待ち行列への登録と状態表示を追加（新着からの登録、/queue、DATABASE_URL）

internal/web/static/app.css

@@ -13,3 +13,10 @@ main { max-width: 72rem; margin: 2rem auto; padding: 0 2rem; }
 .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; }
+.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; }