登録番組の定期確認を追加（24 時間ごと、予告の除外、確認エラーの記録）

internal/store/store_test.go

@@ -113,7 +113,7 @@ func TestMigrate(t *testing.T) {
 	if err := pool.QueryRow(ctx, `SELECT count(*), min(applied_at) FROM schema_migrations`).Scan(&count, &second); err != nil {
 		t.Fatal(err)
 	}
-	if count != 2 || !first.Equal(second) {
+	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)
 	}
 }
@@ -138,7 +138,7 @@ func TestMigrateConcurrent(t *testing.T) {
 	if err := pool.QueryRow(context.Background(), `SELECT count(*) FROM schema_migrations`).Scan(&count); err != nil {
 		t.Fatal(err)
 	}
-	if count != 2 {
+	if count != 3 {
 		t.Fatalf("適用件数: %d", count)
 	}
 }
@@ -166,7 +166,7 @@ func TestMigrateAddsKnownEpisodesToExistingDatabase(t *testing.T) {
 		t.Fatal(err)
 	}
 	var count int
-	if err := pool.QueryRow(ctx, `SELECT count(*) FROM schema_migrations`).Scan(&count); err != nil || count != 2 {
+	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 {
@@ -180,6 +180,47 @@ func TestMigrateAddsKnownEpisodesToExistingDatabase(t *testing.T) {
 	}
 }
 
+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'`)