body := response.Body.String()
+	for _, unsafe := range []string{"<script>alert(1)</script>", "<b>title</b>", "<img src=x", "<svg onload", `onerror="alert(1)"`} {
+		if strings.Contains(body, unsafe) {
+			t.Errorf("untrusted markup was not escaped: %q", unsafe)
+		}
+	}
+	for _, escaped := range []string{"&lt;script&gt;", "&lt;b&gt;title&lt;/b&gt;", "&lt;img src=x onerror=alert(1)&gt;", "&lt;svg onload=alert(1)&gt;"} {
+		if !strings.Contains(body, escaped) {
+			t.Errorf("escaped field missing: %q", escaped)
+		}
+	}
+}
+
+func TestNewerFailureShowsFriendlyMessageAndRedactsToken(t *testing.T) {
+	fetcher := &fakeFetcher{err: errors.New("GET https://platform-api.tver.jp/?platform_token=secret-123&x=1: upstream unavailable")}
+	var logs bytes.Buffer
+	handler := NewHandler(fetcher, &fakeJobStore{}, "", time.Now, log.New(&logs, "", 0))
+	response := getPage(handler, "/")
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "新着を取得できませんでした") {
+		t.Errorf("error page: status=%d body=%s", response.Code, response.Body.String())
+	}
+	if strings.Contains(response.Body.String(), "upstream") || strings.Contains(response.Body.String(), "secret-123") {
+		t.Errorf("error detail leaked into page: %s", response.Body.String())
+	}
+	fragment := getPage(handler, "/newer?genre=variety&hide_previews=0")
+	if fragment.Code != http.StatusOK || !strings.Contains(fragment.Body.String(), `id="newer-results"`) || !strings.Contains(fragment.Body.String(), "新着を取得できませんでした") || strings.Contains(fragment.Body.String(), "<html") {
+		t.Errorf("error fragment: status=%d body=%s", fragment.Code, fragment.Body.String())
+	}
+	if fragment.Header().Get("HX-Push-Url") != "/?genre=variety&hide_previews=0" || strings.Contains(fragment.Body.String(), "secret-123") {
+		t.Errorf("error fragment URL or token leak: header=%q body=%s", fragment.Header().Get("HX-Push-Url"), fragment.Body.String())
+	}
+	if !strings.Contains(logs.String(), "upstream unavailable") || strings.Contains(logs.String(), "secret-123") {
+		t.Errorf("log detail or token redaction failed: %s", logs.String())
+	}
+}

internal/web/queue.go

@@ -0,0 +1,194 @@
+package web
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"github.com/jackc/pgx/v5"
+)
+
+const queueListLimit = 50
+
+type queueJobView struct {
+	store.Job
+	SourceText, CreatedAtText, PhaseText string
+	PercentText, SpeedText, ETAText      string
+	FragmentText, ErrorKindText          string
+}
+
+type queueView struct {
+	Running, Queued, Failed, Canceled, Succeeded []queueJobView
+	Poll                                         bool
+}
+
+func (s *server) queuePage(w http.ResponseWriter, r *http.Request) {
+	view, err := s.loadQueue(r.Context())
+	if err != nil {
+		s.logger.Printf("待ち行列の取得に失敗: %v", err)
+		http.Error(w, "待ち行列を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	s.render(w, "layout", page{Title: "待ち行列", Queue: &view})
+}
+
+func (s *server) queueFragment(w http.ResponseWriter, r *http.Request) {
+	view, err := s.loadQueue(r.Context())
+	if err != nil {
+		s.logger.Printf("待ち行列の取得に失敗: %v", err)
+		http.Error(w, "待ち行列を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	s.render(w, "queue_list", view)
+}
+
+func (s *server) loadQueue(ctx context.Context) (queueView, error) {
+	var view queueView
+	for _, item := range []struct {
+		status string
+		assign func([]queueJobView)
+	}{
+		{"running", func(j []queueJobView) { view.Running = j }},
+		{"queued", func(j []queueJobView) { view.Queued = j }},
+		{"failed", func(j []queueJobView) { view.Failed = j }},
+		{"canceled", func(j []queueJobView) { view.Canceled = j }},
+		{"succeeded", func(j []queueJobView) { view.Succeeded = j }},
+	} {
+		jobs, err := s.jobs.ListJobs(ctx, item.status, queueListLimit)
+		if err != nil {
+			return queueView{}, err
+		}
+		views := make([]queueJobView, 0, len(jobs))
+		for _, job := range jobs {
+			views = append(views, s.queueJob(job))
+		}
+		item.assign(views)
+	}
+	view.Poll = len(view.Running) > 0 || len(view.Queued) > 0
+	return view, nil
+}
+
+func (s *server) queueJob(job store.Job) queueJobView {
+	view := queueJobView{Job: job, CreatedAtText: job.CreatedAt.In(s.zone).Format("2006-01-02 15:04 MST")}
+	if job.Source == "subscription" {
+		view.SourceText = "自動"
+	} else {
+		view.SourceText = "手動"
+	}
+	if job.Phase != nil {
+		switch *job.Phase {
+		case "video":
+			view.PhaseText = "映像"
+		case "audio":
+			view.PhaseText = "音声"
+		case "merging":
+			view.PhaseText = "結合"
+		case "moving":
+			view.PhaseText = "移動"
+		}
+	}
+	if job.DownloadedBytes != nil && job.TotalBytes != nil && *job.TotalBytes > 0 {
+		percent := 100 * float64(*job.DownloadedBytes) / float64(*job.TotalBytes)
+		percent = max(0, min(percent, 100))
+		if job.TotalIsEstimate {
+			view.PercentText = fmt.Sprintf("約%.0f%%", percent)
+		} else {
+			view.PercentText = fmt.Sprintf("%.0f%%", percent)
+		}
+	}
+	if job.SpeedBPS != nil && *job.SpeedBPS > 0 {
+		view.SpeedText = formatBytes(*job.SpeedBPS) + "/秒"
+	}
+	if job.ETASeconds != nil && *job.ETASeconds >= 0 {
+		seconds := int64(*job.ETASeconds)
+		view.ETAText = fmt.Sprintf("残り%d分%d秒", seconds/60, seconds%60)
+	}
+	if job.FragmentIndex != nil && job.FragmentCount != nil && *job.FragmentCount > 0 {
+		view.FragmentText = fmt.Sprintf("断片 %d/%d", *job.FragmentIndex, *job.FragmentCount)
+	}
+	if job.ErrorKind != nil {
+		view.ErrorKindText = errorKindText(*job.ErrorKind)
+	}
+	return view
+}
+
+func formatBytes(n float64) string {
+	for _, unit := range []string{"B", "KiB", "MiB", "GiB"} {
+		if n < 1024 || unit == "GiB" {
+			return fmt.Sprintf("%.1f %s", n, unit)
+		}
+		n /= 1024
+	}
+	return ""
+}
+
+func errorKindText(kind string) string {
+	switch kind {
+	case "drm":
+		return "DRM のため取得不可"
+	case "geo":
+		return "地域制限"
+	case "network":
+		return "ネットワーク"
+	case "unavailable":
+		return "配信終了・存在しない"
+	case "extract":
+		return "抽出失敗"
+	case "invalid_output":
+		return "出力形式の不正"
+	default:
+		return "不明"
+	}
+}
+
+func (s *server) retryJob(w http.ResponseWriter, r *http.Request) {
+	s.queueMutation(w, r, s.jobs.Retry)
+}
+
+func (s *server) cancelJob(w http.ResponseWriter, r *http.Request) {
+	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
+	if err != nil || id <= 0 {
+		http.Error(w, "ジョブ ID が不正です", http.StatusBadRequest)
+		return
+	}
+	job, err := s.jobs.GetJob(r.Context(), id)
+	if errors.Is(err, pgx.ErrNoRows) {
+		http.Error(w, "ジョブが見つかりません", http.StatusNotFound)
+		return
+	}
+	if err != nil {
+		s.logger.Printf("ジョブ状態の取得に失敗: %v", err)
+		http.Error(w, "操作できませんでした", http.StatusInternalServerError)
+		return
+	}
+	if job.Status != "queued" && job.Status != "running" {
+		http.Error(w, "待機中またはダウンロード中のジョブだけ取り消せます", http.StatusConflict)
+		return
+	}
+	s.queueMutation(w, r, s.jobs.Cancel)
+}
+
+func (s *server) queueMutation(w http.ResponseWriter, r *http.Request, change func(context.Context, int64) error) {
+	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
+	if err != nil || id <= 0 {
+		http.Error(w, "ジョブ ID が不正です", http.StatusBadRequest)
+		return
+	}
+	if err := change(r.Context(), id); err != nil {
+		if errors.Is(err, store.ErrInvalidTransition) {
+			http.Error(w, "操作できる状態ではありません", http.StatusConflict)
+		} else {
+			s.logger.Printf("待ち行列の操作に失敗: %v", err)
+			http.Error(w, "操作できませんでした", http.StatusInternalServerError)
+		}
+		return
+	}
+	if r.Header.Get("HX-Request") != "true" {
+		http.Redirect(w, r, "/queue", http.StatusSeeOther)
+		return
+	}
+	s.queueFragment(w, r)
+}

internal/web/queue_test.go

@@ -0,0 +1,350 @@
+package web
+
+import (
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"regexp"
+	"slices"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+func postForm(handler http.Handler, path string, values url.Values) *httptest.ResponseRecorder {
+	r := httptest.NewRequest(http.MethodPost, path, strings.NewReader(values.Encode()))
+	r.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	r.Header.Set("HX-Request", "true")
+	w := httptest.NewRecorder()
+	handler.ServeHTTP(w, r)
+	return w
+}
+
+func TestEnqueueUsesCachedEpisodeAndDuplicateStatus(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "ep1", SeriesID: "series1", SeriesTitle: "正しい番組", Title: "正しい回", BroadcasterName: "正しい局", Duration: 1234, EndAt: 1791061200, ThumbnailPath: "/correct.jpg"}}}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	getPage(handler, "/")
+	if jobs.statusCalls != 1 || len(jobs.statusIDs) != 1 || jobs.statusIDs[0] != "ep1" {
+		t.Fatalf("状態の一括取得: calls=%d ids=%v", jobs.statusCalls, jobs.statusIDs)
+	}
+	values := url.Values{"genre": {"drama"}, "episode_id": {"ep1"}, "series_title": {"偽番組"}, "title": {"偽回"}}
+	response := postForm(handler, "/episodes/enqueue", values)
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "待機中") || !strings.Contains(response.Body.String(), `class="episode-action"`) || strings.Contains(response.Body.String(), "<html") || strings.Contains(response.Body.String(), "episode-card") {
+		t.Fatalf("登録応答: %d %s", response.Code, response.Body.String())
+	}
+	if jobs.lastEpisode.SeriesTitle != "正しい番組" || jobs.lastEpisode.Title != "正しい回" || jobs.lastEpisode.BroadcasterName != "正しい局" || jobs.lastEpisode.DurationSeconds != 1234 || jobs.lastEpisode.ThumbnailPath != "/correct.jpg" || jobs.lastEpisode.EndAt == nil {
+		t.Fatalf("キャッシュ外の情報を使用: %+v", jobs.lastEpisode)
+	}
+	if len(fetcher.calls) != 1 {
+		t.Fatalf("POST が TVer に再問い合わせ: %v", fetcher.calls)
+	}
+	duplicate := postForm(handler, "/episodes/enqueue", values)
+	if duplicate.Code != http.StatusOK || !strings.Contains(duplicate.Body.String(), "待機中") || len(jobs.jobs) != 1 {
+		t.Fatalf("二重登録: %d %s jobs=%d", duplicate.Code, duplicate.Body.String(), len(jobs.jobs))
+	}
+	page := getPage(handler, "/")
+	if !strings.Contains(page.Body.String(), "待機中") || strings.Contains(page.Body.String(), ">ダウンロード</button>") {
+		t.Fatalf("登録後の一覧: %s", page.Body.String())
+	}
+}
+
+func TestEnqueueRejectsInvalidOrExpiredCache(t *testing.T) {
+	now := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "ep1", Duration: 200}}}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, func() time.Time { return now })
+	valid := url.Values{"genre": {"drama"}, "episode_id": {"ep1"}}
+	if got := postForm(handler, "/episodes/enqueue", valid).Code; got != http.StatusNotFound {
+		t.Fatalf("未取得キャッシュ: %d", got)
+	}
+	getPage(handler, "/")
+	for _, values := range []url.Values{
+		{"genre": {"news"}, "episode_id": {"ep1"}},
+		{"genre": {"drama"}},
+	} {
+		if got := postForm(handler, "/episodes/enqueue", values).Code; got != http.StatusBadRequest {
+			t.Errorf("不正なフォーム: %d", got)
+		}
+	}
+	if got := postForm(handler, "/episodes/enqueue", url.Values{"genre": {"drama"}, "episode_id": {"unknown"}}).Code; got != http.StatusNotFound {
+		t.Fatalf("同じジャンルの未収録 ID: %d", got)
+	}
+	if got := postForm(handler, "/episodes/enqueue", url.Values{"genre": {"variety"}, "episode_id": {"ep1"}}).Code; got != http.StatusNotFound {
+		t.Fatalf("別ジャンルのキャッシュ: %d", got)
+	}
+	now = now.Add(newerCacheTTL)
+	if got := postForm(handler, "/episodes/enqueue", valid).Code; got != http.StatusNotFound {
+		t.Fatalf("期限切れキャッシュ: %d", got)
+	}
+	if jobs.enqueueCalls != 0 || len(fetcher.calls) != 1 {
+		t.Fatalf("無効な入力で登録・再取得: enqueue=%d fetch=%v", jobs.enqueueCalls, fetcher.calls)
+	}
+}
+
+func TestEnqueueUsesSelectedGenreCacheForSameEpisodeID(t *testing.T) {
+	fetcher := &fakeFetcher{episodesByGenre: map[string][]tver.Episode{
+		"drama":   {{ID: "shared", SeriesTitle: "ドラマの番組", Duration: 200}},
+		"variety": {{ID: "shared", SeriesTitle: "バラエティの番組", Duration: 200}},
+	}}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	getPage(handler, "/")
+	getPage(handler, "/?genre=variety")
+	response := postForm(handler, "/episodes/enqueue", url.Values{
+		"genre": {"variety"}, "episode_id": {"shared"}, "series_title": {"偽タイトル"},
+	})
+	if response.Code != http.StatusOK || jobs.lastEpisode.SeriesTitle != "バラエティの番組" || jobs.enqueueCalls != 1 || !slices.Equal(fetcher.calls, []string{"drama", "variety"}) {
+		t.Fatalf("選択ジャンルのキャッシュ: status=%d episode=%+v calls=%v", response.Code, jobs.lastEpisode, fetcher.calls)
+	}
+}
+
+func TestNewerStatusesAndRetry(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "failed", Duration: 200}, {ID: "canceled", Duration: 200}, {ID: "running", Duration: 200}, {ID: "done", Duration: 200}}}
+	jobs := &fakeJobStore{jobs: map[string]store.Job{
+		"failed": {ID: 1, Status: "failed"}, "canceled": {ID: 2, Status: "canceled"},
+		"running": {ID: 3, Status: "running"}, "done": {ID: 4, Status: "succeeded"},
+	}}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	body := getPage(handler, "/").Body.String()
+	for _, want := range []string{"失敗", "取り消し", "ダウンロード中", "完了"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("状態表示がない: %s", want)
+		}
+	}
+	if got := strings.Count(body, ">再試行</button>"); got != 2 {
+		t.Fatalf("再試行ボタン数: %d", got)
+	}
+	response := postForm(handler, "/episodes/retry", url.Values{"genre": {"drama"}, "episode_id": {"failed"}})
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "待機中") || jobs.jobs["failed"].Status != "queued" {
+		t.Fatalf("新着から再試行: %d %s", response.Code, response.Body.String())
+	}
+	if got := postForm(handler, "/episodes/retry", url.Values{"genre": {"drama"}, "episode_id": {"running"}}).Code; got != http.StatusConflict {
+		t.Fatalf("実行中の再試行: %d", got)
+	}
+	if got := postForm(handler, "/episodes/retry", url.Values{"genre": {"drama"}, "episode_id": {"missing"}}).Code; got != http.StatusNotFound {
+		t.Fatalf("キャッシュにない ID の再試行: %d", got)
+	}
+}
+
+func TestQueueGroupsProgressAndPolling(t *testing.T) {
+	phase, errorKind, errorMessage := "video", "drm", `<script>alert(1)</script>`
+	downloaded, total := int64(25), int64(100)
+	speed, eta := float64(2048), float64(63)
+	index, count := int32(2), int32(10)
+	created := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	jobs := &fakeJobStore{jobs: map[string]store.Job{
+		"running":  {ID: 1, Status: "running", Source: "subscription", SeriesTitle: "番組A", Title: "第1話", BroadcasterName: "局A", CreatedAt: created, Phase: &phase, DownloadedBytes: &downloaded, TotalBytes: &total, TotalIsEstimate: true, SpeedBPS: &speed, ETASeconds: &eta, FragmentIndex: &index, FragmentCount: &count},
+		"queued":   {ID: 2, Status: "queued", Source: "manual", SeriesTitle: "番組B", CreatedAt: created},
+		"failed":   {ID: 3, Status: "failed", ErrorKind: &errorKind, ErrorMessage: &errorMessage, CreatedAt: created},
+		"canceled": {ID: 4, Status: "canceled", CreatedAt: created},
+		"done":     {ID: 5, Status: "succeeded", CreatedAt: created},
+	}}
+	handler := newTestHandlerWithStore(&fakeFetcher{}, jobs, nil)
+	response := getPage(handler, "/queue")
+	if response.Code != http.StatusOK {
+		t.Fatalf("待ち行列: %d", response.Code)
+	}
+	body := response.Body.String()
+	for _, want := range []string{"ダウンロード中", "待機中", "失敗", "取り消し", "完了（直近50件）", "番組A", "第1話", "局A", "自動", "手動", "2026-10-03 09:00 JST", "映像", "約25%", "2.0 KiB/秒", "残り1分3秒", "断片 2/10", "DRM のため取得不可", "<details>", "&lt;script&gt;", `hx-get="/queue/list"`, `hx-trigger="every 5s"`} {
+		if !strings.Contains(body, want) {
+			t.Errorf("待ち行列に %q がない", want)
+		}
+	}
+	if strings.Contains(body, errorMessage) || !strings.Contains(body, `action="/jobs/1/cancel"`) || strings.Contains(body, "全体") {
+		t.Errorf("不正な詳細・操作・全体進捗: %s", body)
+	}
+	fragment := getPage(handler, "/queue/list")
+	if fragment.Code != http.StatusOK || strings.Contains(fragment.Body.String(), "<html") || !strings.Contains(fragment.Body.String(), `id="queue-list"`) {
+		t.Errorf("待ち行列断片: %d %s", fragment.Code, fragment.Body.String())
+	}
+}
+
+func TestQueueJobsAppearInCorrectSectionsWithLimit(t *testing.T) {
+	statuses := []string{"running", "queued", "failed", "canceled", "succeeded"}
+	labels := []string{"ダウンロード中", "待機中", "失敗", "取り消し", "完了"}
+	jobs := &fakeJobStore{jobs: make(map[string]store.Job)}
+	for i, status := range statuses {
+		jobs.jobs[status] = store.Job{ID: int64(i + 1), Status: status, SeriesTitle: "番組-" + status}
+	}
+	response := getPage(newTestHandlerWithStore(&fakeFetcher{}, jobs, nil), "/queue")
+	if response.Code != http.StatusOK {
+		t.Fatalf("待ち行列: %d", response.Code)
+	}
+	if !slices.Equal(jobs.listStatuses, statuses) {
+		t.Errorf("状態別取得: %v", jobs.listStatuses)
+	}
+	if !slices.Equal(jobs.listLimits, []int{50, 50, 50, 50, 50}) {
+		t.Errorf("状態ごとの取得上限: %v", jobs.listLimits)
+	}
+	for i, label := range labels {
+		section := regexp.MustCompile(`(?s)<section aria-label="` + label + `">(.*?)</section>`).FindStringSubmatch(response.Body.String())
+		if len(section) != 2 || !strings.Contains(section[1], "番組-"+statuses[i]) {
+			t.Errorf("%s に %s がない: %v", label, statuses[i], section)
+			continue
+		}
+		for j, other := range statuses {
+			if j != i && strings.Contains(section[1], "番組-"+other) {
+				t.Errorf("%s に %s が混入", label, other)
+			}
+		}
+		cancelAction := `action="/jobs/` + string(rune('1'+i)) + `/cancel"`
+		retryAction := `action="/jobs/` + string(rune('1'+i)) + `/retry"`
+		switch statuses[i] {
+		case "running", "queued":
+			if !strings.Contains(section[1], cancelAction) || strings.Contains(section[1], retryAction) {
+				t.Errorf("%s の操作が不正: %s", statuses[i], section[1])
+			}
+		case "failed", "canceled":
+			if !strings.Contains(section[1], retryAction) || strings.Contains(section[1], cancelAction) {
+				t.Errorf("%s の操作が不正: %s", statuses[i], section[1])
+			}
+		default:
+			if strings.Contains(section[1], "/cancel") || strings.Contains(section[1], "/retry") {
+				t.Errorf("%s に操作がある: %s", statuses[i], section[1])
+			}
+		}
+	}
+}
+
+func TestQueueEscapesEpisodeFields(t *testing.T) {
+	attack := `<script>alert(1)</script>`
+	message := `<img src=x onerror=alert(1)>`
+	kind := "extract"
+	jobs := &fakeJobStore{jobs: map[string]store.Job{
+		"bad": {ID: 1, Status: "failed", SeriesTitle: attack, Title: attack,
+			BroadcasterName: attack, ErrorKind: &kind, ErrorMessage: &message},
+	}}
+	response := getPage(newTestHandlerWithStore(&fakeFetcher{}, jobs, nil), "/queue")
+	body := response.Body.String()
+	if response.Code != http.StatusOK || strings.Contains(body, attack) || strings.Contains(body, message) || strings.Count(body, "&lt;script&gt;") != 3 || !strings.Contains(body, "&lt;img src=x onerror=alert(1)&gt;") {
+		t.Fatalf("待ち行列の HTML エスケープ: %d %s", response.Code, body)
+	}
+}
+
+func TestQueueCancelRetryAndStopPolling(t *testing.T) {
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep": {ID: 1, Status: "queued"}}}
+	handler := newTestHandlerWithStore(&fakeFetcher{}, jobs, nil)
+	if !strings.Contains(getPage(handler, "/queue").Body.String(), `hx-get="/queue/list"`) {
+		t.Fatal("待機中なのに更新がない")
+	}
+	canceled := postForm(handler, "/jobs/1/cancel", nil)
+	if canceled.Code != http.StatusOK || !strings.Contains(canceled.Body.String(), `action="/jobs/1/retry"`) || strings.Contains(canceled.Body.String(), `hx-get="/queue/list"`) {
+		t.Fatalf("取り消し後: %d %s", canceled.Code, canceled.Body.String())
+	}
+	retried := postForm(handler, "/jobs/1/retry", nil)
+	if retried.Code != http.StatusOK || !strings.Contains(retried.Body.String(), `action="/jobs/1/cancel"`) || !strings.Contains(retried.Body.String(), `hx-get="/queue/list"`) {
+		t.Fatalf("再試行後: %d %s", retried.Code, retried.Body.String())
+	}
+	if got := postForm(handler, "/jobs/1/retry", nil).Code; got != http.StatusConflict {
+		t.Fatalf("待機中の再試行: %d", got)
+	}
+	if got := postForm(handler, "/jobs/bad/cancel", nil).Code; got != http.StatusBadRequest {
+		t.Fatalf("不正な ID: %d", got)
+	}
+	if got := postForm(handler, "/jobs/99/cancel", nil).Code; got != http.StatusNotFound {
+		t.Fatalf("存在しないジョブ: %d", got)
+	}
+	jobs.jobs["ep"] = store.Job{ID: 1, Status: "running"}
+	runningCanceled := postForm(handler, "/jobs/1/cancel", nil)
+	if runningCanceled.Code != http.StatusOK || jobs.jobs["ep"].Status != "canceled" || !strings.Contains(runningCanceled.Body.String(), `action="/jobs/1/retry"`) {
+		t.Fatalf("実行中の取り消し: %d %+v", runningCanceled.Code, jobs.jobs["ep"])
+	}
+}
+
+func TestStateChangingGETIsRejected(t *testing.T) {
+	jobs := &fakeJobStore{jobs: map[string]store.Job{"ep": {ID: 1, Status: "queued"}}}
+	handler := newTestHandlerWithStore(&fakeFetcher{episodes: []tver.Episode{{ID: "ep", Duration: 200}}}, jobs, nil)
+	getPage(handler, "/")
+	for _, path := range []string{
+		"/episodes/enqueue?episode_id=ep&genre=drama",
+		"/episodes/retry?episode_id=ep&genre=drama",
+		"/jobs/1/cancel", "/jobs/1/retry",
+	} {
+		response := getPage(handler, path)
+		if response.Code != http.StatusMethodNotAllowed || !strings.Contains(response.Header().Get("Allow"), "POST") {
+			t.Errorf("GET %s: status=%d Allow=%q", path, response.Code, response.Header().Get("Allow"))
+		}
+	}
+	if jobs.jobs["ep"].Status != "queued" || jobs.enqueueCalls != 0 {
+		t.Fatalf("GET が状態を変更した: jobs=%+v enqueue=%d", jobs.jobs, jobs.enqueueCalls)
+	}
+}
+
+func TestStateChangingPOSTWithoutHtmxRedirects(t *testing.T) {
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(&fakeFetcher{episodes: []tver.Episode{{ID: "ep", Duration: 200}}}, jobs, nil)
+	getPage(handler, "/")
+	form := url.Values{"episode_id": {"ep"}, "genre": {"drama"}}
+	request := httptest.NewRequest(http.MethodPost, "/episodes/enqueue", strings.NewReader(form.Encode()))
+	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusSeeOther || response.Header().Get("Location") != "/?genre=drama" || jobs.jobs["ep"].Status != "queued" {
+		t.Fatalf("通常 POST 後の遷移: status=%d Location=%q jobs=%+v", response.Code, response.Header().Get("Location"), jobs.jobs)
+	}
+	request = httptest.NewRequest(http.MethodPost, "/jobs/1/cancel", nil)
+	response = httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusSeeOther || response.Header().Get("Location") != "/queue" || jobs.jobs["ep"].Status != "canceled" {
+		t.Fatalf("待ち行列操作後の遷移: status=%d Location=%q jobs=%+v", response.Code, response.Header().Get("Location"), jobs.jobs)
+	}
+}
+
+func TestNewerStoreFailureDoesNotOfferDownload(t *testing.T) {
+	jobs := &fakeJobStore{err: errors.New("db unavailable")}
+	handler := newTestHandlerWithStore(&fakeFetcher{episodes: []tver.Episode{{ID: "ep", Duration: 200}}}, jobs, nil)
+	response := getPage(handler, "/")
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "状態を取得できませんでした") || strings.Contains(response.Body.String(), ">ダウンロード</button>") {
+		t.Errorf("状態取得失敗: %d %s", response.Code, response.Body.String())
+	}
+}
+
+func TestEnqueueStoreFailureShowsShortError(t *testing.T) {
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(&fakeFetcher{episodes: []tver.Episode{{ID: "ep", Duration: 200}}}, jobs, nil)
+	getPage(handler, "/")
+	jobs.err = errors.New("secret database detail")
+	response := postForm(handler, "/episodes/enqueue", url.Values{"genre": {"drama"}, "episode_id": {"ep"}})
+	if response.Code != http.StatusInternalServerError || !strings.Contains(response.Body.String(), "待ち行列に登録できませんでした") || strings.Contains(response.Body.String(), "secret") {
+		t.Errorf("DB エラーの表示: %d %s", response.Code, response.Body.String())
+	}
+}
+
+func TestQueueProgressAndFailureLabels(t *testing.T) {
+	s := &server{zone: time.FixedZone("JST", 9*60*60)}
+	for _, tt := range []struct{ kind, label string }{
+		{"drm", "DRM のため取得不可"}, {"geo", "地域制限"},
+		{"network", "ネットワーク"}, {"unavailable", "配信終了・存在しない"},
+		{"extract", "抽出失敗"}, {"invalid_output", "出力形式の不正"},
+		{"unknown", "不明"},
+	} {
+		if got := errorKindText(tt.kind); got != tt.label {
+			t.Errorf("%s: %q", tt.kind, got)
+		}
+	}
+	for _, tt := range []struct{ phase, label string }{
+		{"video", "映像"}, {"audio", "音声"}, {"merging", "結合"}, {"moving", "移動"},
+	} {
+		if got := s.queueJob(store.Job{Phase: &tt.phase}).PhaseText; got != tt.label {
+			t.Errorf("%s: %q", tt.phase, got)
+		}
+	}
+	downloaded, total := int64(50), int64(100)
+	job := store.Job{DownloadedBytes: &downloaded, TotalBytes: &total}
+	if got := s.queueJob(job).PercentText; got != "50%" {
+		t.Errorf("確定した段階の割合: %q", got)
+	}
+	job.TotalIsEstimate = true
+	if got := s.queueJob(job).PercentText; got != "約50%" {
+		t.Errorf("推定した段階の割合: %q", got)
+	}
+	total = 0
+	if got := s.queueJob(job).PercentText; got != "" {
+		t.Errorf("総量ゼロでの割合: %q", got)
+	}
+}

internal/web/static/app.css

@@ -0,0 +1,62 @@
+body { font-family: system-ui, sans-serif; margin: 0; color: #17212b; }
+header { display: flex; align-items: center; gap: 2rem; padding: 1rem 2rem; border-bottom: 1px solid #d6dee4; }
+nav { display: flex; flex-wrap: wrap; gap: 1.5rem; }
+nav a { color: #145a86; }
+main { max-width: 72rem; margin: 2rem auto; padding: 0 2rem; }
+#newer-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem; margin-bottom: 2rem; }
+#newer-controls select, #newer-controls button { font: inherit; padding: .35rem .6rem; }
+.episode-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1.25rem; }
+.episode-card { border: 1px solid #d6dee4; border-radius: .5rem; overflow: hidden; }
+.library-selection { display: flex; align-items: center; gap: .4rem; padding: .6rem .8rem; }
+.library-select-grid .episode-card { display: flex; flex-direction: column; }
+.library-select-grid .episode-card > a { flex: 1; }
+.episode-card a { color: inherit; text-decoration: none; }
+.episode-card a:hover h2 { text-decoration: underline; }
+.episode-card img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: #e5ebef; }
+.library-card-image { position: relative; }
+.episode-count-badge, .subscription-badge { display: inline-block; border-radius: 999px; padding: .15rem .5rem; font-size: .8rem; line-height: 1.2; }
+.episode-count-badge { position: absolute; right: .5rem; bottom: .5rem; color: #fff; background: rgba(23, 33, 43, .85); }
+.subscription-badge { color: #145a86; background: #e1f1fb; vertical-align: middle; }
+.episode-copy { padding: .8rem 1rem; }
+.episode-copy h2 { font-size: 1.1rem; margin: 0 0 .4rem; }
+.episode-copy p { margin: .3rem 0; }
+.episode-action { padding: 0 .8rem .8rem; }
+.subscription-action { padding: 0 .8rem .8rem; }
+.subscription-action button, .subscription-item button { font: inherit; padding: .35rem .7rem; }
+.subscription-item { border: 1px solid #d6dee4; border-radius: .5rem; margin: .75rem 0; padding: .8rem 1rem; }
+.subscription-item form { display: inline-block; margin-right: .5rem; }
+.subscription-url-entry { border: 1px solid #d6dee4; border-radius: .5rem; margin-bottom: 1.5rem; padding: .8rem 1rem; }
+.subscription-url-entry input[type="url"] { font: inherit; min-width: min(32rem, 70vw); padding: .35rem .5rem; }
+.subscription-url-entry button { font: inherit; padding: .35rem .7rem; }
+.episode-action form { display: inline; }
+.episode-action button, .queue-job button { font: inherit; padding: .35rem .7rem; }
+.queue-job { border: 1px solid #d6dee4; border-radius: .5rem; margin: .75rem 0; padding: .8rem 1rem; }
+.queue-job h3 { margin: 0 0 .4rem; }
+.queue-job p { margin: .4rem 0; }
+.queue-job pre { white-space: pre-wrap; overflow-wrap: anywhere; }
+video { display: block; width: 100%; max-height: 75vh; background: #000; }
+.breadcrumbs { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1rem; overflow-wrap: anywhere; }
+.library-sort { margin: 1rem 0; }
+.library-episode-list { border-top: 1px solid #d6dee4; }
+.library-episode-select-row { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; border-bottom: 1px solid #d6dee4; }
+.library-episode-row { display: grid; grid-template-columns: 8rem minmax(0, 1fr) auto auto auto; gap: .8rem; align-items: center; padding: .7rem 0; border-bottom: 1px solid #d6dee4; color: inherit; text-decoration: none; }
+.library-episode-select-row .library-episode-row { border-bottom: 0; }
+.library-episode-row:hover .library-episode-title { text-decoration: underline; }
+.library-episode-row img { display: block; width: 8rem; aspect-ratio: 16 / 9; object-fit: cover; background: #e5ebef; }
+.library-episode-title { min-width: 0; overflow-wrap: anywhere; font-weight: 600; }
+.episode-navigation { display: flex; justify-content: space-between; gap: 1rem; margin: 1rem 0; }
+.episode-navigation a, .episode-navigation span { min-width: 0; overflow-wrap: anywhere; }
+.delete-warning { border-left: .3rem solid #b42318; background: #fff1f0; padding: .8rem 1rem; }
+.delete-group { overflow-wrap: anywhere; }
+
+@media (max-width: 36rem) {
+  header { align-items: flex-start; flex-direction: column; gap: .75rem; padding: 1rem; }
+  main { margin: 1.25rem auto; padding: 0 1rem; }
+  .episode-grid { grid-template-columns: minmax(0, 1fr); }
+  .library-episode-row { grid-template-columns: 6rem minmax(0, 1fr); gap: .35rem .7rem; }
+  .library-episode-select-row { grid-template-columns: 1fr; }
+  .library-episode-select-row > .library-selection { padding: .7rem 0 0; }
+  .library-episode-row img { grid-row: 1 / span 4; width: 6rem; }
+  .library-episode-row > span:not(.library-episode-title) { grid-column: 2; font-size: .9rem; }
+  .episode-navigation { flex-direction: column; }
+}

internal/web/static/htmx-LICENSE.txt

@@ -0,0 +1,13 @@
+Zero-Clause BSD
+=============
+
+Permission to use, copy, modify, and/or distribute this software for
+any purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL
+WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE
+FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

internal/web/store_test.go

@@ -0,0 +1,361 @@
+package web
+
+import (
+	"context"
+	"sort"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"github.com/jackc/pgx/v5"
+)
+
+type fakeJobStore struct {
+	jobs                      map[string]store.Job
+	subscriptions             map[string]store.Subscription
+	nextID                    int64
+	lastEpisode               store.Episode
+	enqueueCalls, statusCalls int
+	statusIDs                 []string
+	listStatuses              []string
+	listLimits                []int
+	registerCalls             int
+	registerEpisodes          []store.Episode
+	registerDownload          bool
+	registerErr               error
+	subscribedCalls           int
+	subscribedIDs             []string
+	beforeDeleteSucceeded     func()
+	err                       error
+}
+
+func (f *fakeJobStore) ensure() {
+	if f.jobs == nil {
+		f.jobs = make(map[string]store.Job)
+	}
+}
+
+func (f *fakeJobStore) Enqueue(_ context.Context, ep store.Episode, source string) (store.Job, bool, error) {
+	f.enqueueCalls++
+	f.lastEpisode = ep
+	if f.err != nil {
+		return store.Job{}, false, f.err
+	}
+	f.ensure()
+	if job, ok := f.jobs[ep.ID]; ok {
+		return job, false, nil
+	}
+	f.nextID++
+	job := store.Job{ID: f.nextID, EpisodeID: ep.ID, SeriesTitle: ep.SeriesTitle,
+		Title: ep.Title, BroadcasterName: ep.BroadcasterName, Source: source,
+		Status: "queued", CreatedAt: time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)}
+	f.jobs[ep.ID] = job
+	return job, true, nil
+}
+
+func (f *fakeJobStore) EpisodeStatuses(_ context.Context, ids []string) (map[string]string, error) {
+	f.statusCalls++
+	f.statusIDs = append([]string(nil), ids...)
+	if f.err != nil {
+		return nil, f.err
+	}
+	result := make(map[string]string)
+	for _, id := range ids {
+		if job, ok := f.jobs[id]; ok {
+			result[id] = job.Status
+		}
+	}
+	return result, nil
+}
+
+func (f *fakeJobStore) ListJobs(_ context.Context, status string, limit int) ([]store.Job, error) {
+	f.listStatuses = append(f.listStatuses, status)
+	f.listLimits = append(f.listLimits, limit)
+	if f.err != nil {
+		return nil, f.err
+	}
+	var result []store.Job
+	for _, job := range f.jobs {
+		if job.Status == status {
+			result = append(result, job)
+		}
+	}
+	sort.Slice(result, func(i, j int) bool { return result[i].ID > result[j].ID })
+	if len(result) > limit {
+		result = result[:limit]
+	}
+	return result, nil
+}
+
+func (f *fakeJobStore) GetJob(_ context.Context, id int64) (store.Job, error) {
+	if f.err != nil {
+		return store.Job{}, f.err
+	}
+	for _, job := range f.jobs {
+		if job.ID == id {
+			return job, nil
+		}
+	}
+	return store.Job{}, pgx.ErrNoRows
+}
+
+func (f *fakeJobStore) Retry(_ context.Context, id int64) error {
+	for ep, job := range f.jobs {
+		if job.ID == id && (job.Status == "failed" || job.Status == "canceled") {
+			job.Status = "queued"
+			f.jobs[ep] = job
+			return nil
+		}
+	}
+	return store.ErrInvalidTransition
+}
+
+func (f *fakeJobStore) RetryEpisode(_ context.Context, id string) error {
+	job, ok := f.jobs[id]
+	if !ok || (job.Status != "failed" && job.Status != "canceled") {
+		return store.ErrInvalidTransition
+	}
+	job.Status = "queued"
+	f.jobs[id] = job
+	return nil
+}
+
+func (f *fakeJobStore) Cancel(_ context.Context, id int64) error {
+	if f.err != nil {
+		return f.err
+	}
+	for ep, job := range f.jobs {
+		if job.ID == id && (job.Status == "queued" || job.Status == "running") {
+			job.Status = "canceled"
+			f.jobs[ep] = job
+			return nil
+		}
+	}
+	return store.ErrInvalidTransition
+}
+
+func (f *fakeJobStore) CancelQueued(ctx context.Context, id int64) error {
+	return f.Cancel(ctx, id)
+}
+
+var _ JobStore = (*fakeJobStore)(nil)
+
+func (f *fakeJobStore) SubscribedSeries(_ context.Context, ids []string) (map[string]bool, error) {
+	f.subscribedCalls++
+	f.subscribedIDs = append([]string(nil), ids...)
+	if f.err != nil {
+		return nil, f.err
+	}
+	result := make(map[string]bool)
+	for _, id := range ids {
+		_, result[id] = f.subscriptions[id]
+	}
+	return result, nil
+}
+
+func (f *fakeJobStore) RegisterSubscription(_ context.Context, seriesID, title string, episodes []store.Episode, download bool) (bool, error) {
+	f.registerCalls++
+	f.registerEpisodes = append([]store.Episode(nil), episodes...)
+	f.registerDownload = download
+	if f.registerErr != nil {
+		return false, f.registerErr
+	}
+	if f.err != nil {
+		return false, f.err
+	}
+	if f.subscriptions == nil {
+		f.subscriptions = make(map[string]store.Subscription)
+	}
+	if _, exists := f.subscriptions[seriesID]; exists {
+		return false, nil
+	}
+	var count int64
+	if download {
+		count = int64(len(episodes))
+	}
+	checked := time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC)
+	f.subscriptions[seriesID] = store.Subscription{SeriesID: seriesID, SeriesTitle: title,
+		Enabled: true, CreatedAt: checked, LastCheckedAt: &checked, JobCount: count}
+	return true, nil
+}
+
+func (f *fakeJobStore) ListSubscriptions(_ context.Context) ([]store.Subscription, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	var result []store.Subscription
+	for _, sub := range f.subscriptions {
+		result = append(result, sub)
+	}
+	sort.Slice(result, func(i, j int) bool { return result[i].SeriesID < result[j].SeriesID })
+	return result, nil
+}
+
+func (f *fakeJobStore) SetSubscriptionEnabled(_ context.Context, seriesID string, enabled bool) error {
+	if f.err != nil {
+		return f.err
+	}
+	sub, exists := f.subscriptions[seriesID]
+	if !exists {
+		return store.ErrInvalidTransition
+	}
+	sub.Enabled = enabled
+	f.subscriptions[seriesID] = sub
+	return nil
+}
+
+func (f *fakeJobStore) DeleteSubscription(_ context.Context, seriesID string) (bool, error) {
+	if f.err != nil {
+		return false, f.err
+	}
+	if _, exists := f.subscriptions[seriesID]; !exists {
+		return false, nil
+	}
+	delete(f.subscriptions, seriesID)
+	return true, nil
+}
+
+func (f *fakeJobStore) ListSucceededJobs(_ context.Context, limit int) ([]store.Job, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	var result []store.Job
+	for _, job := range f.jobs {
+		if job.Status == "succeeded" {
+			result = append(result, job)
+		}
+	}
+	sort.Slice(result, func(i, j int) bool { return result[i].ID > result[j].ID })
+	if len(result) > limit {
+		result = result[:limit]
+	}
+	return result, nil
+}
+
+func (f *fakeJobStore) ListLibrarySeries(_ context.Context) ([]store.LibrarySeries, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	bySeries := make(map[string]*store.LibrarySeries)
+	latestIDs := make(map[string]int64)
+	for _, job := range f.jobs {
+		if job.Status != "succeeded" {
+			continue
+		}
+		item := bySeries[job.SeriesID]
+		if item == nil {
+			item = &store.LibrarySeries{SeriesID: job.SeriesID}
+			bySeries[job.SeriesID] = item
+		}
+		item.EpisodeCount++
+		if job.FileSizeBytes != nil {
+			item.TotalSizeBytes += *job.FileSizeBytes
+		}
+		current := store.Job{ID: latestIDs[job.SeriesID], FinishedAt: item.LatestFinishedAt}
+		if item.SeriesTitle == "" || jobFinishedLater(job, current) {
+			item.SeriesTitle = job.SeriesTitle
+			item.LatestTitle = job.Title
+			item.BroadcasterName = job.BroadcasterName
+			item.ThumbnailPath = job.ThumbnailPath
+			if job.FinishedAt != nil {
+				finished := *job.FinishedAt
+				item.LatestFinishedAt = &finished
+			}
+			latestIDs[job.SeriesID] = job.ID
+		}
+		_, item.Subscribed = f.subscriptions[job.SeriesID]
+	}
+	result := make([]store.LibrarySeries, 0, len(bySeries))
+	for _, item := range bySeries {
+		result = append(result, *item)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		left, right := result[i].LatestFinishedAt, result[j].LatestFinishedAt
+		if left == nil || right == nil {
+			if left != right {
+				return left != nil
+			}
+		} else if !left.Equal(*right) {
+			return left.After(*right)
+		}
+		return result[i].SeriesID < result[j].SeriesID
+	})
+	return result, nil
+}
+
+func (f *fakeJobStore) ListSucceededJobsBySeries(_ context.Context, seriesID string) ([]store.Job, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	var result []store.Job
+	for _, job := range f.jobs {
+		if job.Status == "succeeded" && job.SeriesID == seriesID {
+			result = append(result, job)
+		}
+	}
+	sortJobsLatest(result)
+	return result, nil
+}
+
+func (f *fakeJobStore) ListSucceededJobsByIDs(_ context.Context, ids []int64) ([]store.Job, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	wanted := make(map[int64]struct{}, len(ids))
+	for _, id := range ids {
+		wanted[id] = struct{}{}
+	}
+	var result []store.Job
+	for _, job := range f.jobs {
+		if _, ok := wanted[job.ID]; ok && job.Status == "succeeded" {
+			result = append(result, job)
+		}
+	}
+	sortJobsLatest(result)
+	return result, nil
+}
+
+func (f *fakeJobStore) ListSucceededJobsBySeriesIDs(_ context.Context, seriesIDs []string) ([]store.Job, error) {
+	if f.err != nil {
+		return nil, f.err
+	}
+	wanted := make(map[string]struct{}, len(seriesIDs))
+	for _, id := range seriesIDs {
+		wanted[id] = struct{}{}
+	}
+	var result []store.Job
+	for _, job := range f.jobs {
+		if _, ok := wanted[job.SeriesID]; ok && job.Status == "succeeded" {
+			result = append(result, job)
+		}
+	}
+	sortJobsLatest(result)
+	return result, nil
+}
+
+func (f *fakeJobStore) GetSucceededJob(_ context.Context, id int64) (store.Job, error) {
+	if f.err != nil {
+		return store.Job{}, f.err
+	}
+	for _, job := range f.jobs {
+		if job.ID == id && job.Status == "succeeded" {
+			return job, nil
+		}
+	}
+	return store.Job{}, pgx.ErrNoRows
+}
+
+func (f *fakeJobStore) DeleteSucceededJob(_ context.Context, id int64) error {
+	if f.beforeDeleteSucceeded != nil {
+		f.beforeDeleteSucceeded()
+	}
+	if f.err != nil {
+		return f.err
+	}
+	for episodeID, job := range f.jobs {
+		if job.ID == id && job.Status == "succeeded" {
+			delete(f.jobs, episodeID)
+			return nil
+		}
+	}
+	return store.ErrInvalidTransition
+}

internal/web/subscription_url.go

@@ -0,0 +1,161 @@
+package web
+
+import (
+	"errors"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strings"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+const seriesURLInputError = "番組ページ（https://tver.jp/series/…）の URL を入力してください"
+
+var seriesURLPathPattern = regexp.MustCompile(`^/series/([A-Za-z0-9]+)/?$`)
+var seriesIDPattern = regexp.MustCompile(`^[A-Za-z0-9]+$`)
+
+type subscriptionURLResultView struct {
+	SeriesID, Title, ErrorText string
+	EpisodeCount               int
+	Subscribed                 bool
+}
+
+type subscriptionURLRegisteredView struct {
+	Subscriptions subscriptionsView
+}
+
+func parseSeriesURL(raw string) (string, error) {
+	parsed, err := url.Parse(strings.TrimSpace(raw))
+	if err != nil || parsed.Scheme != "https" || parsed.User != nil || (!strings.EqualFold(parsed.Host, "tver.jp") && !strings.EqualFold(parsed.Host, "www.tver.jp")) {
+		return "", errors.New(seriesURLInputError)
+	}
+	match := seriesURLPathPattern.FindStringSubmatch(parsed.Path)
+	if len(match) != 2 {
+		return "", errors.New(seriesURLInputError)
+	}
+	return match[1], nil
+}
+
+func (s *server) confirmSubscriptionURL(w http.ResponseWriter, r *http.Request) {
+	if r.Header.Get("HX-Request") != "true" {
+		http.Redirect(w, r, "/subscriptions", http.StatusSeeOther)
+		return
+	}
+	if err := r.ParseForm(); err != nil {
+		http.Error(w, "入力が不正です", http.StatusBadRequest)
+		return
+	}
+	seriesID, err := parseSeriesURL(r.Form.Get("series_url"))
+	if err != nil {
+		s.render(w, "subscription_url_result", subscriptionURLResultView{ErrorText: seriesURLInputError})
+		return
+	}
+	title, episodes, ok := s.fetchSubscriptionSeries(w, r, seriesID)
+	if !ok {
+		return
+	}
+	subscribed, err := s.isSubscribed(r.Context(), seriesID)
+	if err != nil {
+		s.logger.Printf("番組の登録状態取得に失敗: %v", err)
+		http.Error(w, "登録状態を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	s.render(w, "subscription_url_result", subscriptionURLResultView{
+		SeriesID: seriesID, Title: title, EpisodeCount: len(episodes), Subscribed: subscribed,
+	})
+}
+
+func (s *server) registerSubscriptionURL(w http.ResponseWriter, r *http.Request) {
+	if err := r.ParseForm(); err != nil {
+		http.Error(w, "入力が不正です", http.StatusBadRequest)
+		return
+	}
+	seriesID := r.Form.Get("series_id")
+	if !seriesIDPattern.MatchString(seriesID) {
+		http.Error(w, "番組 ID が不正です", http.StatusBadRequest)
+		return
+	}
+	choice := r.Form.Get("download_existing")
+	if choice != "" && choice != "1" {
+		http.Error(w, "公開中の回の選択が不正です", http.StatusBadRequest)
+		return
+	}
+	subscribed, err := s.isSubscribed(r.Context(), seriesID)
+	if err != nil {
+		s.logger.Printf("番組の登録状態取得に失敗: %v", err)
+		http.Error(w, "登録状態を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	if subscribed {
+		s.subscriptionURLRegisteredResponse(w, r)
+		return
+	}
+	title, episodes, ok := s.fetchSubscriptionSeries(w, r, seriesID)
+	if !ok {
+		return
+	}
+	items := make([]store.Episode, 0, len(episodes))
+	for _, episode := range episodes {
+		items = append(items, storeEpisode(episode))
+	}
+	_, err = s.jobs.RegisterSubscription(r.Context(), seriesID, title, items, choice == "1")
+	if err != nil {
+		s.logger.Printf("番組URLからの登録に失敗: %v", err)
+		s.subscriptionURLFailure(w, r, "番組を登録できませんでした。再試行してください")
+		return
+	}
+	s.subscriptionURLRegisteredResponse(w, r)
+}
+
+func (s *server) cancelSubscriptionURL(w http.ResponseWriter, _ *http.Request) {
+	s.render(w, "subscription_url_result", subscriptionURLResultView{})
+}
+
+func (s *server) fetchSubscriptionSeries(w http.ResponseWriter, r *http.Request, seriesID string) (string, []tver.Episode, bool) {
+	title, err := s.fetcher.FetchSeries(r.Context(), seriesID)
+	if err != nil {
+		if errors.Is(err, tver.ErrSeriesNotFound) {
+			s.subscriptionURLFailure(w, r, "番組が見つかりません")
+			return "", nil, false
+		}
+		s.logSubscriptionFetchError(err)
+		s.subscriptionURLFailure(w, r, "番組情報を取得できませんでした。再試行してください")
+		return "", nil, false
+	}
+	episodes, err := s.fetcher.FetchSeriesEpisodes(r.Context(), seriesID)
+	if err != nil {
+		s.logSubscriptionFetchError(err)
+		s.subscriptionURLFailure(w, r, "番組情報を取得できませんでした。再試行してください")
+		return "", nil, false
+	}
+	return title, episodes, true
+}
+
+func (s *server) logSubscriptionFetchError(err error) {
+	s.logger.Printf("番組URLの情報取得に失敗: %s", platformTokenPattern.ReplaceAllString(err.Error(), "${1}[REDACTED]"))
+}
+
+func (s *server) subscriptionURLFailure(w http.ResponseWriter, r *http.Request, message string) {
+	if r.Header.Get("HX-Request") != "true" {
+		http.Redirect(w, r, "/subscriptions", http.StatusSeeOther)
+		return
+	}
+	s.render(w, "subscription_url_result", subscriptionURLResultView{ErrorText: message})
+}
+
+func (s *server) subscriptionURLRegisteredResponse(w http.ResponseWriter, r *http.Request) {
+	if r.Header.Get("HX-Request") != "true" {
+		http.Redirect(w, r, "/subscriptions", http.StatusSeeOther)
+		return
+	}
+	view, err := s.loadSubscriptions(r.Context())
+	if err != nil {
+		s.logger.Printf("登録番組の取得に失敗: %v", err)
+		http.Error(w, "登録番組を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	view.OutOfBand = true
+	s.render(w, "subscription_url_registered", subscriptionURLRegisteredView{Subscriptions: view})
+}

internal/web/subscription_url_test.go

@@ -0,0 +1,260 @@
+package web
+
+import (
+	"bytes"
+	"errors"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+func TestParseSeriesURL(t *testing.T) {
+	tests := []struct {
+		name, raw, want string
+		valid           bool
+	}{
+		{"without www", "https://tver.jp/series/sr123", "sr123", true},
+		{"with www", "https://www.tver.jp/series/ABC123", "ABC123", true},
+		{"uppercase host", "https://TVER.JP/series/sr123", "sr123", true},
+		{"trailing slash", "https://tver.jp/series/sr123/", "sr123", true},
+		{"query and fragment", "https://tver.jp/series/sr123/?foo=bar#section", "sr123", true},
+		{"surrounding whitespace", " \thttps://tver.jp/series/sr123\n", "sr123", true},
+		{"http", "http://tver.jp/series/sr123", "", false},
+		{"subdomain suffix", "https://tver.jp.example.com/series/sr123", "", false},
+		{"evil prefix", "https://eviltver.jp/series/sr123", "", false},
+		{"userinfo on allowed host", "https://evil@tver.jp/series/sr123", "", false},
+		{"allowed host as userinfo", "https://tver.jp@evil.example/series/sr123", "", false},
+		{"episode", "https://tver.jp/episodes/ep123", "", false},
+		{"lp", "https://tver.jp/lp/example", "", false},
+		{"corner", "https://tver.jp/corner/example", "", false},
+		{"feature", "https://tver.jp/feature/example", "", false},
+		{"missing id", "https://tver.jp/series/", "", false},
+		{"invalid id", "https://tver.jp/series/sr_123", "", false},
+		{"extra path", "https://tver.jp/series/sr123/episodes", "", false},
+		{"encoded slash in id", "https://tver.jp/series/sr123%2Fevil", "", false},
+		{"encoded dot segments", "https://tver.jp/series/%2E%2E/episodes", "", false},
+		{"duplicate slash", "https://tver.jp//series/sr123", "", false},
+		{"port", "https://tver.jp:443/series/sr123", "", false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := parseSeriesURL(tt.raw)
+			if tt.valid {
+				if err != nil || got != tt.want {
+					t.Fatalf("parseSeriesURL(%q)=%q, %v; want %q", tt.raw, got, err, tt.want)
+				}
+				return
+			}
+			if err == nil || err.Error() != seriesURLInputError {
+				t.Fatalf("parseSeriesURL(%q)=%q, %v; want input error", tt.raw, got, err)
+			}
+		})
+	}
+}
+
+func TestSubscriptionsPageShowsSeriesURLForm(t *testing.T) {
+	page := getPage(newTestHandlerWithStore(&fakeFetcher{}, &fakeJobStore{}, nil), "/subscriptions")
+	body := page.Body.String()
+	if page.Code != http.StatusOK || !strings.Contains(body, `name="series_url"`) || !strings.Contains(body, `hx-post="/subscriptions/from-url/confirm"`) || !strings.Contains(body, `id="subscriptions-list"`) {
+		t.Fatalf("URL入力フォーム: status=%d body=%s", page.Code, body)
+	}
+}
+
+func TestConfirmSubscriptionURL(t *testing.T) {
+	fetcher := &fakeFetcher{
+		seriesTitle: `<script>alert("title")</script>`,
+		seriesEpisodes: []tver.Episode{
+			{ID: "ep1", SeriesID: "sr1"},
+			{ID: "ep2", SeriesID: "sr1"},
+		},
+	}
+	handler := newTestHandlerWithStore(fetcher, &fakeJobStore{}, nil)
+	response := postForm(handler, "/subscriptions/from-url/confirm", url.Values{"series_url": {"https://tver.jp/series/sr1?x=1#fragment"}})
+	body := response.Body.String()
+	for _, want := range []string{"&lt;script&gt;", "番組ID: sr1", "公開中の回数: 2件", `name="series_id" value="sr1"`, "公開中の回もダウンロードする", ">登録</button>", ">キャンセル</button>"} {
+		if !strings.Contains(body, want) {
+			t.Errorf("確認画面に %q がない: %s", want, body)
+		}
+	}
+	if response.Code != http.StatusOK || strings.Contains(body, `<script>`) || strings.Contains(body, `name="series_title"`) || strings.Contains(body, `checked`) {
+		t.Fatalf("確認画面: status=%d body=%s", response.Code, body)
+	}
+	if len(fetcher.seriesTitleCalls) != 1 || fetcher.seriesTitleCalls[0] != "sr1" || len(fetcher.seriesCalls) != 1 || fetcher.seriesCalls[0] != "sr1" {
+		t.Fatalf("取得したID: title=%v episodes=%v", fetcher.seriesTitleCalls, fetcher.seriesCalls)
+	}
+}
+
+func TestConfirmSubscriptionURLAlreadyRegisteredIncludingPaused(t *testing.T) {
+	fetcher := &fakeFetcher{seriesTitle: "番組", seriesEpisodes: []tver.Episode{{ID: "ep1", SeriesID: "sr1"}}}
+	jobs := &fakeJobStore{subscriptions: map[string]store.Subscription{"sr1": {SeriesID: "sr1", SeriesTitle: "番組", Enabled: false}}}
+	response := postForm(newTestHandlerWithStore(fetcher, jobs, nil), "/subscriptions/from-url/confirm", url.Values{"series_url": {"https://tver.jp/series/sr1"}})
+	body := response.Body.String()
+	if response.Code != http.StatusOK || !strings.Contains(body, "番組") || !strings.Contains(body, "公開中の回数: 1件") || !strings.Contains(body, "登録済み") || strings.Contains(body, ">登録</button>") || len(fetcher.seriesTitleCalls) != 1 || len(fetcher.seriesCalls) != 1 {
+		t.Fatalf("登録済み確認: status=%d body=%s title=%v episodes=%v", response.Code, body, fetcher.seriesTitleCalls, fetcher.seriesCalls)
+	}
+}
+
+func TestSubscriptionURLNotFoundAndInvalidURL(t *testing.T) {
+	fetcher := &fakeFetcher{seriesTitleErr: tver.ErrSeriesNotFound}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	notFound := postForm(handler, "/subscriptions/from-url/confirm", url.Values{"series_url": {"https://tver.jp/series/missing"}})
+	if notFound.Code != http.StatusOK || !strings.Contains(notFound.Body.String(), "番組が見つかりません") || len(fetcher.seriesCalls) != 0 {
+		t.Fatalf("404: status=%d body=%s episodeCalls=%v", notFound.Code, notFound.Body.String(), fetcher.seriesCalls)
+	}
+	registerNotFound := postForm(handler, "/subscriptions/from-url/register", url.Values{"series_id": {"missing"}})
+	if registerNotFound.Code != http.StatusOK || !strings.Contains(registerNotFound.Body.String(), "番組が見つかりません") || jobs.registerCalls != 0 {
+		t.Fatalf("登録時404: status=%d body=%s registerCalls=%d", registerNotFound.Code, registerNotFound.Body.String(), jobs.registerCalls)
+	}
+	invalid := postForm(handler, "/subscriptions/from-url/confirm", url.Values{"series_url": {"https://evil.example/series/sr1"}})
+	if invalid.Code != http.StatusOK || !strings.Contains(invalid.Body.String(), seriesURLInputError) || len(fetcher.seriesTitleCalls) != 2 {
+		t.Fatalf("不正URL: status=%d body=%s titleCalls=%v", invalid.Code, invalid.Body.String(), fetcher.seriesTitleCalls)
+	}
+}
+
+func TestRegisterSubscriptionURLWithAndWithoutExistingEpisodes(t *testing.T) {
+	for _, download := range []bool{false, true} {
+		t.Run(map[bool]string{false: "without existing", true: "with existing"}[download], func(t *testing.T) {
+			fetcher := &fakeFetcher{seriesTitle: "番組", seriesEpisodes: []tver.Episode{}}
+			jobs := &fakeJobStore{}
+			handler := newTestHandlerWithStore(fetcher, jobs, nil)
+			confirmation := postForm(handler, "/subscriptions/from-url/confirm", url.Values{"series_url": {"https://tver.jp/series/sr1"}})
+			if confirmation.Code != http.StatusOK || !strings.Contains(confirmation.Body.String(), "公開中の回はありません") {
+				t.Fatalf("0件の確認: %d %s", confirmation.Code, confirmation.Body.String())
+			}
+			values := url.Values{"series_id": {"sr1"}, "series_title": {"偽番組"}}
+			if download {
+				values.Set("download_existing", "1")
+			}
+			registered := postForm(handler, "/subscriptions/from-url/register", values)
+			body := registered.Body.String()
+			if registered.Code != http.StatusOK || !strings.Contains(body, "登録済み") || !strings.Contains(body, `id="subscriptions-list"`) || !strings.Contains(body, `hx-swap-oob="outerHTML"`) || !strings.Contains(body, `id="subscription-url-input"`) {
+				t.Fatalf("登録応答: %d %s", registered.Code, body)
+			}
+			if jobs.registerCalls != 1 || jobs.registerDownload != download || len(jobs.registerEpisodes) != 0 || jobs.subscriptions["sr1"].SeriesTitle != "番組" {
+				t.Fatalf("登録内容: calls=%d download=%t episodes=%v subscriptions=%v", jobs.registerCalls, jobs.registerDownload, jobs.registerEpisodes, jobs.subscriptions)
+			}
+			if len(fetcher.seriesTitleCalls) != 2 || len(fetcher.seriesCalls) != 2 {
+				t.Fatalf("確認と登録で再取得していない: title=%v episodes=%v", fetcher.seriesTitleCalls, fetcher.seriesCalls)
+			}
+		})
+	}
+}
+
+func TestRegisterSubscriptionURLUsesServerFetchedData(t *testing.T) {
+	fetcher := &fakeFetcher{seriesTitle: "本当の番組", seriesEpisodes: []tver.Episode{{
+		ID: "ep1", SeriesID: "sr1", SeriesTitle: "本当の番組", Title: "公開中の回", Duration: 200,
+	}}}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	response := postForm(handler, "/subscriptions/from-url/register", url.Values{
+		"series_id": {"sr1"}, "series_title": {"偽番組"}, "download_existing": {"1"},
+	})
+	if response.Code != http.StatusOK || jobs.registerCalls != 1 || !jobs.registerDownload || len(jobs.registerEpisodes) != 1 || jobs.registerEpisodes[0].ID != "ep1" || jobs.subscriptions["sr1"].SeriesTitle != "本当の番組" {
+		t.Fatalf("サーバー取得値での登録: status=%d calls=%d download=%t episodes=%+v subscriptions=%+v", response.Code, jobs.registerCalls, jobs.registerDownload, jobs.registerEpisodes, jobs.subscriptions)
+	}
+}
+
+func TestRegisterSubscriptionURLAlreadyRegisteredDoesNothing(t *testing.T) {
+	fetcher := &fakeFetcher{seriesTitleErr: errors.New("must not fetch"), seriesErr: errors.New("must not fetch")}
+	jobs := &fakeJobStore{subscriptions: map[string]store.Subscription{"sr1": {SeriesID: "sr1", SeriesTitle: "番組", Enabled: false}}}
+	response := postForm(newTestHandlerWithStore(fetcher, jobs, nil), "/subscriptions/from-url/register", url.Values{"series_id": {"sr1"}})
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "登録済み") || jobs.registerCalls != 0 || len(fetcher.seriesTitleCalls) != 0 || len(fetcher.seriesCalls) != 0 {
+		t.Fatalf("登録済みの再登録: status=%d body=%s register=%d title=%v episodes=%v", response.Code, response.Body.String(), jobs.registerCalls, fetcher.seriesTitleCalls, fetcher.seriesCalls)
+	}
+}
+
+func TestRegisterSubscriptionURLFetchFailuresDoNotRegisterAndRedactToken(t *testing.T) {
+	for _, tt := range []struct {
+		name            string
+		seriesErr       error
+		episodesErr     error
+		wantEpisodeCall int
+	}{
+		{"series", errors.New("platform_token=secret-series& upstream"), nil, 0},
+		{"episodes", nil, errors.New("platform_token=secret-episodes& upstream"), 1},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			fetcher := &fakeFetcher{seriesTitle: "番組", seriesTitleErr: tt.seriesErr, seriesErr: tt.episodesErr}
+			jobs := &fakeJobStore{}
+			var logs bytes.Buffer
+			handler := NewHandler(fetcher, jobs, "", time.Now, log.New(&logs, "", 0))
+			response := postForm(handler, "/subscriptions/from-url/register", url.Values{"series_id": {"sr1"}})
+			if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), "番組情報を取得できませんでした。再試行してください") || jobs.registerCalls != 0 || len(jobs.subscriptions) != 0 {
+				t.Fatalf("取得失敗: status=%d body=%s calls=%d subscriptions=%v", response.Code, response.Body.String(), jobs.registerCalls, jobs.subscriptions)
+			}
+			if strings.Contains(logs.String(), "secret-") || !strings.Contains(logs.String(), "platform_token=[REDACTED]") || len(fetcher.seriesCalls) != tt.wantEpisodeCall {
+				t.Fatalf("ログまたは呼出回数: logs=%s episodeCalls=%v", logs.String(), fetcher.seriesCalls)
+			}
+		})
+	}
+}
+
+func TestRegisterSubscriptionURLRejectsInvalidChoice(t *testing.T) {
+	fetcher := &fakeFetcher{}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	for _, values := range []url.Values{
+		{},
+		{"series_id": {"bad_id"}},
+		{"series_id": {"../sr1"}},
+		{"series_id": {"sr1"}, "download_existing": {"yes"}},
+	} {
+		response := postForm(handler, "/subscriptions/from-url/register", values)
+		if response.Code != http.StatusBadRequest {
+			t.Errorf("不正値 %v: status=%d body=%s", values, response.Code, response.Body.String())
+		}
+	}
+	if len(fetcher.seriesTitleCalls) != 0 || len(fetcher.seriesCalls) != 0 || jobs.subscribedCalls != 0 || jobs.registerCalls != 0 {
+		t.Fatalf("不正な hidden 値で外部取得または DB 操作を実行: title=%v episodes=%v subscribed=%d register=%d", fetcher.seriesTitleCalls, fetcher.seriesCalls, jobs.subscribedCalls, jobs.registerCalls)
+	}
+}
+
+func TestCancelSubscriptionURLClearsConfirmation(t *testing.T) {
+	response := getPage(newTestHandlerWithStore(&fakeFetcher{}, &fakeJobStore{}, nil), "/subscriptions/from-url/cancel")
+	body := response.Body.String()
+	if response.Code != http.StatusOK || !strings.Contains(body, `id="subscription-url-result"`) || strings.Contains(body, `name="series_id"`) || strings.Contains(body, `role="alert"`) || strings.Contains(body, `role="status"`) {
+		t.Fatalf("キャンセル応答: status=%d body=%q", response.Code, response.Body.String())
+	}
+}
+
+func TestSubscriptionURLPostsWithoutHtmxRedirect(t *testing.T) {
+	fetcher := &fakeFetcher{seriesTitle: "番組", seriesEpisodes: []tver.Episode{}}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	for _, tt := range []struct {
+		path string
+		form url.Values
+	}{
+		{"/subscriptions/from-url/confirm", url.Values{"series_url": {"https://tver.jp/series/sr1"}}},
+		{"/subscriptions/from-url/register", url.Values{"series_id": {"sr1"}}},
+	} {
+		request := httptest.NewRequest(http.MethodPost, tt.path, strings.NewReader(tt.form.Encode()))
+		request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+		response := httptest.NewRecorder()
+		handler.ServeHTTP(response, request)
+		if response.Code != http.StatusSeeOther || response.Header().Get("Location") != "/subscriptions" {
+			t.Errorf("通常POST %s: status=%d Location=%q", tt.path, response.Code, response.Header().Get("Location"))
+		}
+	}
+	if len(fetcher.seriesTitleCalls) != 1 || jobs.registerCalls != 1 {
+		t.Fatalf("登録POSTが処理されていない: fetch=%v register=%d", fetcher.seriesTitleCalls, jobs.registerCalls)
+	}
+}
+
+func TestSubscriptionURLPostRoutesRejectGet(t *testing.T) {
+	handler := newTestHandlerWithStore(&fakeFetcher{}, &fakeJobStore{}, nil)
+	for _, path := range []string{"/subscriptions/from-url/confirm", "/subscriptions/from-url/register"} {
+		response := getPage(handler, path)
+		if response.Code != http.StatusMethodNotAllowed || !strings.Contains(response.Header().Get("Allow"), "POST") {
+			t.Errorf("GET %s: status=%d Allow=%q", path, response.Code, response.Header().Get("Allow"))
+		}
+	}
+}

internal/web/subscriptions.go

@@ -0,0 +1,192 @@
+package web
+
+import (
+	"context"
+	"errors"
+	"net/http"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+type subscriptionActionView struct {
+	ID, Genre, ErrorText                   string
+	Subscribed, Choosing, DownloadExisting bool
+}
+
+type subscriptionView struct {
+	ID, Title, CreatedAtText, LastCheckedText string
+	CheckErrorAtText, CheckErrorText          string
+	Enabled                                   bool
+	Jobs                                      int64
+}
+
+type subscriptionsView struct {
+	Items     []subscriptionView
+	OutOfBand bool
+}
+
+func (s *server) subscriptionChoice(w http.ResponseWriter, r *http.Request) {
+	genre, id, ok := episodeForm(w, r)
+	if !ok {
+		return
+	}
+	ep, found := s.cachedEpisode(genre, id)
+	if !found || ep.SeriesID == "" {
+		http.Error(w, "新着キャッシュに番組がありません。新着を再表示してください", http.StatusNotFound)
+		return
+	}
+	registered, err := s.isSubscribed(r.Context(), ep.SeriesID)
+	if err != nil {
+		s.logger.Printf("番組の登録状態取得に失敗: %v", err)
+		http.Error(w, "登録状態を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	if registered {
+		s.subscriptionRegisteredResponse(w, r, id, genre)
+		return
+	}
+	s.render(w, "subscription_action", subscriptionActionView{ID: id, Genre: genre, Choosing: true})
+}
+
+func (s *server) registerSubscription(w http.ResponseWriter, r *http.Request) {
+	genre, id, ok := episodeForm(w, r)
+	if !ok {
+		return
+	}
+	choice := r.Form.Get("download_existing")
+	if choice != "" && choice != "1" {
+		http.Error(w, "公開中の回の選択が不正です", http.StatusBadRequest)
+		return
+	}
+	ep, found := s.cachedEpisode(genre, id)
+	if !found || ep.SeriesID == "" || ep.SeriesTitle == "" {
+		http.Error(w, "新着キャッシュに番組がありません。新着を再表示してください", http.StatusNotFound)
+		return
+	}
+	registered, err := s.isSubscribed(r.Context(), ep.SeriesID)
+	if err != nil {
+		s.logger.Printf("番組の登録状態取得に失敗: %v", err)
+		http.Error(w, "登録状態を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	if registered {
+		s.subscriptionRegisteredResponse(w, r, id, genre)
+		return
+	}
+	episodes, err := s.fetcher.FetchSeriesEpisodes(r.Context(), ep.SeriesID)
+	if err != nil {
+		s.logger.Printf("番組の公開中エピソード取得に失敗: %s", platformTokenPattern.ReplaceAllString(err.Error(), "${1}[REDACTED]"))
+		s.render(w, "subscription_action", subscriptionActionView{ID: id, Genre: genre, Choosing: true, DownloadExisting: choice == "1", ErrorText: "公開中の回を取得できませんでした。再試行してください"})
+		return
+	}
+	items := make([]store.Episode, 0, len(episodes))
+	for _, episode := range episodes {
+		items = append(items, storeEpisode(episode))
+	}
+	_, err = s.jobs.RegisterSubscription(r.Context(), ep.SeriesID, ep.SeriesTitle, items, choice == "1")
+	if err != nil {
+		s.logger.Printf("番組登録に失敗: %v", err)
+		s.render(w, "subscription_action", subscriptionActionView{ID: id, Genre: genre, Choosing: true, DownloadExisting: choice == "1", ErrorText: "番組を登録できませんでした。再試行してください"})
+		return
+	}
+	s.subscriptionRegisteredResponse(w, r, id, genre)
+}
+
+func (s *server) subscriptionRegisteredResponse(w http.ResponseWriter, r *http.Request, id, genre string) {
+	if r.Header.Get("HX-Request") != "true" && r.Method == http.MethodPost {
+		http.Redirect(w, r, "/?genre="+genre, http.StatusSeeOther)
+		return
+	}
+	s.render(w, "subscription_action", subscriptionActionView{ID: id, Genre: genre, Subscribed: true})
+}
+
+func (s *server) isSubscribed(ctx context.Context, seriesID string) (bool, error) {
+	result, err := s.jobs.SubscribedSeries(ctx, []string{seriesID})
+	return result[seriesID], err
+}
+
+func (s *server) subscriptionsPage(w http.ResponseWriter, r *http.Request) {
+	view, err := s.loadSubscriptions(r.Context())
+	if err != nil {
+		s.logger.Printf("登録番組の取得に失敗: %v", err)
+		http.Error(w, "登録番組を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	s.render(w, "layout", page{Title: "登録番組", Subscriptions: &view})
+}
+
+func (s *server) subscriptionsFragment(w http.ResponseWriter, r *http.Request) {
+	view, err := s.loadSubscriptions(r.Context())
+	if err != nil {
+		s.logger.Printf("登録番組の取得に失敗: %v", err)
+		http.Error(w, "登録番組を取得できませんでした", http.StatusInternalServerError)
+		return
+	}
+	s.render(w, "subscriptions_list", view)
+}
+
+func (s *server) loadSubscriptions(ctx context.Context) (subscriptionsView, error) {
+	subs, err := s.jobs.ListSubscriptions(ctx)
+	if err != nil {
+		return subscriptionsView{}, err
+	}
+	view := subscriptionsView{Items: make([]subscriptionView, 0, len(subs))}
+	for _, sub := range subs {
+		item := subscriptionView{ID: sub.SeriesID, Title: sub.SeriesTitle,
+			CreatedAtText:   sub.CreatedAt.In(s.zone).Format("2006-01-02 15:04 MST"),
+			LastCheckedText: "未確認", Enabled: sub.Enabled, Jobs: sub.JobCount}
+		if sub.LastCheckedAt != nil {
+			item.LastCheckedText = sub.LastCheckedAt.In(s.zone).Format("2006-01-02 15:04 MST")
+		}
+		if sub.LastCheckErrorAt != nil && sub.LastCheckError != nil {
+			item.CheckErrorAtText = sub.LastCheckErrorAt.In(s.zone).Format("2006-01-02 15:04 MST")
+			item.CheckErrorText = *sub.LastCheckError
+		}
+		view.Items = append(view.Items, item)
+	}
+	return view, nil
+}
+
+func (s *server) pauseSubscription(w http.ResponseWriter, r *http.Request) {
+	s.subscriptionMutation(w, r, func(ctx context.Context, id string) error {
+		return s.jobs.SetSubscriptionEnabled(ctx, id, false)
+	})
+}
+
+func (s *server) resumeSubscription(w http.ResponseWriter, r *http.Request) {
+	s.subscriptionMutation(w, r, func(ctx context.Context, id string) error {
+		return s.jobs.SetSubscriptionEnabled(ctx, id, true)
+	})
+}
+
+func (s *server) deleteSubscription(w http.ResponseWriter, r *http.Request) {
+	s.subscriptionMutation(w, r, func(ctx context.Context, id string) error {
+		deleted, err := s.jobs.DeleteSubscription(ctx, id)
+		if err == nil && !deleted {
+			return store.ErrInvalidTransition
+		}
+		return err
+	})
+}
+
+func (s *server) subscriptionMutation(w http.ResponseWriter, r *http.Request, change func(context.Context, string) error) {
+	id := r.PathValue("id")
+	if id == "" {
+		http.Error(w, "番組 ID が不正です", http.StatusBadRequest)
+		return
+	}
+	if err := change(r.Context(), id); err != nil {
+		if errors.Is(err, store.ErrInvalidTransition) {
+			http.Error(w, "番組が見つかりません", http.StatusNotFound)
+		} else {
+			s.logger.Printf("登録番組の操作に失敗: %v", err)
+			http.Error(w, "登録番組を変更できませんでした", http.StatusInternalServerError)
+		}
+		return
+	}
+	if r.Header.Get("HX-Request") != "true" {
+		http.Redirect(w, r, "/subscriptions", http.StatusSeeOther)
+		return
+	}
+	s.subscriptionsFragment(w, r)
+}

internal/web/subscriptions_test.go

@@ -0,0 +1,199 @@
+package web
+
+import (
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+func TestRegisterSubscriptionChoicesAndServerOwnedSeries(t *testing.T) {
+	for _, download := range []bool{false, true} {
+		t.Run(map[bool]string{false: "without existing", true: "with existing"}[download], func(t *testing.T) {
+			fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "ep1", SeriesID: "sr1", SeriesTitle: "本当の番組", Duration: 200}},
+				seriesEpisodes: []tver.Episode{{ID: "ep1", SeriesID: "sr1", SeriesTitle: "本当の番組", Title: "公開中", Duration: 200}}}
+			jobs := &fakeJobStore{}
+			handler := newTestHandlerWithStore(fetcher, jobs, nil)
+			page := getPage(handler, "/")
+			if page.Code != http.StatusOK || !strings.Contains(page.Body.String(), "番組を登録") || jobs.subscribedCalls != 1 || len(jobs.subscribedIDs) != 1 || jobs.subscribedIDs[0] != "sr1" {
+				t.Fatalf("新着の登録状態: %d ids=%v body=%s", page.Code, jobs.subscribedIDs, page.Body.String())
+			}
+			choice := getPage(handler, "/subscriptions/choice?genre=drama&episode_id=ep1")
+			if choice.Code != http.StatusOK || !strings.Contains(choice.Body.String(), "公開中の回もダウンロードする") || !strings.Contains(choice.Body.String(), ">登録</button>") {
+				t.Fatalf("登録時の選択: %d %s", choice.Code, choice.Body.String())
+			}
+			values := url.Values{"genre": {"drama"}, "episode_id": {"ep1"}, "series_id": {"forged"}, "series_title": {"偽番組"}}
+			if download {
+				values.Set("download_existing", "1")
+			}
+			registered := postForm(handler, "/subscriptions/register", values)
+			if registered.Code != http.StatusOK || !strings.Contains(registered.Body.String(), "登録済み") {
+				t.Fatalf("登録応答: %d %s", registered.Code, registered.Body.String())
+			}
+			if jobs.registerCalls != 1 || jobs.registerDownload != download || len(jobs.registerEpisodes) != 1 || jobs.registerEpisodes[0].ID != "ep1" || jobs.registerEpisodes[0].SeriesID != "sr1" || jobs.subscriptions["sr1"].SeriesTitle != "本当の番組" {
+				t.Fatalf("登録内容: calls=%d download=%t episodes=%+v subs=%+v", jobs.registerCalls, jobs.registerDownload, jobs.registerEpisodes, jobs.subscriptions)
+			}
+			if len(fetcher.seriesCalls) != 1 || fetcher.seriesCalls[0] != "sr1" {
+				t.Fatalf("番組一覧取得: %v", fetcher.seriesCalls)
+			}
+			if !strings.Contains(getPage(handler, "/subscriptions").Body.String(), "最終確認: 2026-10-03 09:00 JST") {
+				t.Fatal("登録直後の最終確認日時が表示されない")
+			}
+			fetcher.seriesErr = errors.New("API unavailable")
+			duplicate := postForm(handler, "/subscriptions/register", values)
+			if duplicate.Code != http.StatusOK || !strings.Contains(duplicate.Body.String(), "登録済み") || len(fetcher.seriesCalls) != 1 || jobs.registerCalls != 1 {
+				t.Fatalf("重複登録が API を再取得: %d %s calls=%v register=%d", duplicate.Code, duplicate.Body.String(), fetcher.seriesCalls, jobs.registerCalls)
+			}
+			reloaded := getPage(handler, "/")
+			if !strings.Contains(reloaded.Body.String(), "登録済み") || strings.Contains(reloaded.Body.String(), ">番組を登録</button>") {
+				t.Fatalf("登録済みの表示: %s", reloaded.Body.String())
+			}
+		})
+	}
+}
+
+func TestRegisterSubscriptionRejectsMissingCacheAndFetchFailure(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{{ID: "ep1", SeriesID: "sr1", SeriesTitle: "番組", Duration: 200}}}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	values := url.Values{"genre": {"drama"}, "episode_id": {"ep1"}}
+	if got := postForm(handler, "/subscriptions/register", values).Code; got != http.StatusNotFound {
+		t.Fatalf("キャッシュ無しの登録: %d", got)
+	}
+	getPage(handler, "/")
+	for _, path := range []string{"/subscriptions/register", "/subscriptions/sr1/pause", "/subscriptions/sr1/resume", "/subscriptions/sr1/delete"} {
+		response := getPage(handler, path)
+		if response.Code != http.StatusMethodNotAllowed || !strings.Contains(response.Header().Get("Allow"), "POST") {
+			t.Errorf("GET での変更 %s: status=%d Allow=%q", path, response.Code, response.Header().Get("Allow"))
+		}
+	}
+	for _, tt := range []struct {
+		path string
+		want int
+	}{
+		{"/subscriptions/choice?genre=news&episode_id=ep1", http.StatusBadRequest},
+		{"/subscriptions/choice?genre=drama", http.StatusBadRequest},
+		{"/subscriptions/choice?genre=drama&episode_id=missing", http.StatusNotFound},
+	} {
+		response := getPage(handler, tt.path)
+		if response.Code != tt.want {
+			t.Errorf("不正な選択 %s: got=%d want=%d", tt.path, response.Code, tt.want)
+		}
+	}
+	for _, tt := range []struct {
+		values url.Values
+		want   int
+	}{
+		{url.Values{"genre": {"news"}, "episode_id": {"ep1"}}, http.StatusBadRequest},
+		{url.Values{"genre": {"drama"}}, http.StatusBadRequest},
+		{url.Values{"genre": {"drama"}, "episode_id": {"missing"}}, http.StatusNotFound},
+	} {
+		response := postForm(handler, "/subscriptions/register", tt.values)
+		if response.Code != tt.want {
+			t.Errorf("不正な登録 %v: got=%d want=%d", tt.values, response.Code, tt.want)
+		}
+	}
+	values.Set("download_existing", "bad")
+	if got := postForm(handler, "/subscriptions/register", values).Code; got != http.StatusBadRequest {
+		t.Fatalf("不正な選択: %d", got)
+	}
+	values.Del("download_existing")
+	fetcher.seriesErr = errors.New("platform_token=secret& upstream failure")
+	failed := postForm(handler, "/subscriptions/register", values)
+	if failed.Code != http.StatusOK || !strings.Contains(failed.Body.String(), "公開中の回を取得できませんでした") || strings.Contains(failed.Body.String(), "secret") || jobs.registerCalls != 0 {
+		t.Fatalf("取得失敗時に未登録: %d %s calls=%d", failed.Code, failed.Body.String(), jobs.registerCalls)
+	}
+	fetcher.seriesErr = nil
+	fetcher.seriesEpisodes = []tver.Episode{{ID: "ep1", SeriesID: "sr1", SeriesTitle: "番組", Duration: 200}}
+	jobs.registerErr = errors.New("secret database detail")
+	failed = postForm(handler, "/subscriptions/register", values)
+	if failed.Code != http.StatusOK || !strings.Contains(failed.Body.String(), "番組を登録できませんでした") || strings.Contains(failed.Body.String(), "secret") || len(jobs.subscriptions) != 0 {
+		t.Fatalf("DB 失敗時に未登録: %d %s subscriptions=%v", failed.Code, failed.Body.String(), jobs.subscriptions)
+	}
+}
+
+func TestNewerShowsInitiallySubscribedSeriesOncePerSeriesLookup(t *testing.T) {
+	fetcher := &fakeFetcher{episodes: []tver.Episode{
+		{ID: "ep1", SeriesID: "sr1", SeriesTitle: "番組", Duration: 200},
+		{ID: "ep2", SeriesID: "sr1", SeriesTitle: "番組", Duration: 200},
+	}}
+	jobs := &fakeJobStore{subscriptions: map[string]store.Subscription{
+		"sr1": {SeriesID: "sr1", SeriesTitle: "番組", Enabled: true},
+	}}
+	response := getPage(newTestHandlerWithStore(fetcher, jobs, nil), "/")
+	body := response.Body.String()
+	if response.Code != http.StatusOK || strings.Count(body, "登録済み") != 2 || strings.Contains(body, ">番組を登録</button>") || jobs.subscribedCalls != 1 || len(jobs.subscribedIDs) != 1 || jobs.subscribedIDs[0] != "sr1" {
+		t.Fatalf("登録済み番組の初期表示: status=%d calls=%d ids=%v body=%s", response.Code, jobs.subscribedCalls, jobs.subscribedIDs, body)
+	}
+}
+
+func TestSubscriptionMutationsWithoutHtmxRedirect(t *testing.T) {
+	fetcher := &fakeFetcher{
+		episodes:       []tver.Episode{{ID: "ep1", SeriesID: "sr1", SeriesTitle: "番組", Duration: 200}},
+		seriesEpisodes: []tver.Episode{{ID: "ep1", SeriesID: "sr1", SeriesTitle: "番組", Duration: 200}},
+	}
+	jobs := &fakeJobStore{}
+	handler := newTestHandlerWithStore(fetcher, jobs, nil)
+	getPage(handler, "/")
+	form := url.Values{"genre": {"drama"}, "episode_id": {"ep1"}}
+	request := httptest.NewRequest(http.MethodPost, "/subscriptions/register", strings.NewReader(form.Encode()))
+	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	response := httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusSeeOther || response.Header().Get("Location") != "/?genre=drama" {
+		t.Fatalf("通常登録 POST: status=%d Location=%q", response.Code, response.Header().Get("Location"))
+	}
+	request = httptest.NewRequest(http.MethodPost, "/subscriptions/sr1/pause", nil)
+	response = httptest.NewRecorder()
+	handler.ServeHTTP(response, request)
+	if response.Code != http.StatusSeeOther || response.Header().Get("Location") != "/subscriptions" || jobs.subscriptions["sr1"].Enabled {
+		t.Fatalf("通常操作 POST: status=%d Location=%q subscription=%+v", response.Code, response.Header().Get("Location"), jobs.subscriptions["sr1"])
+	}
+}
+
+func TestSubscriptionsPagePauseResumeDeleteAndEscaping(t *testing.T) {
+	checked := time.Date(2026, 10, 4, 2, 30, 0, 0, time.UTC)
+	failedAt := time.Date(2026, 10, 4, 3, 45, 0, 0, time.UTC)
+	checkError := `<script>alert("error")</script> token=[REDACTED]`
+	jobs := &fakeJobStore{subscriptions: map[string]store.Subscription{
+		"sr1": {SeriesID: "sr1", SeriesTitle: `<script>alert(1)</script>`, Enabled: true,
+			CreatedAt: time.Date(2026, 10, 3, 0, 0, 0, 0, time.UTC), LastCheckedAt: &checked,
+			LastCheckErrorAt: &failedAt, LastCheckError: &checkError, JobCount: 3},
+		"sr2": {SeriesID: "sr2", SeriesTitle: "別番組", Enabled: false, JobCount: 0},
+	}}
+	handler := newTestHandlerWithStore(&fakeFetcher{}, jobs, nil)
+	page := getPage(handler, "/subscriptions")
+	if page.Code != http.StatusOK {
+		t.Fatalf("登録番組ページ: %d", page.Code)
+	}
+	body := page.Body.String()
+	for _, want := range []string{"&lt;script&gt;", "登録日時: 2026-10-03 09:00 JST", "最終確認: 2026-10-04 11:30 JST", "最終確認: 未確認", "最後の確認エラー（2026-10-04 12:45 JST）", `&lt;script&gt;alert(&#34;error&#34;)&lt;/script&gt; token=[REDACTED]`, "関連ジョブ: 3件", "有効", "一時停止", `hx-confirm="番組の登録を解除しますか？"`} {
+		if !strings.Contains(body, want) {
+			t.Errorf("登録番組の情報 %q がない", want)
+		}
+	}
+	if strings.Contains(body, `<script>`) {
+		t.Fatal("番組名または確認エラーがエスケープされていない")
+	}
+	paused := postForm(handler, "/subscriptions/sr1/pause", nil)
+	if paused.Code != http.StatusOK || jobs.subscriptions["sr1"].Enabled || !strings.Contains(paused.Body.String(), `action="/subscriptions/sr1/resume"`) || strings.Contains(paused.Body.String(), "<html") {
+		t.Fatalf("一時停止: %d %s", paused.Code, paused.Body.String())
+	}
+	resumed := postForm(handler, "/subscriptions/sr1/resume", nil)
+	if resumed.Code != http.StatusOK || !jobs.subscriptions["sr1"].Enabled || !strings.Contains(resumed.Body.String(), `action="/subscriptions/sr1/pause"`) {
+		t.Fatalf("再開: %d %s", resumed.Code, resumed.Body.String())
+	}
+	deleted := postForm(handler, "/subscriptions/sr1/delete", nil)
+	if deleted.Code != http.StatusOK || len(jobs.subscriptions) != 1 || strings.Contains(deleted.Body.String(), "&lt;script&gt;") {
+		t.Fatalf("解除: %d %s", deleted.Code, deleted.Body.String())
+	}
+	if got := postForm(handler, "/subscriptions/sr1/delete", nil).Code; got != http.StatusNotFound {
+		t.Fatalf("存在しない番組の解除: %d", got)
+	}
+}

internal/web/templates/layout.html

@@ -0,0 +1,42 @@
+{{define "layout"}}<!doctype html>
+<html lang="ja">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>{{.Title}} | TVer</title>
+  <link rel="stylesheet" href="/static/app.css">
+  <script src="/static/htmx-2.0.11.min.js" defer></script>
+</head>
+<body>
+  <header>
+    <strong>TVer</strong>
+    <nav aria-label="メイン" hx-boost="true">
+      <a href="/">新着</a>
+      <a href="/queue">待ち行列</a>
+      <a href="/subscriptions">登録番組</a>
+      <a href="/library">ライブラリ</a>
+    </nav>
+  </header>
+  <main>
+    {{if .Newer}}
+      {{template "newer_page" .Newer}}
+    {{else if .Queue}}
+      {{template "queue_page" .Queue}}
+    {{else if .Subscriptions}}
+      {{template "subscriptions_page" .Subscriptions}}
+    {{else if .Library}}
+      {{template "library_page" .Library}}
+    {{else if .Series}}
+      {{template "series_page" .Series}}
+    {{else if .Video}}
+      {{template "video_page" .Video}}
+    {{else if .DeleteConfirm}}
+      {{template "delete_confirm_page" .DeleteConfirm}}
+    {{else if .DeleteResult}}
+      {{template "delete_result_page" .DeleteResult}}
+    {{else}}
+      <h1>{{.Title}}</h1>
+    {{end}}
+  </main>
+</body>
+</html>{{end}}

internal/web/templates/library.html

@@ -0,0 +1,115 @@
+{{define "library_page"}}
+<h1>ライブラリ</h1>
+{{if .Series}}
+  <p>{{.SeriesCount}}番組・{{.EpisodeCount}}本・{{.TotalSizeText}}</p>
+  <form action="/library/delete/confirm" method="post">
+  <div class="episode-grid library-select-grid">
+    {{range .Series}}
+      <article class="episode-card">
+        <label class="library-selection"><input type="checkbox" name="series_id" value="{{.SeriesID}}"> この番組を選択</label>
+        <a href="/library/series/{{.SeriesID}}">
+          <div class="library-card-image">
+            <img src="{{.ThumbnailURL}}" alt="" loading="lazy">
+            <span class="episode-count-badge">{{.EpisodeCount}}本</span>
+          </div>
+          <div class="episode-copy">
+            <h2>{{.SeriesTitle}} {{if .Subscribed}}<span class="subscription-badge">登録中</span>{{end}}</h2>
+            <p>放送局: {{.BroadcasterName}}</p>
+            <p>最新: {{.LatestTitle}}</p>
+            <p>最終完了: {{.LatestFinishedText}}</p>
+            <p>合計サイズ: {{.TotalSizeText}}</p>
+          </div>
+        </a>
+      </article>
+    {{end}}
+  </div>
+  <p><button type="submit">選択した番組を削除</button></p>
+  </form>
+{{else}}
+  <p>ダウンロード済みの動画はありません</p>
+{{end}}
+{{end}}
+
+{{define "series_page"}}
+<nav class="breadcrumbs" aria-label="パンくず"><a href="/library">ライブラリ</a><span aria-hidden="true">›</span><span>{{.SeriesTitle}}</span></nav>
+<h1>{{.SeriesTitle}} {{if .Subscribed}}<span class="subscription-badge">登録中</span>{{end}}</h1>
+<p>{{.BroadcasterName}}・{{.EpisodeCount}}本・{{.TotalSizeText}}</p>
+<p class="library-sort">並び順:
+  {{if eq .Sort "latest"}}<strong>完了が新しい順</strong>{{else}}<a href="/library/series/{{.SeriesID}}">完了が新しい順</a>{{end}}
+  ／
+  {{if eq .Sort "natural"}}<strong>話の順</strong>{{else}}<a href="/library/series/{{.SeriesID}}?sort=natural">話の順</a>{{end}}
+</p>
+<form action="/library/delete/confirm" method="post">
+<div class="library-episode-list">
+  {{range .Items}}
+    <div class="library-episode-select-row">
+      <label class="library-selection"><input type="checkbox" name="id" value="{{.ID}}"> 選択</label>
+      <a class="library-episode-row" href="/library/{{.ID}}">
+        <img src="{{.ThumbnailURL}}" alt="" loading="lazy">
+        <span class="library-episode-title">{{.Title}}</span>
+        <span>{{.FinishedAtText}}</span>
+        <span>{{.DurationText}}</span>
+        <span>{{.FileSizeText}}</span>
+      </a>
+    </div>
+  {{end}}
+</div>
+<p><button type="submit">選択した回を削除</button></p>
+</form>
+<form action="/library/delete/confirm" method="post">
+  <input type="hidden" name="series_id" value="{{.SeriesID}}">
+  <button type="submit">この番組をすべて削除</button>
+</form>
+{{end}}
+
+{{define "video_page"}}
+<nav class="breadcrumbs" aria-label="パンくず"><a href="/library">ライブラリ</a><span aria-hidden="true">›</span><a href="{{.SeriesURL}}">{{.SeriesTitle}}</a><span aria-hidden="true">›</span><span>{{.Title}}</span></nav>
+<h1>{{.SeriesTitle}}</h1>
+<h2>{{.Title}}</h2>
+<video controls preload="metadata" src="{{.VideoURL}}"></video>
+<p>放送局: {{.BroadcasterName}}／長さ: {{.DurationText}}／サイズ: {{.FileSizeText}}／完了日時: {{.FinishedAtText}}</p>
+<nav class="episode-navigation" aria-label="前後の回">
+  {{if .Previous}}<a href="/library/{{.Previous.ID}}">← 前の回: {{.Previous.Title}}</a>{{else}}<span aria-disabled="true">前の回はありません</span>{{end}}
+  {{if .Next}}<a href="/library/{{.Next.ID}}">次の回: {{.Next.Title}} →</a>{{else}}<span aria-disabled="true">次の回はありません</span>{{end}}
+</nav>
+<form action="/library/delete/confirm" method="post">
+  <input type="hidden" name="id" value="{{.ID}}">
+  <button type="submit">削除</button>
+</form>
+{{end}}
+
+{{define "delete_confirm_page"}}
+<nav class="breadcrumbs" aria-label="パンくず"><a href="/library">ライブラリ</a><span aria-hidden="true">›</span><span>削除確認</span></nav>
+<h1>動画の削除確認</h1>
+<p class="delete-warning">ファイルと記録を削除します。この操作は取り消せません。</p>
+<p>{{.Count}}本・合計{{.TotalSizeText}}</p>
+{{range .Groups}}
+  <section class="delete-group">
+    <h2>{{.SeriesTitle}}</h2>
+    <p>{{len .Items}}本・{{.TotalSizeText}}</p>
+    <ul>
+      {{range .Items}}<li>{{.Title}}（{{.FileSizeText}}）</li>{{end}}
+    </ul>
+  </section>
+{{end}}
+<form action="/library/delete" method="post">
+  {{range .IDs}}<input type="hidden" name="id" value="{{.}}">{{end}}
+  <button type="submit">削除を実行</button>
+  <a href="{{.CancelURL}}">取り消す</a>
+</form>
+{{end}}
+
+{{define "delete_result_page"}}
+<nav class="breadcrumbs" aria-label="パンくず"><a href="/library">ライブラリ</a><span aria-hidden="true">›</span><span>削除結果</span></nav>
+<h1>動画の削除結果</h1>
+<p>削除: {{.DeletedCount}}件／失敗: {{len .Failures}}件／対象外: {{.ExcludedCount}}件</p>
+{{if .Failures}}
+  <h2>失敗した回</h2>
+  <ul>{{range .Failures}}<li>{{.Title}}: {{.Reason}}</li>{{end}}</ul>
+{{end}}
+<p><a href="/library">ライブラリへ戻る</a></p>
+{{if .SeriesLinks}}
+  <h2>回が残っている番組</h2>
+  <ul>{{range .SeriesLinks}}<li><a href="/library/series/{{.SeriesID}}">{{.SeriesTitle}}</a></li>{{end}}</ul>
+{{end}}
+{{end}}

internal/web/templates/newer.html

@@ -0,0 +1,70 @@
+{{define "newer_page"}}
+<h1>新着</h1>
+<form id="newer-controls" action="/" method="get"
+      hx-get="/newer" hx-trigger="change, submit"
+      hx-target="#newer-results" hx-swap="outerHTML">
+  <label for="genre">ジャンル</label>
+  <select id="genre" name="genre">
+    <option value="drama" {{if eq .Genre "drama"}}selected{{end}}>ドラマ</option>
+    <option value="variety" {{if eq .Genre "variety"}}selected{{end}}>バラエティ</option>
+  </select>
+  <input type="hidden" name="hide_previews" value="0">
+  <label for="hide-previews">
+    <input id="hide-previews" type="checkbox" name="hide_previews" value="1" {{if .HidePreviews}}checked{{end}}>
+    予告を隠す
+  </label>
+  <button type="submit">表示</button>
+</form>
+{{template "newer_results" .}}
+{{end}}
+
+{{define "newer_results"}}
+<section id="newer-results" aria-label="新着一覧" aria-live="polite">
+  {{if .Failed}}
+    <p role="status">{{.ErrorText}}</p>
+  {{else if not .Episodes}}
+    <p>表示する新着はありません</p>
+  {{else}}
+    <div class="episode-grid">
+      {{range .Episodes}}
+        <article class="episode-card">
+          <a href="{{.URL}}">
+            <img src="{{.ThumbnailURL}}" alt="" loading="lazy">
+            <div class="episode-copy">
+              <h2>{{.SeriesTitle}}</h2>
+              <p>{{.Title}}</p>
+              <p>放送局: {{.BroadcasterName}}</p>
+              <p>長さ: {{.DurationMinutes}}分</p>
+              <p>放送日: {{.BroadcastDateLabel}}</p>
+              <p>配信終了: <time datetime="{{.EndAtISO}}">{{.EndAtText}}</time></p>
+            </div>
+          </a>
+          {{template "episode_action" .}}
+          {{template "subscription_action" .SubscriptionAction}}
+        </article>
+      {{end}}
+    </div>
+  {{end}}
+</section>
+{{end}}
+
+{{define "episode_action"}}
+<div class="episode-action">
+  {{if not .Status}}
+    <form action="/episodes/enqueue" method="post" hx-post="/episodes/enqueue" hx-target="closest .episode-action" hx-swap="outerHTML">
+      <input type="hidden" name="episode_id" value="{{.ID}}">
+      <input type="hidden" name="genre" value="{{.Genre}}">
+      <button type="submit">ダウンロード</button>
+    </form>
+  {{else}}
+    <span role="status">{{.StatusText}}</span>
+    {{if or (eq .Status "failed") (eq .Status "canceled")}}
+      <form action="/episodes/retry" method="post" hx-post="/episodes/retry" hx-target="closest .episode-action" hx-swap="outerHTML">
+        <input type="hidden" name="episode_id" value="{{.ID}}">
+        <input type="hidden" name="genre" value="{{.Genre}}">
+        <button type="submit">再試行</button>
+      </form>
+    {{end}}
+  {{end}}
+</div>
+{{end}}

internal/web/templates/queue.html

@@ -0,0 +1,59 @@
+{{define "queue_page"}}
+<h1>待ち行列</h1>
+{{template "queue_list" .}}
+{{end}}
+
+{{define "queue_list"}}
+<div id="queue-list" {{if .Poll}}hx-get="/queue/list" hx-trigger="every 5s" hx-target="this" hx-swap="outerHTML"{{end}}>
+  <section aria-label="ダウンロード中">
+    <h2>ダウンロード中</h2>
+    {{range .Running}}{{template "queue_job" .}}{{else}}<p>ありません</p>{{end}}
+  </section>
+  <section aria-label="待機中">
+    <h2>待機中</h2>
+    {{range .Queued}}{{template "queue_job" .}}{{else}}<p>ありません</p>{{end}}
+  </section>
+  <section aria-label="失敗">
+    <h2>失敗</h2>
+    {{range .Failed}}{{template "queue_job" .}}{{else}}<p>ありません</p>{{end}}
+  </section>
+  <section aria-label="取り消し">
+    <h2>取り消し</h2>
+    {{range .Canceled}}{{template "queue_job" .}}{{else}}<p>ありません</p>{{end}}
+  </section>
+  <section aria-label="完了">
+    <h2>完了（直近50件）</h2>
+    {{range .Succeeded}}{{template "queue_job" .}}{{else}}<p>ありません</p>{{end}}
+  </section>
+</div>
+{{end}}
+
+{{define "queue_job"}}
+<article class="queue-job">
+  <h3>{{.SeriesTitle}} — {{.Title}}</h3>
+  <p>放送局: {{.BroadcasterName}}／登録元: {{.SourceText}}／登録日時: {{.CreatedAtText}}</p>
+  {{if eq .Status "running"}}
+    <p>段階: {{if .PhaseText}}{{.PhaseText}}{{else}}準備中{{end}}
+      {{if .PercentText}}／{{.PercentText}}{{end}}
+      {{if .SpeedText}}／{{.SpeedText}}{{end}}
+      {{if .ETAText}}／{{.ETAText}}{{end}}
+      {{if .FragmentText}}／{{.FragmentText}}{{end}}</p>
+    <form action="/jobs/{{.ID}}/cancel" method="post" hx-post="/jobs/{{.ID}}/cancel" hx-target="#queue-list" hx-swap="outerHTML">
+      <button type="submit">取り消し</button>
+    </form>
+  {{end}}
+  {{if eq .Status "failed"}}
+    <p>失敗理由: {{.ErrorKindText}}</p>
+    {{if .ErrorMessage}}<details><summary>詳細</summary><pre>{{.ErrorMessage}}</pre></details>{{end}}
+  {{end}}
+  {{if eq .Status "queued"}}
+    <form action="/jobs/{{.ID}}/cancel" method="post" hx-post="/jobs/{{.ID}}/cancel" hx-target="#queue-list" hx-swap="outerHTML">
+      <button type="submit">取り消し</button>
+    </form>
+  {{else if or (eq .Status "failed") (eq .Status "canceled")}}
+    <form action="/jobs/{{.ID}}/retry" method="post" hx-post="/jobs/{{.ID}}/retry" hx-target="#queue-list" hx-swap="outerHTML">
+      <button type="submit">再試行</button>
+    </form>
+  {{end}}
+</article>
+{{end}}

internal/web/templates/subscriptions.html

@@ -0,0 +1,81 @@
+{{define "subscription_action"}}
+<div class="subscription-action">
+  {{if .Subscribed}}
+    <span role="status">登録済み</span>
+  {{else if .Choosing}}
+    {{if .ErrorText}}<p role="alert">{{.ErrorText}}</p>{{end}}
+    <form action="/subscriptions/register" method="post" hx-post="/subscriptions/register" hx-target="closest .subscription-action" hx-swap="outerHTML">
+      <input type="hidden" name="episode_id" value="{{.ID}}">
+      <input type="hidden" name="genre" value="{{.Genre}}">
+      <label><input type="checkbox" name="download_existing" value="1" {{if .DownloadExisting}}checked{{end}}>公開中の回もダウンロードする</label>
+      <button type="submit">登録</button>
+    </form>
+  {{else}}
+    <button type="button" hx-get="/subscriptions/choice?genre={{.Genre}}&amp;episode_id={{.ID}}" hx-target="closest .subscription-action" hx-swap="outerHTML">番組を登録</button>
+  {{end}}
+</div>
+{{end}}
+
+{{define "subscriptions_page"}}
+<h1>登録番組</h1>
+<section class="subscription-url-entry">
+  <h2>番組URLから登録</h2>
+  <form action="/subscriptions/from-url/confirm" method="post" hx-post="/subscriptions/from-url/confirm" hx-target="#subscription-url-result" hx-swap="outerHTML">
+    <label>番組URL <input id="subscription-url-input" type="url" name="series_url" placeholder="https://tver.jp/series/…" required></label>
+    <button type="submit">確認</button>
+  </form>
+  <div id="subscription-url-result"></div>
+</section>
+{{template "subscriptions_list" .}}
+{{end}}
+
+{{define "subscription_url_result"}}
+<div id="subscription-url-result">
+  {{if .ErrorText}}
+    <p role="alert">{{.ErrorText}}</p>
+  {{else if .SeriesID}}
+    <h3>{{.Title}}</h3>
+    <p>番組ID: {{.SeriesID}}</p>
+    {{if eq .EpisodeCount 0}}<p>公開中の回はありません</p>{{else}}<p>公開中の回数: {{.EpisodeCount}}件</p>{{end}}
+    {{if .Subscribed}}
+      <p role="status">登録済み</p>
+      <button type="button" hx-get="/subscriptions/from-url/cancel" hx-target="#subscription-url-result" hx-swap="outerHTML">キャンセル</button>
+    {{else}}
+      <form action="/subscriptions/from-url/register" method="post" hx-post="/subscriptions/from-url/register" hx-target="#subscription-url-result" hx-swap="outerHTML">
+        <input type="hidden" name="series_id" value="{{.SeriesID}}">
+        <label><input type="checkbox" name="download_existing" value="1">公開中の回もダウンロードする</label>
+        <button type="submit">登録</button>
+        <button type="button" hx-get="/subscriptions/from-url/cancel" hx-target="#subscription-url-result" hx-swap="outerHTML">キャンセル</button>
+      </form>
+    {{end}}
+  {{end}}
+</div>
+{{end}}
+
+{{define "subscription_url_registered"}}
+<div id="subscription-url-result"><p role="status">登録済み</p></div>
+<input id="subscription-url-input" type="url" name="series_url" placeholder="https://tver.jp/series/…" required hx-swap-oob="outerHTML">
+{{template "subscriptions_list" .Subscriptions}}
+{{end}}
+
+{{define "subscriptions_list"}}
+<div id="subscriptions-list" {{if .OutOfBand}}hx-swap-oob="outerHTML"{{end}}>
+  {{range .Items}}
+    <article class="subscription-item">
+      <h2>{{.Title}}</h2>
+      <p>登録日時: {{.CreatedAtText}}／最終確認: {{.LastCheckedText}}／状態: {{if .Enabled}}有効{{else}}一時停止{{end}}／関連ジョブ: {{.Jobs}}件</p>
+      {{if .CheckErrorText}}
+        <details class="error"><summary>最後の確認エラー（{{.CheckErrorAtText}}）</summary><p>{{.CheckErrorText}}</p></details>
+      {{end}}
+      {{if .Enabled}}
+        <form action="/subscriptions/{{.ID}}/pause" method="post" hx-post="/subscriptions/{{.ID}}/pause" hx-target="#subscriptions-list" hx-swap="outerHTML"><button type="submit">一時停止</button></form>
+      {{else}}
+        <form action="/subscriptions/{{.ID}}/resume" method="post" hx-post="/subscriptions/{{.ID}}/resume" hx-target="#subscriptions-list" hx-swap="outerHTML"><button type="submit">再開</button></form>
+      {{end}}
+      <form action="/subscriptions/{{.ID}}/delete" method="post" hx-post="/subscriptions/{{.ID}}/delete" hx-target="#subscriptions-list" hx-swap="outerHTML" hx-confirm="番組の登録を解除しますか？"><button type="submit">解除</button></form>
+    </article>
+  {{else}}
+    <p>登録番組はありません</p>
+  {{end}}
+</div>
+{{end}}

internal/worker/progress.go

@@ -0,0 +1,81 @@
+package worker
+
+import (
+	"encoding/json"
+	"strings"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+)
+
+type outputEvent struct {
+	Event    string `json:"event"`
+	FormatID string `json:"format_id"`
+	Filepath string `json:"filepath"`
+	Progress struct {
+		DownloadedBytes    *float64 `json:"downloaded_bytes"`
+		TotalBytes         *float64 `json:"total_bytes"`
+		TotalBytesEstimate *float64 `json:"total_bytes_estimate"`
+		Speed              *float64 `json:"speed"`
+		ETA                *float64 `json:"eta"`
+		FragmentIndex      *float64 `json:"fragment_index"`
+		FragmentCount      *float64 `json:"fragment_count"`
+	} `json:"progress"`
+}
+
+func parseProgress(line string) (store.Progress, bool) {
+	var event outputEvent
+	if err := json.Unmarshal([]byte(line), &event); err != nil {
+		return store.Progress{}, false
+	}
+	phase := ""
+	switch event.Event {
+	case "download":
+		if strings.Contains(strings.ToLower(event.FormatID), "audio") {
+			phase = "audio"
+		} else {
+			phase = "video"
+		}
+	case "postprocess":
+		phase = "merging"
+	default:
+		return store.Progress{}, false
+	}
+	total := int64Pointer(event.Progress.TotalBytes)
+	estimate := false
+	if total == nil && event.Progress.TotalBytesEstimate != nil {
+		total = int64Pointer(event.Progress.TotalBytesEstimate)
+		estimate = true
+	}
+	var formatID *string
+	if event.FormatID != "" {
+		formatID = &event.FormatID
+	}
+	return store.Progress{Phase: phase, DownloadedBytes: int64Pointer(event.Progress.DownloadedBytes),
+		TotalBytes: total, TotalIsEstimate: estimate, SpeedBPS: event.Progress.Speed,
+		ETASeconds: event.Progress.ETA, FragmentIndex: int32Pointer(event.Progress.FragmentIndex),
+		FragmentCount: int32Pointer(event.Progress.FragmentCount), FormatID: formatID}, true
+}
+
+func int64Pointer(value *float64) *int64 {
+	if value == nil {
+		return nil
+	}
+	result := int64(*value)
+	return &result
+}
+
+func int32Pointer(value *float64) *int32 {
+	if value == nil {
+		return nil
+	}
+	result := int32(*value)
+	return &result
+}
+
+func parseAfterMove(line string) (string, bool) {
+	var event outputEvent
+	if err := json.Unmarshal([]byte(line), &event); err != nil || event.Event != "after_move" || event.Filepath == "" {
+		return "", false
+	}
+	return event.Filepath, true
+}

internal/worker/progress_test.go

@@ -0,0 +1,27 @@
+package worker
+
+import "testing"
+
+func TestParseProgress(t *testing.T) {
+	video, ok := parseProgress(`{"event":"download","format_id":"hls-698-1","progress":{"downloaded_bytes":25,"total_bytes_estimate":100.0,"speed":10.5,"eta":3,"fragment_index":1,"fragment_count":4}}`)
+	if !ok || video.Phase != "video" || video.DownloadedBytes == nil || *video.DownloadedBytes != 25 || video.TotalBytes == nil || *video.TotalBytes != 100 || !video.TotalIsEstimate || video.SpeedBPS == nil || *video.SpeedBPS != 10.5 || video.ETASeconds == nil || *video.ETASeconds != 3 || video.FragmentIndex == nil || *video.FragmentIndex != 1 || video.FragmentCount == nil || *video.FragmentCount != 4 || video.FormatID == nil || *video.FormatID != "hls-698-1" {
+		t.Fatalf("映像進捗: %+v ok=%v", video, ok)
+	}
+	audio, ok := parseProgress(`{"event":"download","format_id":"hls-ts_AUDIO-0_2","progress":{"downloaded_bytes":50,"total_bytes":50}}`)
+	if !ok || audio.Phase != "audio" || audio.TotalIsEstimate || audio.TotalBytes == nil || *audio.TotalBytes != 50 {
+		t.Fatalf("音声進捗: %+v ok=%v", audio, ok)
+	}
+	merging, ok := parseProgress(`{"event":"postprocess","progress":{"status":"started","postprocessor":"Merger"}}`)
+	if !ok || merging.Phase != "merging" {
+		t.Fatalf("結合進捗: %+v ok=%v", merging, ok)
+	}
+	path, ok := parseAfterMove(`{"event":"after_move","filepath":"/videos/incoming/ep.mp4"}`)
+	if !ok || path != "/videos/incoming/ep.mp4" {
+		t.Fatalf("移動後パス: %q ok=%v", path, ok)
+	}
+	for _, invalid := range []string{"noise", `{"event":"other"}`} {
+		if _, ok := parseProgress(invalid); ok {
+			t.Errorf("不正な進捗を許した: %q", invalid)
+		}
+	}
+}

internal/worker/runner.go

@@ -0,0 +1,504 @@
+package worker
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+	"sync"
+	"syscall"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/media"
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"github.com/jackc/pgx/v5"
+)
+
+var (
+	errCanceled      = errors.New("job canceled")
+	errShutdown      = errors.New("worker shutting down")
+	errInvalidOutput = errors.New("invalid output")
+	headerSecretRE   = regexp.MustCompile(`(?im)(authorization|cookie)([=:][ \t]*)([^\r\n]+)`)
+	paramSecretRE    = regexp.MustCompile(`(?i)(token|platform_uid|platform_token)([=:][[:space:]]*)([^&[:space:]]+)`)
+)
+
+type JobStore interface {
+	ClaimNext(context.Context) (store.Job, error)
+	UpdateProgress(context.Context, int64, store.Progress) error
+	Heartbeat(context.Context, int64) error
+	GetJob(context.Context, int64) (store.Job, error)
+	Complete(context.Context, int64, string, int64) error
+	Fail(context.Context, int64, string, string) error
+	RequeueRunning(context.Context, int64) error
+}
+
+type Config struct {
+	VideoDir          string
+	YTDLPPath         string
+	FFprobePath       string
+	Concurrency       int
+	PollInterval      time.Duration
+	ProgressInterval  time.Duration
+	HeartbeatInterval time.Duration
+	CancelInterval    time.Duration
+}
+
+type Runner struct {
+	store  JobStore
+	config Config
+	logger *log.Logger
+}
+
+type cappedBuffer struct {
+	buffer bytes.Buffer
+	limit  int
+}
+
+func (b *cappedBuffer) Write(p []byte) (int, error) {
+	written := len(p)
+	remaining := b.limit - b.buffer.Len()
+	if remaining > 0 {
+		if remaining < len(p) {
+			p = p[:remaining]
+		}
+		_, _ = b.buffer.Write(p)
+	}
+	return written, nil
+}
+
+func (b *cappedBuffer) String() string { return b.buffer.String() }
+
+func scanLines(reader io.Reader, capture *cappedBuffer) <-chan string {
+	lines := make(chan string)
+	go func() {
+		defer close(lines)
+		scanner := bufio.NewScanner(reader)
+		scanner.Buffer(make([]byte, 4096), 1<<20)
+		for scanner.Scan() {
+			line := scanner.Text()
+			if capture != nil {
+				_, _ = capture.Write([]byte(line + "\n"))
+			}
+			lines <- line
+		}
+	}()
+	return lines
+}
+
+func New(jobs JobStore, config Config, logger *log.Logger) (*Runner, error) {
+	if config.VideoDir == "" {
+		config.VideoDir = "/videos"
+	}
+	if config.YTDLPPath == "" {
+		config.YTDLPPath = "yt-dlp"
+	}
+	if config.FFprobePath == "" {
+		config.FFprobePath = "ffprobe"
+	}
+	if config.Concurrency == 0 {
+		config.Concurrency = 1
+	}
+	if config.Concurrency < 1 || config.Concurrency > 2 {
+		return nil, errors.New("worker concurrency must be 1 or 2")
+	}
+	if config.PollInterval <= 0 {
+		config.PollInterval = time.Second
+	}
+	if config.ProgressInterval <= 0 {
+		config.ProgressInterval = time.Second
+	}
+	if config.HeartbeatInterval <= 0 {
+		config.HeartbeatInterval = 5 * time.Second
+	}
+	if config.CancelInterval <= 0 {
+		config.CancelInterval = 500 * time.Millisecond
+	}
+	if logger == nil {
+		logger = log.Default()
+	}
+	return &Runner{store: jobs, config: config, logger: logger}, nil
+}
+
+func (r *Runner) Run(ctx context.Context) error {
+	sem := make(chan struct{}, r.config.Concurrency)
+	var wg sync.WaitGroup
+	ticker := time.NewTicker(r.config.PollInterval)
+	defer ticker.Stop()
+	for {
+		for len(sem) < cap(sem) && ctx.Err() == nil {
+			job, err := r.store.ClaimNext(ctx)
+			if errors.Is(err, pgx.ErrNoRows) {
+				break
+			}
+			if err != nil {
+				r.logger.Printf("ジョブ取得に失敗: %v", err)
+				break
+			}
+			sem <- struct{}{}
+			wg.Add(1)
+			go func() {
+				defer wg.Done()
+				defer func() { <-sem }()
+				r.ProcessJob(ctx, job)
+			}()
+		}
+		select {
+		case <-ctx.Done():
+			wg.Wait()
+			return nil
+		case <-ticker.C:
+		}
+	}
+}
+
+func (r *Runner) ProcessJob(ctx context.Context, job store.Job) {
+	workDir := filepath.Join(r.config.VideoDir, ".incoming", strconv.FormatInt(job.ID, 10))
+	if err := os.RemoveAll(workDir); err != nil {
+		r.fail(job.ID, "unknown", fmt.Sprintf("作業ディレクトリを初期化できません: %v", err))
+		return
+	}
+	if err := os.MkdirAll(workDir, 0o755); err != nil {
+		r.fail(job.ID, "unknown", fmt.Sprintf("作業ディレクトリを作成できません: %v", err))
+		return
+	}
+	defer os.RemoveAll(workDir)
+	relative, err := media.RelativeVideoPath(job.SeriesTitle, job.Title, job.EpisodeID)
+	if err != nil {
+		r.failIfRunning(job.ID, "invalid_output", redact(err.Error()))
+		return
+	}
+
+	downloaded, stderr, err := r.download(ctx, job, workDir)
+	if errors.Is(err, errShutdown) {
+		r.requeue(job.ID)
+		return
+	}
+	if errors.Is(err, errCanceled) {
+		return
+	}
+	if err != nil {
+		message := redact(stderr)
+		if message == "" {
+			message = redact(err.Error())
+		}
+		kind := classifyFailure(message)
+		if errors.Is(err, errInvalidOutput) {
+			kind = "invalid_output"
+		}
+		r.failIfRunning(job.ID, kind, message)
+		return
+	}
+	if r.canceled(job.ID) {
+		return
+	}
+	if err := r.probe(ctx, downloaded); err != nil {
+		if ctx.Err() != nil {
+			r.requeue(job.ID)
+			return
+		}
+		r.failIfRunning(job.ID, "invalid_output", redact(err.Error()))
+		return
+	}
+	if r.canceled(job.ID) {
+		return
+	}
+	if err := r.store.UpdateProgress(ctx, job.ID, store.Progress{Phase: "moving"}); err != nil {
+		if r.canceled(job.ID) {
+			return
+		}
+		r.failIfRunning(job.ID, "unknown", "移動状態を記録できません: "+err.Error())
+		return
+	}
+	destination := filepath.Join(r.config.VideoDir, relative)
+	if err := os.MkdirAll(filepath.Dir(destination), 0o755); err != nil {
+		r.failIfRunning(job.ID, "unknown", "保存先を作成できません: "+err.Error())
+		return
+	}
+	if err := os.Rename(downloaded, destination); err != nil {
+		r.failIfRunning(job.ID, "unknown", "動画を保存先へ移動できません: "+err.Error())
+		return
+	}
+	info, err := os.Stat(destination)
+	if err != nil {
+		r.failIfRunning(job.ID, "unknown", "保存後の動画を確認できません: "+err.Error())
+		return
+	}
+	if err := r.store.Complete(ctx, job.ID, filepath.ToSlash(relative), info.Size()); err != nil {
+		if r.canceled(job.ID) {
+			if removeErr := os.Remove(destination); removeErr != nil && !errors.Is(removeErr, os.ErrNotExist) {
+				r.logger.Printf("取り消されたジョブ %d の保存済みファイル削除に失敗: %v", job.ID, removeErr)
+			}
+			return
+		}
+		r.logger.Printf("ジョブ %d の完了記録に失敗: %v", job.ID, err)
+	}
+}
+
+func (r *Runner) download(ctx context.Context, job store.Job, workDir string) (string, string, error) {
+	output := filepath.Join(workDir, "%(id)s.%(ext)s")
+	args := []string{"--no-playlist", "--no-simulate", "--quiet", "--progress", "--newline",
+		"--continue", "--retries", "0", "--fragment-retries", "0", "--extractor-retries", "0",
+		"-f", "bv*[vcodec^=avc1]+ba/b", "--merge-output-format", "mp4",
+		"--progress-template", `download:{"event":"download","format_id":%(info.format_id)j,"progress":%(progress)j}`,
+		"--progress-template", `postprocess:{"event":"postprocess","progress":%(progress)j}`,
+		"--print", `after_move:{"event":"after_move","filepath":%(filepath)j}`, "-o", output,
+		"https://tver.jp/episodes/" + job.EpisodeID}
+	cmd := exec.Command(r.config.YTDLPPath, args...)
+	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		return "", "", err
+	}
+	stderrPipe, err := cmd.StderrPipe()
+	if err != nil {
+		return "", "", err
+	}
+	if err := cmd.Start(); err != nil {
+		return "", "", err
+	}
+	stderr := cappedBuffer{limit: 64 << 10}
+	stdoutLines := scanLines(stdout, nil)
+	stderrLines := scanLines(stderrPipe, &stderr)
+	waited := make(chan error, 1)
+	go func() { waited <- cmd.Wait() }()
+	heartbeat := time.NewTicker(r.config.HeartbeatInterval)
+	cancelCheck := time.NewTicker(r.config.CancelInterval)
+	defer heartbeat.Stop()
+	defer cancelCheck.Stop()
+	_ = r.store.Heartbeat(ctx, job.ID)
+	var afterMove string
+	var pending *store.Progress
+	nextProgress := time.Time{}
+	lastPhase := ""
+	recordProgress := func(progress store.Progress) {
+		pending = &progress
+		now := time.Now()
+		if progress.Phase != lastPhase || now.After(nextProgress) {
+			_ = r.store.UpdateProgress(ctx, job.ID, progress)
+			nextProgress = now.Add(r.config.ProgressInterval)
+			lastPhase = progress.Phase
+			pending = nil
+		}
+	}
+	stopping := ""
+	var forceKill <-chan time.Time
+	ctxDone := ctx.Done()
+	waitComplete := false
+	var waitErr error
+	for {
+		if waitComplete && stdoutLines == nil && stderrLines == nil {
+			if pending != nil && stopping == "" {
+				updateCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+				_ = r.store.UpdateProgress(updateCtx, job.ID, *pending)
+				cancel()
+			}
+			if stopping == "canceled" {
+				return "", stderr.String(), errCanceled
+			}
+			if stopping == "shutdown" {
+				return "", stderr.String(), errShutdown
+			}
+			if waitErr != nil {
+				r.logger.Printf("yt-dlp ジョブ %d 失敗: %s", job.ID, redact(stderr.String()))
+				return "", stderr.String(), waitErr
+			}
+			path, err := pathInside(workDir, afterMove)
+			if err != nil {
+				return "", stderr.String(), err
+			}
+			return path, stderr.String(), nil
+		}
+		select {
+		case line, ok := <-stdoutLines:
+			if !ok {
+				stdoutLines = nil
+				continue
+			}
+			if path, ok := parseAfterMove(line); ok {
+				afterMove = path
+				continue
+			}
+			if progress, ok := parseProgress(line); ok {
+				recordProgress(progress)
+			}
+		case line, ok := <-stderrLines:
+			if !ok {
+				stderrLines = nil
+				continue
+			}
+			if progress, ok := parseProgress(line); ok {
+				recordProgress(progress)
+			}
+		case <-heartbeat.C:
+			_ = r.store.Heartbeat(ctx, job.ID)
+		case <-cancelCheck.C:
+			if r.canceled(job.ID) && stopping == "" {
+				stopping = "canceled"
+				if !waitComplete {
+					stopProcessGroup(cmd)
+					forceKill = time.After(2 * time.Second)
+				}
+			}
+		case <-ctxDone:
+			if stopping == "" {
+				stopping = "shutdown"
+				if !waitComplete {
+					stopProcessGroup(cmd)
+					forceKill = time.After(2 * time.Second)
+				}
+			}
+			ctxDone = nil
+		case <-forceKill:
+			_ = syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL)
+			forceKill = nil
+		case waitErr = <-waited:
+			waitComplete = true
+			waited = nil
+			forceKill = nil
+		}
+	}
+}
+
+func stopProcessGroup(cmd *exec.Cmd) {
+	if cmd.Process == nil {
+		return
+	}
+	_ = syscall.Kill(-cmd.Process.Pid, syscall.SIGTERM)
+}
+
+func pathInside(root, candidate string) (string, error) {
+	if candidate == "" {
+		return "", errors.New("yt-dlp did not report after_move filepath")
+	}
+	rootAbs, err := filepath.Abs(root)
+	if err != nil {
+		return "", err
+	}
+	candidateAbs, err := filepath.Abs(candidate)
+	if err != nil {
+		return "", err
+	}
+	rel, err := filepath.Rel(rootAbs, candidateAbs)
+	if err != nil || rel == ".." || strings.HasPrefix(rel, ".."+string(filepath.Separator)) {
+		return "", fmt.Errorf("%w: yt-dlp filepath leaves working directory", errInvalidOutput)
+	}
+	info, err := os.Lstat(candidateAbs)
+	if err != nil {
+		return "", fmt.Errorf("%w: yt-dlp output file is missing: %v", errInvalidOutput, err)
+	}
+	if !info.Mode().IsRegular() {
+		return "", fmt.Errorf("%w: yt-dlp output is not a regular file", errInvalidOutput)
+	}
+	rootReal, err := filepath.EvalSymlinks(rootAbs)
+	if err != nil {
+		return "", fmt.Errorf("%w: resolve working directory: %v", errInvalidOutput, err)
+	}
+	candidateReal, err := filepath.EvalSymlinks(candidateAbs)
+	if err != nil {
+		return "", fmt.Errorf("%w: resolve yt-dlp output: %v", errInvalidOutput, err)
+	}
+	realRelative, err := filepath.Rel(rootReal, candidateReal)
+	if err != nil || realRelative == ".." || strings.HasPrefix(realRelative, ".."+string(filepath.Separator)) {
+		return "", fmt.Errorf("%w: yt-dlp output resolves outside working directory", errInvalidOutput)
+	}
+	return candidateAbs, nil
+}
+
+func (r *Runner) probe(ctx context.Context, path string) error {
+	cmd := exec.CommandContext(ctx, r.config.FFprobePath, "-v", "error", "-show_entries",
+		"format=format_name", "-show_entries", "stream=codec_type,codec_name", "-of", "json", path)
+	output, err := cmd.Output()
+	if err != nil {
+		return fmt.Errorf("ffprobe failed: %w", err)
+	}
+	var result struct {
+		Format struct {
+			FormatName string `json:"format_name"`
+		} `json:"format"`
+		Streams []struct {
+			CodecType string `json:"codec_type"`
+			CodecName string `json:"codec_name"`
+		} `json:"streams"`
+	}
+	if err := json.Unmarshal(output, &result); err != nil {
+		return fmt.Errorf("ffprobe output is not JSON: %w", err)
+	}
+	video, audio := false, false
+	for _, stream := range result.Streams {
+		video = video || stream.CodecType == "video" && stream.CodecName == "h264"
+		audio = audio || stream.CodecType == "audio" && stream.CodecName == "aac"
+	}
+	if !strings.Contains(result.Format.FormatName, "mp4") || !video || !audio {
+		return fmt.Errorf("expected MP4 with H.264 and AAC, got format=%s video=%t audio=%t", result.Format.FormatName, video, audio)
+	}
+	return nil
+}
+
+func (r *Runner) canceled(id int64) bool {
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+	job, err := r.store.GetJob(ctx, id)
+	return err == nil && job.Status == "canceled"
+}
+
+func (r *Runner) failIfRunning(id int64, kind, message string) {
+	if r.canceled(id) {
+		return
+	}
+	r.fail(id, kind, message)
+}
+
+func (r *Runner) fail(id int64, kind, message string) {
+	if len(message) > 8192 {
+		message = message[:8192]
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := r.store.Fail(ctx, id, kind, message); err != nil {
+		r.logger.Printf("ジョブ %d の失敗記録に失敗: %v", id, err)
+	}
+}
+
+func (r *Runner) requeue(id int64) {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := r.store.RequeueRunning(ctx, id); err != nil && !errors.Is(err, store.ErrInvalidTransition) {
+		r.logger.Printf("ジョブ %d の待機中への復帰に失敗: %v", id, err)
+	}
+}
+
+func classifyFailure(message string) string {
+	lower := strings.ToLower(message)
+	for _, test := range []struct {
+		kind     string
+		patterns []string
+	}{
+		{"drm", []string{"drm", "digital rights management", "protected by"}},
+		{"geo", []string{"geo-restricted", "not available in your country", "not available from your location", "geo restriction", "region restriction", "geographic restriction"}},
+		{"network", []string{"network", "connection", "timed out", "temporary failure", "unable to download", "proxy error", "http error 5"}},
+		{"unavailable", []string{"media_not_found", "video unavailable", "not available", "no longer available", "http error 404", "episode does not exist"}},
+		{"extract", []string{"extractor error", "unable to extract", "unsupported url", "no video formats", "after_move", "output file is missing"}},
+	} {
+		for _, pattern := range test.patterns {
+			if strings.Contains(lower, pattern) {
+				return test.kind
+			}
+		}
+	}
+	return "unknown"
+}
+
+func redact(message string) string {
+	message = headerSecretRE.ReplaceAllString(message, "$1$2[REDACTED]")
+	return strings.TrimSpace(paramSecretRE.ReplaceAllString(message, "$1$2[REDACTED]"))
+}

internal/worker/runner_test.go

@@ -0,0 +1,678 @@
+package worker
+
+import (
+	"context"
+	"errors"
+	"io"
+	"log"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/media"
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"github.com/jackc/pgx/v5"
+)
+
+type fakeStore struct {
+	mu                        sync.Mutex
+	job                       store.Job
+	progress                  []store.Progress
+	heartbeats                int
+	completed                 bool
+	completePath              string
+	completeSize              int64
+	failedKind, failedMessage string
+	requeued                  bool
+	claimed                   bool
+}
+
+type queueStore struct {
+	mu          sync.Mutex
+	jobs        []store.Job
+	claimCounts map[int64]int
+	active      int
+	maxActive   int
+}
+
+func (f *queueStore) ClaimNext(context.Context) (store.Job, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	for i := range f.jobs {
+		if f.jobs[i].Status != "queued" {
+			continue
+		}
+		f.jobs[i].Status = "running"
+		f.claimCounts[f.jobs[i].ID]++
+		f.active++
+		if f.active > f.maxActive {
+			f.maxActive = f.active
+		}
+		return f.jobs[i], nil
+	}
+	return store.Job{}, pgx.ErrNoRows
+}
+
+func (f *queueStore) UpdateProgress(_ context.Context, id int64, _ store.Progress) error {
+	return f.requireRunning(id)
+}
+
+func (f *queueStore) Heartbeat(_ context.Context, id int64) error {
+	return f.requireRunning(id)
+}
+
+func (f *queueStore) requireRunning(id int64) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	for i := range f.jobs {
+		if f.jobs[i].ID == id && f.jobs[i].Status == "running" {
+			return nil
+		}
+	}
+	return store.ErrInvalidTransition
+}
+
+func (f *queueStore) GetJob(_ context.Context, id int64) (store.Job, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	for _, job := range f.jobs {
+		if job.ID == id {
+			return job, nil
+		}
+	}
+	return store.Job{}, pgx.ErrNoRows
+}
+
+func (f *queueStore) Complete(_ context.Context, id int64, _ string, _ int64) error {
+	return f.finish(id, "succeeded")
+}
+
+func (f *queueStore) Fail(_ context.Context, id int64, _, _ string) error {
+	return f.finish(id, "failed")
+}
+
+func (f *queueStore) RequeueRunning(_ context.Context, id int64) error {
+	return f.finish(id, "queued")
+}
+
+func (f *queueStore) finish(id int64, status string) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	for i := range f.jobs {
+		if f.jobs[i].ID == id && f.jobs[i].Status == "running" {
+			f.jobs[i].Status = status
+			f.active--
+			return nil
+		}
+	}
+	return store.ErrInvalidTransition
+}
+
+func (f *queueStore) state() ([]store.Job, map[int64]int, int) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	jobs := append([]store.Job(nil), f.jobs...)
+	counts := make(map[int64]int, len(f.claimCounts))
+	for id, count := range f.claimCounts {
+		counts[id] = count
+	}
+	return jobs, counts, f.maxActive
+}
+
+func (f *fakeStore) ClaimNext(context.Context) (store.Job, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.claimed || f.job.Status != "queued" {
+		return store.Job{}, pgx.ErrNoRows
+	}
+	f.claimed = true
+	f.job.Status = "running"
+	return f.job, nil
+}
+
+func (f *fakeStore) UpdateProgress(_ context.Context, _ int64, p store.Progress) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.job.Status != "running" {
+		return store.ErrInvalidTransition
+	}
+	f.progress = append(f.progress, p)
+	return nil
+}
+
+func (f *fakeStore) Heartbeat(context.Context, int64) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.job.Status != "running" {
+		return store.ErrInvalidTransition
+	}
+	f.heartbeats++
+	return nil
+}
+
+func (f *fakeStore) GetJob(context.Context, int64) (store.Job, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return f.job, nil
+}
+
+func (f *fakeStore) Complete(_ context.Context, _ int64, path string, size int64) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.job.Status != "running" {
+		return store.ErrInvalidTransition
+	}
+	f.job.Status = "succeeded"
+	f.completed, f.completePath, f.completeSize = true, path, size
+	return nil
+}
+
+func (f *fakeStore) Fail(_ context.Context, _ int64, kind, message string) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.job.Status != "running" {
+		return store.ErrInvalidTransition
+	}
+	f.job.Status = "failed"
+	f.failedKind, f.failedMessage = kind, message
+	return nil
+}
+
+func (f *fakeStore) RequeueRunning(context.Context, int64) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	if f.job.Status != "running" {
+		return store.ErrInvalidTransition
+	}
+	f.job.Status = "queued"
+	f.requeued = true
+	return nil
+}
+
+func (f *fakeStore) setStatus(status string) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.job.Status = status
+}
+
+func (f *fakeStore) heartbeatCount() int {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	return f.heartbeats
+}
+
+func testRunner(t *testing.T, jobs *fakeStore, videoDir string) *Runner {
+	t.Helper()
+	ytdlp := filepath.Join("testdata", "fake-yt-dlp.sh")
+	ffprobe := filepath.Join("testdata", "fake-ffprobe.sh")
+	for _, path := range []string{ytdlp, ffprobe} {
+		info, err := os.Stat(path)
+		if err != nil || info.Mode().Perm()&0o111 == 0 {
+			t.Fatalf("偽コマンドが実行可能ではありません: %s: %v", path, err)
+		}
+	}
+	runner, err := New(jobs, Config{VideoDir: videoDir, YTDLPPath: ytdlp, FFprobePath: ffprobe,
+		Concurrency: 1, PollInterval: 5 * time.Millisecond, ProgressInterval: time.Millisecond,
+		HeartbeatInterval: 10 * time.Millisecond, CancelInterval: 5 * time.Millisecond}, log.New(io.Discard, "", 0))
+	if err != nil {
+		t.Fatal(err)
+	}
+	return runner
+}
+
+func runningJob() store.Job {
+	return store.Job{ID: 7, EpisodeID: "ep123", SeriesTitle: "番組名", Title: "第1話", Status: "running"}
+}
+
+func relativeVideoPath(t *testing.T, seriesTitle, episodeTitle, episodeID string) string {
+	t.Helper()
+	path, err := media.RelativeVideoPath(seriesTitle, episodeTitle, episodeID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return path
+}
+
+func TestProcessJobDownloadsProbesMovesAndCleans(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "success")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	argsFile := filepath.Join(dir, "args")
+	t.Setenv("FAKE_ARGS_FILE", argsFile)
+	jobs := &fakeStore{job: runningJob()}
+	testRunner(t, jobs, dir).ProcessJob(context.Background(), jobs.job)
+	want := filepath.ToSlash(relativeVideoPath(t, "番組名", "第1話", "ep123"))
+	if !jobs.completed || jobs.completePath != want || jobs.completeSize == 0 {
+		t.Fatalf("complete: done=%v path=%q size=%d", jobs.completed, jobs.completePath, jobs.completeSize)
+	}
+	if _, err := os.Stat(filepath.Join(dir, filepath.FromSlash(want))); err != nil {
+		t.Fatalf("保存先: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(dir, ".incoming", "7")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("作業ディレクトリが残った: %v", err)
+	}
+	args, err := os.ReadFile(argsFile)
+	if err != nil {
+		t.Fatal(err)
+	}
+	argumentText := string(args)
+	for _, want := range []string{"--newline", "--no-playlist", "--no-simulate", "--quiet", "--progress", "--continue", "--merge-output-format", "bv*[vcodec^=avc1]+ba/b", `download:{"event":"download","format_id":%(info.format_id)j,"progress":%(progress)j}`, `postprocess:{"event":"postprocess","progress":%(progress)j}`, `after_move:{"event":"after_move","filepath":%(filepath)j}`, filepath.Join(dir, ".incoming", "7", "%(id)s.%(ext)s")} {
+		if !strings.Contains(argumentText, want) {
+			t.Errorf("yt-dlp 引数に %q がない: %s", want, argumentText)
+		}
+	}
+	if strings.Contains(argumentText, "番組名") || strings.Contains(argumentText, "第1話") {
+		t.Errorf("出力テンプレートに番組情報が入った: %s", argumentText)
+	}
+	phases := make(map[string]bool)
+	for _, progress := range jobs.progress {
+		phases[progress.Phase] = true
+	}
+	for _, phase := range []string{"video", "audio", "merging", "moving"} {
+		if !phases[phase] {
+			t.Errorf("進捗段階 %s がない: %+v", phase, jobs.progress)
+		}
+	}
+	if jobs.heartbeats < 2 {
+		t.Errorf("heartbeat が少ない: %d", jobs.heartbeats)
+	}
+}
+
+func TestProcessJobRejectsLongEpisodeIDAndCleans(t *testing.T) {
+	dir := t.TempDir()
+	argsFile := filepath.Join(dir, "yt-dlp-args")
+	t.Setenv("FAKE_ARGS_FILE", argsFile)
+	workDir := filepath.Join(dir, ".incoming", "7")
+	if err := os.MkdirAll(workDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(workDir, "stale"), []byte("stale"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	job := runningJob()
+	job.EpisodeID = strings.Repeat("i", 65)
+	jobs := &fakeStore{job: job}
+	testRunner(t, jobs, dir).ProcessJob(context.Background(), job)
+	if jobs.completed || jobs.failedKind != "invalid_output" || !strings.Contains(jobs.failedMessage, "64バイト以下") {
+		t.Fatalf("長いIDの失敗: kind=%q message=%q completed=%v", jobs.failedKind, jobs.failedMessage, jobs.completed)
+	}
+	if _, err := os.Stat(argsFile); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("yt-dlp が起動された: %v", err)
+	}
+	if _, err := os.Stat(workDir); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("作業ディレクトリが残った: %v", err)
+	}
+}
+
+func TestProcessJobKeepsPercentNamesOutOfYTDLPTemplate(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "success")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	argsFile := filepath.Join(dir, "args")
+	t.Setenv("FAKE_ARGS_FILE", argsFile)
+	job := runningJob()
+	job.SeriesTitle = "100%番組"
+	job.Title = "第%1話"
+	jobs := &fakeStore{job: job}
+	testRunner(t, jobs, dir).ProcessJob(context.Background(), job)
+	if !jobs.completed {
+		t.Fatalf("%% を含む番組を完了できなかった: %+v", jobs)
+	}
+	args, err := os.ReadFile(argsFile)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if strings.Contains(string(args), job.SeriesTitle) || strings.Contains(string(args), job.Title) {
+		t.Fatalf("番組情報が yt-dlp 引数に入った: %s", args)
+	}
+	want := filepath.ToSlash(relativeVideoPath(t, job.SeriesTitle, job.Title, job.EpisodeID))
+	if jobs.completePath != want {
+		t.Fatalf("保存先=%q want=%q", jobs.completePath, want)
+	}
+}
+
+func TestProcessJobReplacesExistingDestination(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "success")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	job := runningJob()
+	relative := relativeVideoPath(t, job.SeriesTitle, job.Title, job.EpisodeID)
+	destination := filepath.Join(dir, relative)
+	if err := os.MkdirAll(filepath.Dir(destination), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(destination, []byte("stale file from previous attempt"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeStore{job: job}
+	testRunner(t, jobs, dir).ProcessJob(context.Background(), job)
+	got, err := os.ReadFile(destination)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !jobs.completed || string(got) != "fake mp4" || jobs.completeSize != int64(len(got)) {
+		t.Fatalf("既存ファイルの置換: completed=%v content=%q size=%d", jobs.completed, got, jobs.completeSize)
+	}
+}
+
+func TestProcessJobRejectsAfterMoveSymlinkOutsideWorkDirectory(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "symlink")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	outside := filepath.Join(t.TempDir(), "outside.mp4")
+	if err := os.WriteFile(outside, []byte("outside video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	t.Setenv("FAKE_OUTSIDE_FILE", outside)
+	jobs := &fakeStore{job: runningJob()}
+	testRunner(t, jobs, dir).ProcessJob(context.Background(), jobs.job)
+	if jobs.completed || jobs.failedKind != "invalid_output" {
+		t.Fatalf("作業ディレクトリ外を指すシンボリックリンクを受理した: %+v", jobs)
+	}
+	if got, err := os.ReadFile(outside); err != nil || string(got) != "outside video" {
+		t.Fatalf("作業ディレクトリ外のファイルを変更した: %q %v", got, err)
+	}
+}
+
+func TestPathInsideSymlinkDerivedCases(t *testing.T) {
+	root := t.TempDir()
+	insideDir := filepath.Join(root, "real")
+	if err := os.Mkdir(insideDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	insideFile := filepath.Join(insideDir, "video.mp4")
+	if err := os.WriteFile(insideFile, []byte("video"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	outsideDir := t.TempDir()
+	outsideFile := filepath.Join(outsideDir, "outside.mp4")
+	if err := os.WriteFile(outsideFile, []byte("outside"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	internalFileLink := filepath.Join(root, "internal-file-link.mp4")
+	internalDirLink := filepath.Join(root, "internal-dir-link")
+	externalDirLink := filepath.Join(root, "external-dir-link")
+	rootLink := filepath.Join(t.TempDir(), "root-link")
+	for link, target := range map[string]string{
+		internalFileLink: insideFile,
+		internalDirLink:  insideDir,
+		externalDirLink:  outsideDir,
+		rootLink:         root,
+	} {
+		if err := os.Symlink(target, link); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	for _, tt := range []struct {
+		name, testRoot, candidate string
+		wantOK                    bool
+	}{
+		{"通常ファイル", root, insideFile, true},
+		{"作業ディレクトリ内を指すファイルリンク", root, internalFileLink, false},
+		{"after_moveがディレクトリ", root, insideDir, false},
+		{"作業ディレクトリ内を指すディレクトリリンク配下", root, filepath.Join(internalDirLink, "video.mp4"), true},
+		{"作業ディレクトリ外を指すディレクトリリンク配下", root, filepath.Join(externalDirLink, "outside.mp4"), false},
+		{"作業ディレクトリ自体がリンク", rootLink, filepath.Join(rootLink, "real", "video.mp4"), true},
+	} {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := pathInside(tt.testRoot, tt.candidate)
+			if tt.wantOK {
+				want, absErr := filepath.Abs(tt.candidate)
+				if absErr != nil {
+					t.Fatal(absErr)
+				}
+				if err != nil || got != want {
+					t.Fatalf("pathInside()=(%q, %v) want=(%q, nil)", got, err, want)
+				}
+				return
+			}
+			if !errors.Is(err, errInvalidOutput) || got != "" {
+				t.Fatalf("pathInside()=(%q, %v), invalid_output を期待", got, err)
+			}
+		})
+	}
+}
+
+func TestProcessJobDestinationDirectoryFailureCleansIncoming(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "success")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	job := runningJob()
+	seriesDir := filepath.Join(dir, filepath.Dir(relativeVideoPath(t, job.SeriesTitle, job.Title, job.EpisodeID)))
+	if err := os.WriteFile(seriesDir, []byte("blocks directory"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	jobs := &fakeStore{job: job}
+	testRunner(t, jobs, dir).ProcessJob(context.Background(), job)
+	if jobs.completed || jobs.failedKind != "unknown" {
+		t.Fatalf("保存先作成失敗: %+v", jobs)
+	}
+	if _, err := os.Stat(filepath.Join(dir, ".incoming", "7")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("作業ディレクトリが残った: %v", err)
+	}
+}
+
+func TestFailureClassificationAndRedaction(t *testing.T) {
+	for _, tt := range []struct{ mode, kind string }{
+		{"drm", "drm"}, {"geo", "geo"}, {"network", "network"},
+		{"unavailable", "unavailable"}, {"extract", "extract"}, {"unknown", "unknown"},
+	} {
+		t.Run(tt.mode, func(t *testing.T) {
+			t.Setenv("FAKE_YTDLP_MODE", tt.mode)
+			dir := t.TempDir()
+			jobs := &fakeStore{job: runningJob()}
+			testRunner(t, jobs, dir).ProcessJob(context.Background(), jobs.job)
+			if jobs.failedKind != tt.kind || jobs.completed || strings.Contains(jobs.failedMessage, "secret-value") {
+				t.Fatalf("failure: kind=%q message=%q completed=%v", jobs.failedKind, jobs.failedMessage, jobs.completed)
+			}
+			if _, err := os.Stat(filepath.Join(dir, ".incoming", "7")); !errors.Is(err, os.ErrNotExist) {
+				t.Fatalf("作業ディレクトリが残った: %v", err)
+			}
+		})
+	}
+}
+
+func TestInvalidProbeFailsAndCleans(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "success")
+	for _, mode := range []string{"bad-container", "bad-video", "bad-audio", "non-json", "failure"} {
+		t.Run(mode, func(t *testing.T) {
+			t.Setenv("FAKE_FFPROBE_MODE", mode)
+			dir := t.TempDir()
+			jobs := &fakeStore{job: runningJob()}
+			testRunner(t, jobs, dir).ProcessJob(context.Background(), jobs.job)
+			if jobs.failedKind != "invalid_output" || jobs.completed {
+				t.Fatalf("ffprobe 不合格: kind=%q complete=%v", jobs.failedKind, jobs.completed)
+			}
+			if _, err := os.Stat(filepath.Join(dir, ".incoming", "7")); !errors.Is(err, os.ErrNotExist) {
+				t.Fatalf("作業ディレクトリが残った: %v", err)
+			}
+		})
+	}
+}
+
+func TestProgressIsThrottledButHeartbeatContinues(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "burst")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	jobs := &fakeStore{job: runningJob()}
+	runner := testRunner(t, jobs, dir)
+	runner.config.ProgressInterval = 50 * time.Millisecond
+	runner.ProcessJob(context.Background(), jobs.job)
+	downloadUpdates := 0
+	for _, progress := range jobs.progress {
+		if progress.Phase == "video" {
+			downloadUpdates++
+		}
+	}
+	if downloadUpdates > 2 || downloadUpdates == 0 {
+		t.Fatalf("進捗の間引き: %d updates (%+v)", downloadUpdates, jobs.progress)
+	}
+	if jobs.heartbeats < 5 {
+		t.Fatalf("進捗が止まった間の heartbeat: %d", jobs.heartbeats)
+	}
+}
+
+func TestRunConcurrencyTwoDoesNotDuplicateAndIsolatesFailure(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "mixed")
+	t.Setenv("FAKE_FFPROBE_MODE", "valid")
+	dir := t.TempDir()
+	jobs := &queueStore{
+		jobs: []store.Job{
+			{ID: 7, EpisodeID: "ep-ok", SeriesTitle: "成功番組", Title: "成功回", Status: "queued"},
+			{ID: 8, EpisodeID: "ep-fail", SeriesTitle: "失敗番組", Title: "失敗回", Status: "queued"},
+		},
+		claimCounts: make(map[int64]int),
+	}
+	runner, err := New(jobs, Config{VideoDir: dir,
+		YTDLPPath: filepath.Join("testdata", "fake-yt-dlp.sh"), FFprobePath: filepath.Join("testdata", "fake-ffprobe.sh"),
+		Concurrency: 2, PollInterval: 5 * time.Millisecond, ProgressInterval: time.Millisecond,
+		HeartbeatInterval: 10 * time.Millisecond, CancelInterval: 5 * time.Millisecond}, log.New(io.Discard, "", 0))
+	if err != nil {
+		t.Fatal(err)
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	done := make(chan error, 1)
+	go func() { done <- runner.Run(ctx) }()
+	deadline := time.Now().Add(3 * time.Second)
+	for time.Now().Before(deadline) {
+		state, _, _ := jobs.state()
+		if state[0].Status == "succeeded" && state[1].Status == "failed" {
+			break
+		}
+		time.Sleep(5 * time.Millisecond)
+	}
+	cancel()
+	if err := <-done; err != nil {
+		t.Fatal(err)
+	}
+	state, counts, maxActive := jobs.state()
+	if state[0].Status != "succeeded" || state[1].Status != "failed" {
+		t.Fatalf("片方の失敗がもう片方へ波及した: %+v", state)
+	}
+	if counts[7] != 1 || counts[8] != 1 {
+		t.Fatalf("ジョブを二重取得した: %+v", counts)
+	}
+	if maxActive != 2 {
+		t.Fatalf("並行実行数の最大値=%d want=2", maxActive)
+	}
+	for _, id := range []int64{7, 8} {
+		if _, err := os.Stat(filepath.Join(dir, ".incoming", strconv.FormatInt(id, 10))); !errors.Is(err, os.ErrNotExist) {
+			t.Errorf("ジョブ %d の作業ディレクトリが残った: %v", id, err)
+		}
+	}
+}
+
+func TestCancelStopsProcessGroupAndLeavesCanceled(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "hang-drm")
+	dir := t.TempDir()
+	ready := filepath.Join(dir, "ready")
+	terminated := filepath.Join(dir, "terminated")
+	t.Setenv("FAKE_READY_FILE", ready)
+	t.Setenv("FAKE_TERM_FILE", terminated)
+	jobs := &fakeStore{job: runningJob()}
+	runner := testRunner(t, jobs, dir)
+	job := jobs.job
+	done := make(chan struct{})
+	go func() { runner.ProcessJob(context.Background(), job); close(done) }()
+	waitForFile(t, ready)
+	waitForHeartbeatCount(t, jobs, 2)
+	jobs.setStatus("canceled")
+	waitDone(t, done)
+	if jobs.failedKind != "" || jobs.requeued || jobs.completed || jobs.job.Status != "canceled" {
+		t.Fatalf("取り消し後: %+v", jobs)
+	}
+	waitForFile(t, terminated)
+	if _, err := os.Stat(filepath.Join(dir, ".incoming", "7")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("作業ディレクトリが残った: %v", err)
+	}
+}
+
+func TestShutdownStopsProcessAndRequeues(t *testing.T) {
+	t.Setenv("FAKE_YTDLP_MODE", "hang")
+	dir := t.TempDir()
+	ready := filepath.Join(dir, "ready")
+	t.Setenv("FAKE_READY_FILE", ready)
+	jobs := &fakeStore{job: runningJob()}
+	ctx, cancel := context.WithCancel(context.Background())
+	runner := testRunner(t, jobs, dir)
+	job := jobs.job
+	done := make(chan struct{})
+	go func() { runner.ProcessJob(ctx, job); close(done) }()
+	waitForFile(t, ready)
+	cancel()
+	waitDone(t, done)
+	if !jobs.requeued || jobs.job.Status != "queued" || jobs.failedKind != "" {
+		t.Fatalf("終了時の復帰: %+v", jobs)
+	}
+	if _, err := os.Stat(filepath.Join(dir, ".incoming", "7")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("作業ディレクトリが残った: %v", err)
+	}
+}
+
+func TestRunnerRejectsConcurrencyOutsideRange(t *testing.T) {
+	for _, concurrency := range []int{-1, 3} {
+		if _, err := New(&fakeStore{}, Config{Concurrency: concurrency}, nil); err == nil {
+			t.Errorf("concurrency=%d を許した", concurrency)
+		}
+	}
+}
+
+func TestFailureClassificationOrderAndRedaction(t *testing.T) {
+	for _, tt := range []struct{ message, want string }{
+		{"DRM geo-restricted connection video unavailable unable to extract", "drm"},
+		{"geo-restricted connection video unavailable unable to extract", "geo"},
+		{"connection video unavailable unable to extract", "network"},
+		{"video unavailable unable to extract", "unavailable"},
+		{"unable to extract", "extract"},
+		{"different error", "unknown"},
+	} {
+		if got := classifyFailure(tt.message); got != tt.want {
+			t.Errorf("classifyFailure(%q)=%q want=%q", tt.message, got, tt.want)
+		}
+	}
+	redacted := redact("Authorization: Bearer bearer-secret\nCookie: session=session-secret\ntoken=token-secret platform_uid=uid-secret")
+	for _, secret := range []string{"bearer-secret", "session-secret", "token-secret", "uid-secret"} {
+		if strings.Contains(redacted, secret) {
+			t.Errorf("秘密が残った: %q", redacted)
+		}
+	}
+}
+
+func waitForFile(t *testing.T, path string) {
+	t.Helper()
+	deadline := time.Now().Add(2 * time.Second)
+	for time.Now().Before(deadline) {
+		if _, err := os.Stat(path); err == nil {
+			return
+		}
+		time.Sleep(5 * time.Millisecond)
+	}
+	t.Fatalf("ファイル待ちがタイムアウト: %s", path)
+}
+
+func waitDone(t *testing.T, done <-chan struct{}) {
+	t.Helper()
+	select {
+	case <-done:
+	case <-time.After(3 * time.Second):
+		t.Fatal("worker の終了待ちがタイムアウト")
+	}
+}
+
+func waitForHeartbeatCount(t *testing.T, jobs *fakeStore, want int) {
+	t.Helper()
+	deadline := time.Now().Add(2 * time.Second)
+	for time.Now().Before(deadline) {
+		if jobs.heartbeatCount() >= want {
+			return
+		}
+		time.Sleep(5 * time.Millisecond)
+	}
+	t.Fatalf("heartbeat 待ちがタイムアウト: got=%d want=%d", jobs.heartbeatCount(), want)
+}

internal/worker/subscriptions.go

@@ -0,0 +1,156 @@
+package worker
+
+import (
+	"context"
+	"errors"
+	"log"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+type SubscriptionStore interface {
+	ListDueSubscriptions(context.Context, time.Time) ([]store.Subscription, error)
+	CompleteSubscriptionCheck(context.Context, string, []store.Episode, int, time.Time) (int, error)
+	RecordSubscriptionCheckFailure(context.Context, string, time.Time, string) error
+}
+
+type SeriesFetcher interface {
+	FetchSeriesEpisodes(context.Context, string) ([]tver.Episode, error)
+}
+
+type SubscriptionSchedulerConfig struct {
+	ScanInterval      time.Duration
+	DueAfter          time.Duration
+	SeriesInterval    time.Duration
+	PreviewMaxSeconds int
+	Now               func() time.Time
+	After             func(time.Duration) <-chan time.Time
+}
+
+type SubscriptionScheduler struct {
+	store   SubscriptionStore
+	fetcher SeriesFetcher
+	config  SubscriptionSchedulerConfig
+	logger  *log.Logger
+}
+
+func NewSubscriptionScheduler(subscriptions SubscriptionStore, fetcher SeriesFetcher, config SubscriptionSchedulerConfig, logger *log.Logger) (*SubscriptionScheduler, error) {
+	if subscriptions == nil || fetcher == nil {
+		return nil, errors.New("subscription store and fetcher are required")
+	}
+	if config.ScanInterval <= 0 {
+		config.ScanInterval = time.Hour
+	}
+	if config.DueAfter <= 0 {
+		config.DueAfter = 24 * time.Hour
+	}
+	if config.SeriesInterval <= 0 {
+		config.SeriesInterval = 3 * time.Second
+	}
+	if config.PreviewMaxSeconds == 0 {
+		config.PreviewMaxSeconds = tver.PreviewMaxSeconds
+	}
+	if config.PreviewMaxSeconds < 0 {
+		return nil, errors.New("preview threshold must not be negative")
+	}
+	if config.Now == nil {
+		config.Now = time.Now
+	}
+	if config.After == nil {
+		config.After = time.After
+	}
+	if logger == nil {
+		logger = log.Default()
+	}
+	return &SubscriptionScheduler{store: subscriptions, fetcher: fetcher, config: config, logger: logger}, nil
+}
+
+// Run は起動直後に確認し、その後は ScanInterval ごとに繰り返す。
+func (s *SubscriptionScheduler) Run(ctx context.Context) {
+	for {
+		s.checkDue(ctx)
+		if !s.wait(ctx, s.config.ScanInterval) {
+			return
+		}
+	}
+}
+
+func (s *SubscriptionScheduler) checkDue(ctx context.Context) {
+	now := s.config.Now()
+	subscriptions, err := s.store.ListDueSubscriptions(ctx, now.Add(-s.config.DueAfter))
+	if err != nil {
+		if ctx.Err() == nil {
+			s.logger.Printf("確認対象の登録番組を取得できません: %v", err)
+		}
+		return
+	}
+	for index, subscription := range subscriptions {
+		if index > 0 && !s.wait(ctx, s.config.SeriesInterval) {
+			return
+		}
+		episodes, err := s.fetcher.FetchSeriesEpisodes(ctx, subscription.SeriesID)
+		if err != nil {
+			if ctx.Err() != nil {
+				return
+			}
+			message := shortError(err)
+			if recordErr := s.store.RecordSubscriptionCheckFailure(ctx, subscription.SeriesID, s.config.Now(), message); recordErr != nil &&
+				!errors.Is(recordErr, store.ErrInvalidTransition) {
+				s.logger.Printf("登録番組 %s の確認エラーを記録できません: %v", subscription.SeriesID, recordErr)
+			}
+			s.logger.Printf("登録番組 %s の公開中エピソードを取得できません: %s", subscription.SeriesID, message)
+			continue
+		}
+		items := make([]store.Episode, 0, len(episodes))
+		for _, episode := range episodes {
+			items = append(items, subscriptionEpisode(episode))
+		}
+		queued, err := s.store.CompleteSubscriptionCheck(ctx, subscription.SeriesID, items,
+			s.config.PreviewMaxSeconds, s.config.Now())
+		if err != nil {
+			if ctx.Err() != nil {
+				return
+			}
+			if !errors.Is(err, store.ErrSubscriptionPaused) && !errors.Is(err, store.ErrInvalidTransition) {
+				s.logger.Printf("登録番組 %s の確認結果を保存できません: %v", subscription.SeriesID, err)
+			}
+			continue
+		}
+		s.logger.Printf("登録番組 %s を確認しました（新規ジョブ=%d）", subscription.SeriesID, queued)
+	}
+}
+
+func (s *SubscriptionScheduler) wait(ctx context.Context, duration time.Duration) bool {
+	select {
+	case <-ctx.Done():
+		return false
+	case <-s.config.After(duration):
+		return true
+	}
+}
+
+func subscriptionEpisode(episode tver.Episode) store.Episode {
+	item := store.Episode{ID: episode.ID, SeriesID: episode.SeriesID, SeriesTitle: episode.SeriesTitle,
+		Title: episode.Title, BroadcasterName: episode.BroadcasterName,
+		DurationSeconds: int(episode.Duration), ThumbnailPath: episode.ThumbnailPath}
+	if episode.EndAt > 0 {
+		end := time.Unix(episode.EndAt, 0)
+		item.EndAt = &end
+	}
+	return item
+}
+
+func shortError(err error) string {
+	message := redact(err.Error())
+	message = strings.Join(strings.Fields(message), " ")
+	const maxRunes = 512
+	if utf8.RuneCountInString(message) <= maxRunes {
+		return message
+	}
+	runes := []rune(message)
+	return string(runes[:maxRunes])
+}

internal/worker/subscriptions_test.go

@@ -0,0 +1,253 @@
+package worker
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"log"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"gitea.kazu634.com/kazu634/tver/internal/store"
+	"gitea.kazu634.com/kazu634/tver/internal/tver"
+)
+
+type schedulerCompletion struct {
+	seriesID string
+	episodes []store.Episode
+	limit    int
+	at       time.Time
+}
+
+type schedulerFailure struct {
+	seriesID, message string
+	at                time.Time
+}
+
+type fakeSubscriptionStore struct {
+	mu          sync.Mutex
+	due         []store.Subscription
+	cutoffs     []time.Time
+	completions []schedulerCompletion
+	failures    []schedulerFailure
+	listErr     error
+	completeErr error
+}
+
+func (f *fakeSubscriptionStore) ListDueSubscriptions(_ context.Context, cutoff time.Time) ([]store.Subscription, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.cutoffs = append(f.cutoffs, cutoff)
+	return append([]store.Subscription(nil), f.due...), f.listErr
+}
+
+func (f *fakeSubscriptionStore) CompleteSubscriptionCheck(_ context.Context, seriesID string, episodes []store.Episode, limit int, at time.Time) (int, error) {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.completions = append(f.completions, schedulerCompletion{seriesID, append([]store.Episode(nil), episodes...), limit, at})
+	return len(episodes), f.completeErr
+}
+
+func (f *fakeSubscriptionStore) RecordSubscriptionCheckFailure(_ context.Context, seriesID string, at time.Time, message string) error {
+	f.mu.Lock()
+	defer f.mu.Unlock()
+	f.failures = append(f.failures, schedulerFailure{seriesID, message, at})
+	return nil
+}
+
+type fakeSeriesFetcher struct {
+	mu       sync.Mutex
+	calls    []string
+	episodes map[string][]tver.Episode
+	errors   map[string]error
+	block    bool
+	started  chan string
+}
+
+func (f *fakeSeriesFetcher) FetchSeriesEpisodes(ctx context.Context, seriesID string) ([]tver.Episode, error) {
+	f.mu.Lock()
+	f.calls = append(f.calls, seriesID)
+	block := f.block
+	started := f.started
+	episodes := append([]tver.Episode(nil), f.episodes[seriesID]...)
+	err := f.errors[seriesID]
+	f.mu.Unlock()
+	if started != nil {
+		started <- seriesID
+	}
+	if block {
+		<-ctx.Done()
+		return nil, ctx.Err()
+	}
+	return episodes, err
+}
+
+func TestSubscriptionSchedulerChecksImmediatelyAndMapsEpisodes(t *testing.T) {
+	now := time.Date(2026, 10, 3, 12, 0, 0, 0, time.UTC)
+	subscriptions := &fakeSubscriptionStore{due: []store.Subscription{{SeriesID: "one"}, {SeriesID: "two"}}}
+	fetcher := &fakeSeriesFetcher{episodes: map[string][]tver.Episode{
+		"one": {{ID: "ep1", SeriesID: "one", SeriesTitle: "番組", Title: "回", BroadcasterName: "局", Duration: 180, EndAt: 1_800_000_000, ThumbnailPath: "/image"}},
+		"two": {{ID: "ep2", SeriesID: "two", Duration: 181}},
+	}, errors: map[string]error{}}
+	var waits []time.Duration
+	after := func(duration time.Duration) <-chan time.Time {
+		waits = append(waits, duration)
+		ch := make(chan time.Time, 1)
+		ch <- now
+		return ch
+	}
+	scheduler, err := NewSubscriptionScheduler(subscriptions, fetcher, SubscriptionSchedulerConfig{
+		DueAfter: 24 * time.Hour, SeriesInterval: 4 * time.Second,
+		Now: func() time.Time { return now }, After: after,
+	}, log.New(&bytes.Buffer{}, "", 0))
+	if err != nil {
+		t.Fatal(err)
+	}
+	scheduler.checkDue(context.Background())
+	if len(subscriptions.cutoffs) != 1 || !subscriptions.cutoffs[0].Equal(now.Add(-24*time.Hour)) {
+		t.Fatalf("確認対象日時: %v", subscriptions.cutoffs)
+	}
+	if len(fetcher.calls) != 2 || fetcher.calls[0] != "one" || fetcher.calls[1] != "two" || len(waits) != 1 || waits[0] != 4*time.Second {
+		t.Fatalf("順次確認と間隔: calls=%v waits=%v", fetcher.calls, waits)
+	}
+	if len(subscriptions.completions) != 2 || subscriptions.completions[0].limit != tver.PreviewMaxSeconds || !subscriptions.completions[0].at.Equal(now) {
+		t.Fatalf("確認完了: %+v", subscriptions.completions)
+	}
+	got := subscriptions.completions[0].episodes[0]
+	if got.ID != "ep1" || got.DurationSeconds != 180 || got.EndAt == nil || got.EndAt.Unix() != 1_800_000_000 {
+		t.Fatalf("エピソード変換: %+v", got)
+	}
+}
+
+func TestShortErrorLimitsUnicodeByCharacters(t *testing.T) {
+	message := shortError(errors.New(strings.Repeat("界", 260) + "\n\t" + strings.Repeat("語", 300)))
+	if got := len([]rune(message)); got != 512 {
+		t.Fatalf("エラー文字数=%d want=512", got)
+	}
+	if strings.ContainsAny(message, "\r\n\t") || strings.Contains(message, "  ") {
+		t.Fatalf("空白を1行へ正規化していない: %q", message)
+	}
+	if !strings.HasSuffix(message, strings.Repeat("語", 251)) {
+		t.Fatalf("UTF-8文字の途中で切断または境界が不正: %q", message)
+	}
+}
+
+func TestSubscriptionSchedulerRecordsRedactedFailureWithoutCompleting(t *testing.T) {
+	now := time.Date(2026, 10, 3, 12, 0, 0, 0, time.UTC)
+	subscriptions := &fakeSubscriptionStore{due: []store.Subscription{{SeriesID: "failed"}}}
+	fetcher := &fakeSeriesFetcher{errors: map[string]error{
+		"failed": errors.New("request failed\nplatform_token=secret-token Cookie: session-secret"),
+	}}
+	var logs bytes.Buffer
+	scheduler, err := NewSubscriptionScheduler(subscriptions, fetcher, SubscriptionSchedulerConfig{Now: func() time.Time { return now }}, log.New(&logs, "", 0))
+	if err != nil {
+		t.Fatal(err)
+	}
+	scheduler.checkDue(context.Background())
+	if len(subscriptions.completions) != 0 || len(subscriptions.failures) != 1 || !subscriptions.failures[0].at.Equal(now) {
+		t.Fatalf("失敗の記録: completions=%v failures=%v", subscriptions.completions, subscriptions.failures)
+	}
+	message := subscriptions.failures[0].message
+	if strings.Contains(message, "secret-token") || strings.Contains(message, "session-secret") || strings.Contains(logs.String(), "secret") || strings.Contains(message, "\n") {
+		t.Fatalf("秘密値または改行が残った: message=%q logs=%q", message, logs.String())
+	}
+}
+
+func TestSubscriptionSchedulerRunStartsImmediatelyThenUsesScanInterval(t *testing.T) {
+	now := time.Date(2026, 10, 3, 12, 0, 0, 0, time.UTC)
+	subscriptions := &fakeSubscriptionStore{}
+	fetcher := &fakeSeriesFetcher{}
+	requested := make(chan time.Duration, 2)
+	tick := make(chan time.Time, 1)
+	after := func(duration time.Duration) <-chan time.Time {
+		requested <- duration
+		return tick
+	}
+	scheduler, err := NewSubscriptionScheduler(subscriptions, fetcher, SubscriptionSchedulerConfig{
+		ScanInterval: time.Hour, Now: func() time.Time { return now }, After: after,
+	}, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	done := make(chan struct{})
+	go func() { scheduler.Run(ctx); close(done) }()
+	select {
+	case duration := <-requested:
+		if duration != time.Hour {
+			t.Fatalf("走査間隔: %v", duration)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("起動直後の確認が行われなかった")
+	}
+	subscriptions.mu.Lock()
+	initialCalls := len(subscriptions.cutoffs)
+	subscriptions.mu.Unlock()
+	if initialCalls != 1 {
+		t.Fatalf("起動直後の確認回数: %d", initialCalls)
+	}
+	tick <- now
+	select {
+	case <-requested:
+	case <-time.After(time.Second):
+		t.Fatal("1時間後の確認が行われなかった")
+	}
+	cancel()
+	select {
+	case <-done:
+	case <-time.After(time.Second):
+		t.Fatal("終了できなかった")
+	}
+	subscriptions.mu.Lock()
+	defer subscriptions.mu.Unlock()
+	if len(subscriptions.cutoffs) != 2 {
+		t.Fatalf("確認回数: %d", len(subscriptions.cutoffs))
+	}
+}
+
+func TestSubscriptionSchedulerCancellationInterruptsFetchAndSeriesWait(t *testing.T) {
+	now := time.Date(2026, 10, 3, 12, 0, 0, 0, time.UTC)
+	t.Run("fetch", func(t *testing.T) {
+		subscriptions := &fakeSubscriptionStore{due: []store.Subscription{{SeriesID: "one"}}}
+		fetcher := &fakeSeriesFetcher{block: true, started: make(chan string, 1)}
+		scheduler, _ := NewSubscriptionScheduler(subscriptions, fetcher, SubscriptionSchedulerConfig{Now: func() time.Time { return now }}, nil)
+		ctx, cancel := context.WithCancel(context.Background())
+		done := make(chan struct{})
+		go func() { scheduler.checkDue(ctx); close(done) }()
+		select {
+		case <-fetcher.started:
+		case <-time.After(time.Second):
+			t.Fatal("取得が開始されなかった")
+		}
+		cancel()
+		select {
+		case <-done:
+		case <-time.After(time.Second):
+			t.Fatal("取得中断で終了しなかった")
+		}
+		if len(subscriptions.failures) != 0 || len(subscriptions.completions) != 0 {
+			t.Fatalf("中断した番組を記録した: failures=%v completions=%v", subscriptions.failures, subscriptions.completions)
+		}
+	})
+
+	t.Run("between series", func(t *testing.T) {
+		subscriptions := &fakeSubscriptionStore{due: []store.Subscription{{SeriesID: "one"}, {SeriesID: "two"}}}
+		fetcher := &fakeSeriesFetcher{episodes: map[string][]tver.Episode{}, errors: map[string]error{}}
+		waiting := make(chan struct{})
+		never := make(chan time.Time)
+		scheduler, _ := NewSubscriptionScheduler(subscriptions, fetcher, SubscriptionSchedulerConfig{
+			Now: func() time.Time { return now }, After: func(time.Duration) <-chan time.Time { close(waiting); return never },
+		}, nil)
+		ctx, cancel := context.WithCancel(context.Background())
+		done := make(chan struct{})
+		go func() { scheduler.checkDue(ctx); close(done) }()
+		<-waiting
+		cancel()
+		<-done
+		if len(fetcher.calls) != 1 || fetcher.calls[0] != "one" {
+			t.Fatalf("番組間の中断: %v", fetcher.calls)
+		}
+	})
+}

internal/worker/testdata/fake-ffprobe.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+set -eu
+case "${FAKE_FFPROBE_MODE:-valid}" in
+  invalid|bad-container)
+    echo '{"format":{"format_name":"matroska"},"streams":[{"codec_type":"video","codec_name":"h264"},{"codec_type":"audio","codec_name":"aac"}]}' ;;
+  bad-video)
+    echo '{"format":{"format_name":"mp4"},"streams":[{"codec_type":"video","codec_name":"vp9"},{"codec_type":"audio","codec_name":"aac"}]}' ;;
+  bad-audio)
+    echo '{"format":{"format_name":"mp4"},"streams":[{"codec_type":"video","codec_name":"h264"},{"codec_type":"audio","codec_name":"opus"}]}' ;;
+  non-json)
+    echo 'not JSON' ;;
+  failure)
+    echo 'probe failed' >&2
+    exit 1 ;;
+  *)
+    echo '{"format":{"format_name":"mov,mp4,m4a,3gp,3g2,mj2"},"streams":[{"codec_type":"video","codec_name":"h264"},{"codec_type":"audio","codec_name":"aac"}]}' ;;
+esac

internal/worker/testdata/fake-yt-dlp.sh

@@ -0,0 +1,67 @@
+#!/bin/sh
+set -eu
+
+[ -z "${FAKE_ARGS_FILE:-}" ] || printf '%s\n' "$@" > "$FAKE_ARGS_FILE"
+
+output_template=
+episode_url=
+while [ "$#" -gt 0 ]; do
+  if [ "$1" = "-o" ]; then
+    output_template=$2
+    shift 2
+    continue
+  fi
+  case "$1" in
+    https://tver.jp/episodes/*) episode_url=$1 ;;
+  esac
+  shift
+done
+
+mode=${FAKE_YTDLP_MODE:-success}
+if [ "$mode" = "mixed" ]; then
+  case "$episode_url" in
+    */ep-fail) mode=unknown ;;
+    *) mode=success ;;
+  esac
+fi
+case "$mode" in
+  drm) echo 'ERROR: This video is DRM protected token=secret-value' >&2; exit 1 ;;
+  geo) echo 'ERROR: This video is not available from your location due to geo restriction' >&2; exit 1 ;;
+  network) echo 'ERROR: Unable to download JSON metadata: [Errno 61] Connection refused' >&2; exit 1 ;;
+  unavailable) echo 'ERROR: MEDIA_NOT_FOUND: episode does not exist' >&2; exit 1 ;;
+  extract) echo 'ERROR: Unable to extract player data' >&2; exit 1 ;;
+  unknown) echo 'ERROR: surprising failure' >&2; exit 1 ;;
+  hang|hang-drm)
+    [ -z "${FAKE_READY_FILE:-}" ] || : > "$FAKE_READY_FILE"
+    if [ "$mode" = "hang-drm" ]; then
+      trap 'echo "ERROR: DRM protected" >&2; [ -z "${FAKE_TERM_FILE:-}" ] || : > "$FAKE_TERM_FILE"; exit 143' TERM INT
+    else
+      trap '[ -z "${FAKE_TERM_FILE:-}" ] || : > "$FAKE_TERM_FILE"; exit 143' TERM INT
+    fi
+    while :; do sleep 1; done
+    ;;
+esac
+
+output=$(printf '%s' "$output_template" | sed 's/%(id)s/fake/g; s/%(ext)s/mp4/g')
+mkdir -p "$(dirname "$output")"
+printf 'fake mp4' > "$output"
+if [ "$mode" = "symlink" ]; then
+  rm "$output"
+  ln -s "$FAKE_OUTSIDE_FILE" "$output"
+fi
+
+if [ "$mode" = "burst" ]; then
+  i=1
+  while [ "$i" -le 20 ]; do
+    printf '{"event":"download","format_id":"hls-698-1","progress":{"status":"downloading","downloaded_bytes":%s,"total_bytes":100,"speed":10,"eta":2,"fragment_index":%s,"fragment_count":20}}\n' "$i" "$i"
+    i=$((i + 1))
+  done
+  sleep 0.12
+else
+  echo '{"event":"download","format_id":"hls-698-1","progress":{"status":"downloading","downloaded_bytes":1024,"fragment_index":0,"fragment_count":50,"filename":"/private/tmp/tver-spike/epq432nee4.fhls-698-1.mp4","tmpfilename":"/private/tmp/tver-spike/epq432nee4.fhls-698-1.mp4.part","max_progress":null,"progress_idx":null,"elapsed":0,"total_bytes_estimate":29798400.0,"speed":4834.271158821972,"eta":null,"_eta_str":"Unknown","_speed_str":"   4.72KiB/s","_percent":0.003436426116838488,"_percent_str":"  0.0%","_total_bytes_str":"       N/A","_total_bytes_estimate_str":"  28.42MiB","_downloaded_bytes_str":"   1.00KiB","_elapsed_str":"00:00:00","_default_template":"  0.0% of ~  28.42MiB at    4.72KiB/s ETA Unknown (frag 0/50)"}}'
+  sleep 0.02
+  echo '{"event":"download","format_id":"hls-ts_AUDIO-0_2","progress":{"status":"finished","downloaded_bytes":50,"total_bytes":50,"speed":20,"eta":0}}'
+  sleep 0.02
+  echo '{"event":"postprocess","progress":{"status":"started","postprocessor":"Merger"}}' >&2
+fi
+printf '{"event":"after_move","filepath":"%s"}\n' "$output"