v3: youtube embeds now honour the timestamp in the source url, with a migration backfilling existing dumps

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

api/db/migrate.ts

@@ -8,6 +8,7 @@ import { up as up0006Categories } from "./migrations/0006_categories.ts";
 import { up as up0007PasswordResetTokens } from "./migrations/0007_password_reset_tokens.ts";
 import { up as up0008ChatMessages } from "./migrations/0008_chat_messages.ts";
 import { up as up0009ChatReply } from "./migrations/0009_chat_reply.ts";
+import { up as up0010YoutubeEmbedStart } from "./migrations/0010_youtube_embed_start.ts";
 
 interface Migration {
   name: string;
@@ -27,6 +28,7 @@ const MIGRATIONS: Migration[] = [
   { name: "0007_password_reset_tokens", up: up0007PasswordResetTokens },
   { name: "0008_chat_messages", up: up0008ChatMessages },
   { name: "0009_chat_reply", up: up0009ChatReply },
+  { name: "0010_youtube_embed_start", up: up0010YoutubeEmbedStart },
 ];
 
 export function runMigrations(db: DatabaseSync): void {

api/db/migrations/0010_youtube_embed_start.ts

@@ -0,0 +1,76 @@
+import type { DatabaseSync } from "node:sqlite";
+
+// Backfills the `start` parameter on stored YouTube embed URLs.
+//
+// `rich_content.embedUrl` is computed once, at dump creation, and previously
+// dropped the timestamp carried by the source URL (`?t=1265`, `?t=1h2m3s`), so
+// those videos always opened at 0:00 in the global player. The provider now
+// translates `t`/`start` into the `start` param the iframe player honours; this
+// migration applies the same translation to rows written before that fix.
+//
+// Purely local — it re-derives the param from the already-stored source URL and
+// makes no network calls. Self-contained (no imports from api/services) so it
+// stays reproducible even if the provider's parsing evolves later.
+//
+// Idempotent: rows whose embed URL already carries a `start` are skipped, so a
+// fresh database built from schema.sql is simply a no-op.
+
+/** Parse `t`/`start` — plain seconds, `90s`, or `1h2m3s` / `20m5s`. */
+function extractStartSeconds(url: string): number | null {
+  let raw: string | null;
+  try {
+    const u = new URL(url);
+    raw = u.searchParams.get("t") ?? u.searchParams.get("start");
+  } catch {
+    return null;
+  }
+  if (!raw) return null;
+
+  if (/^\d+$/.test(raw)) return Number(raw);
+
+  const hms = /^(?:(\d+)h)?(?:(\d+)m)?(?:(\d+)s)?$/i.exec(raw);
+  if (!hms || (!hms[1] && !hms[2] && !hms[3])) return null;
+  return Number(hms[1] ?? 0) * 3600 + Number(hms[2] ?? 0) * 60 +
+    Number(hms[3] ?? 0);
+}
+
+export function up(db: DatabaseSync): void {
+  const rows = db.prepare(
+    `SELECT id, url, rich_content FROM dumps
+      WHERE kind = 'url' AND url IS NOT NULL AND rich_content IS NOT NULL;`,
+  ).all() as { id: string; url: string; rich_content: string }[];
+
+  const update = db.prepare(
+    `UPDATE dumps SET rich_content = ? WHERE id = ?;`,
+  );
+
+  let patched = 0;
+  for (const row of rows) {
+    let rich: { type?: string; embedUrl?: string };
+    try {
+      rich = JSON.parse(row.rich_content);
+    } catch {
+      continue; // malformed payload — leave it untouched
+    }
+    if (rich.type !== "youtube" || !rich.embedUrl) continue;
+
+    const start = extractStartSeconds(row.url);
+    if (!start) continue;
+
+    let embed: URL;
+    try {
+      embed = new URL(rich.embedUrl);
+    } catch {
+      continue;
+    }
+    if (embed.searchParams.has("start")) continue;
+
+    embed.searchParams.set("start", String(start));
+    update.run(JSON.stringify({ ...rich, embedUrl: embed.toString() }), row.id);
+    patched++;
+  }
+
+  if (patched > 0) {
+    console.log(`[migrate] 0010: added start offset to ${patched} embed(s)`);
+  }
+}

api/routes/dumps.ts

@@ -8,6 +8,7 @@ import {
   isCreateUrlDumpRequest,
   isUpdateDumpRequest,
   type PaginatedData,
+  type Playlist,
 } from "../model/interfaces.ts";
 
 import { authMiddleware } from "../middleware/auth.ts";
@@ -30,6 +31,7 @@ import {
 } from "../services/dump-service.ts";
 import { getDumpVoters } from "../services/vote-service.ts";
 import { getRelatedDumps } from "../services/backlink-service.ts";
+import { getPlaylistsForDump } from "../services/playlist-service.ts";
 
 const router = new Router({ prefix: "/api/dumps" });
 
@@ -128,6 +130,18 @@ router.get("/:dumpId/related", async (ctx) => {
   ctx.response.body = responseBody;
 });
 
+router.get("/:dumpId/playlists", async (ctx) => {
+  const requestingUserId = await parseOptionalAuth(ctx) ?? undefined;
+  // Resolve through getDump so private dumps 404 for anyone but their owner.
+  const dump = getDump(ctx.params.dumpId, requestingUserId);
+  const playlists = getPlaylistsForDump(dump.id, requestingUserId);
+  const responseBody: APIResponse<Playlist[]> = {
+    success: true,
+    data: playlists,
+  };
+  ctx.response.body = responseBody;
+});
+
 router.get("/", async (ctx) => {
   const requestingUserId = await parseOptionalAuth(ctx) ?? undefined;
   const { page, limit } = parsePagination(ctx.request.url.searchParams);

api/services/playlist-service.ts

@@ -382,6 +382,26 @@ export function getPlaylistMembershipsForDump(
   });
 }
 
+/**
+ * The playlists a dump appears in — the "in collections" counterpart to
+ * backlinks. Privacy-filtered like `getRelatedDumps`: public playlists for
+ * everyone, plus the requesting user's own private ones. Capped at 20 — a
+ * small, bounded list of supporting context.
+ */
+export function getPlaylistsForDump(
+  dumpId: string,
+  requestingUserId?: string,
+): Playlist[] {
+  const rows = db.prepare(
+    `SELECT ${PLAYLIST_SELECT}
+     INNER JOIN playlist_dumps pd ON pd.playlist_id = p.id
+     WHERE pd.dump_id = ? AND (p.is_public = 1 OR p.user_id = ?)
+     ORDER BY p.created_at DESC LIMIT 20;`,
+  ).all(dumpId, requestingUserId ?? "");
+
+  return rows.filter(isPlaylistRow).map(playlistRowToApi);
+}
+
 export function getPlaylistImageInfo(
   idOrSlug: string,
 ): { id: string; imageMime: string } | undefined {

api/services/providers/youtube.ts

@@ -32,6 +32,30 @@ function extractPlaylistId(url: string): string | null {
   }
 }
 
+/**
+ * Extract the playback offset in seconds from a YouTube URL.
+ * Accepts `t` (plain seconds, `90s`, or `1h2m3s` / `20m5s` forms) and `start`
+ * (plain seconds). Returns null when absent or unparseable.
+ */
+function extractStartSeconds(url: string): number | null {
+  let raw: string | null;
+  try {
+    const u = new URL(url);
+    raw = u.searchParams.get("t") ?? u.searchParams.get("start");
+  } catch {
+    return null;
+  }
+  if (!raw) return null;
+
+  const plain = /^\d+$/.exec(raw);
+  if (plain) return Number(raw);
+
+  const hms = /^(?:(\d+)h)?(?:(\d+)m)?(?:(\d+)s)?$/i.exec(raw);
+  if (!hms || (!hms[1] && !hms[2] && !hms[3])) return null;
+  return Number(hms[1] ?? 0) * 3600 + Number(hms[2] ?? 0) * 60 +
+    Number(hms[3] ?? 0);
+}
+
 /** Matches /channel/UC…, /@handle, /c/name, /user/name */
 function extractChannelPath(url: string): string | null {
   try {
@@ -134,6 +158,8 @@ export const youtubeProvider: RichContentProvider = {
 
     const embedParams = new URLSearchParams({ rel: "0" });
     if (listId) embedParams.set("list", listId);
+    const start = extractStartSeconds(url);
+    if (start) embedParams.set("start", String(start));
 
     return {
       type: "youtube",

src/App.css

@@ -4155,6 +4155,53 @@ body.has-player .chat-fab {
   }
 }
 
+/* "In collections" reuses the related-section chrome (and its per-theme
+   overrides), so the playlist cards inside it get the same subordinate,
+   tightened treatment the backlink dump cards do. */
+.collections-section .playlist-card {
+  border-width: 1px;
+  border-radius: 8px;
+  background: transparent;
+  opacity: 0.78;
+  transition: border-color 0.15s, opacity 0.15s;
+}
+
+.collections-section .playlist-card:hover {
+  opacity: 1;
+}
+
+.collections-section .playlist-card-inner {
+  padding: 0.45rem 0.65rem;
+  gap: 0.6rem;
+}
+
+.collections-section .playlist-card-preview {
+  width: 48px;
+  height: 48px;
+  align-self: center;
+}
+
+.collections-section .playlist-card-icon {
+  font-size: 1.15rem;
+}
+
+.collections-section .playlist-card-title {
+  font-size: 0.88rem;
+}
+
+.collections-section .playlist-card-description {
+  font-size: 0.78rem;
+  -webkit-line-clamp: 1;
+  line-clamp: 1;
+}
+
+@media (max-width: 512px) {
+  .collections-section .playlist-card-preview {
+    width: 40px;
+    height: 40px;
+  }
+}
+
 .comment-list {
   list-style: none;
   margin: 0;

src/locales/en.po

@@ -30,12 +30,12 @@ msgstr "{0, plural, one {# dump} other {# dumps}}"
 
 #. placeholder {0}: names[0]
 #. placeholder {1}: names[1]
-#: src/components/ChatModal.tsx:528
+#: src/components/ChatModal.tsx:531
 msgid "{0} and {1} are typing…"
 msgstr "{0} and {1} are typing…"
 
 #. placeholder {0}: names[0]
-#: src/components/ChatModal.tsx:527
+#: src/components/ChatModal.tsx:530
 msgid "{0} is typing…"
 msgstr "{0} is typing…"
 
@@ -58,8 +58,8 @@ msgstr "{visibleCount, plural, one {# comment} other {# comments}}"
 msgid "← Back"
 msgstr "← Back"
 
-#: src/pages/Dump.tsx:264
-#: src/pages/Dump.tsx:494
+#: src/pages/Dump.tsx:291
+#: src/pages/Dump.tsx:521
 #: src/pages/DumpEdit.tsx:181
 msgid "← Back to all dumps"
 msgstr "← Back to all dumps"
@@ -78,7 +78,7 @@ msgstr "+ Invite someone"
 msgid "+ New playlist"
 msgstr "+ New playlist"
 
-#: src/pages/Dump.tsx:335
+#: src/pages/Dump.tsx:362
 msgid "+ Playlist"
 msgstr "+ Playlist"
 
@@ -202,7 +202,7 @@ msgstr "Can't connect to the live updates server. Upvotes and notifications may
 #: src/components/CommentThread.tsx:124
 #: src/components/ConfirmModal.tsx:32
 #: src/components/form/FormActions.tsx:32
-#: src/pages/Dump.tsx:376
+#: src/pages/Dump.tsx:403
 #: src/pages/DumpEdit.tsx:460
 #: src/pages/PlaylistDetail.tsx:920
 #: src/pages/UserPublicProfile.tsx:1674
@@ -214,8 +214,8 @@ msgstr "Cancel"
 msgid "Cancel removal"
 msgstr "Cancel removal"
 
-#: src/components/ChatModal.tsx:619
-#: src/components/ChatModal.tsx:620
+#: src/components/ChatModal.tsx:622
+#: src/components/ChatModal.tsx:623
 msgid "Cancel reply"
 msgstr "Cancel reply"
 
@@ -248,7 +248,7 @@ msgstr "Change password…"
 #: src/components/ChatButton.tsx:17
 #: src/components/ChatFab.tsx:49
 #: src/components/ChatFab.tsx:50
-#: src/components/ChatModal.tsx:533
+#: src/components/ChatModal.tsx:536
 msgid "Chat"
 msgstr "Chat"
 
@@ -426,7 +426,7 @@ msgstr "Earlier"
 #: src/components/ChatModal.tsx:172
 #: src/components/ChatModal.tsx:173
 #: src/components/CommentThread.tsx:367
-#: src/pages/Dump.tsx:490
+#: src/pages/Dump.tsx:517
 #: src/pages/PlaylistDetail.tsx:625
 msgid "Edit"
 msgstr "Edit"
@@ -445,7 +445,7 @@ msgstr "Edit title"
 #. placeholder {0}: relativeTime(message.updatedAt)
 #: src/components/ChatModal.tsx:152
 #: src/components/CommentThread.tsx:317
-#: src/pages/Dump.tsx:429
+#: src/pages/Dump.tsx:456
 #: src/pages/PlaylistDetail.tsx:664
 msgid "edited {0}"
 msgstr "edited {0}"
@@ -455,7 +455,7 @@ msgstr "edited {0}"
 #. placeholder {0}: message.updatedAt.toLocaleString()
 #: src/components/ChatModal.tsx:150
 #: src/components/CommentThread.tsx:315
-#: src/pages/Dump.tsx:427
+#: src/pages/Dump.tsx:454
 #: src/pages/PlaylistDetail.tsx:661
 msgid "Edited {0}"
 msgstr "Edited {0}"
@@ -632,6 +632,10 @@ msgstr "Hot"
 msgid "If that address is registered you'll receive a reset link shortly."
 msgstr "If that address is registered you'll receive a reset link shortly."
 
+#: src/pages/Dump.tsx:551
+msgid "In collections"
+msgstr "In collections"
+
 #: src/pages/UserRegister.tsx:96
 msgid "Invalid invite"
 msgstr "Invalid invite"
@@ -675,11 +679,11 @@ msgstr "Live updates unavailable."
 msgid "Load more"
 msgstr "Load more"
 
-#: src/components/ChatModal.tsx:546
+#: src/components/ChatModal.tsx:549
 msgid "Load older messages"
 msgstr "Load older messages"
 
-#: src/pages/Dump.tsx:240
+#: src/pages/Dump.tsx:267
 #: src/pages/DumpEdit.tsx:157
 msgid "Loading dump…"
 msgstr "Loading dump…"
@@ -705,7 +709,7 @@ msgid "Loading profile…"
 msgstr "Loading profile…"
 
 #: src/components/CategoryManager.tsx:52
-#: src/components/ChatModal.tsx:545
+#: src/components/ChatModal.tsx:548
 #: src/components/PlaylistMembershipPanel.tsx:28
 #: src/components/TextEditor.tsx:289
 #: src/components/UserListPopover.tsx:192
@@ -824,7 +828,7 @@ msgstr "No followed playlists yet."
 msgid "No invitees yet."
 msgstr "No invitees yet."
 
-#: src/components/ChatModal.tsx:553
+#: src/components/ChatModal.tsx:556
 msgid "No messages yet. Say hello!"
 msgstr "No messages yet. Say hello!"
 
@@ -942,7 +946,7 @@ msgstr "Posting…"
 #: src/components/JournalCard.tsx:121
 #: src/components/PlaylistCard.tsx:73
 #: src/components/PlaylistMembershipPanel.tsx:55
-#: src/pages/Dump.tsx:435
+#: src/pages/Dump.tsx:462
 #: src/pages/PlaylistDetail.tsx:644
 msgid "private"
 msgstr "private"
@@ -984,7 +988,7 @@ msgstr "Registering…"
 msgid "Registration failed"
 msgstr "Registration failed"
 
-#: src/pages/Dump.tsx:502
+#: src/pages/Dump.tsx:529
 msgid "Related"
 msgstr "Related"
 
@@ -1014,7 +1018,7 @@ msgstr "Replace file"
 msgid "Reply"
 msgstr "Reply"
 
-#: src/components/ChatModal.tsx:609
+#: src/components/ChatModal.tsx:612
 msgid "Replying to"
 msgstr "Replying to"
 
@@ -1035,7 +1039,7 @@ msgstr "Reset password"
 msgid "Reset to default"
 msgstr "Reset to default"
 
-#: src/pages/Dump.tsx:257
+#: src/pages/Dump.tsx:284
 #: src/pages/DumpEdit.tsx:174
 msgid "Retry"
 msgstr "Retry"
@@ -1046,7 +1050,7 @@ msgstr "Role"
 
 #: src/components/ChatModal.tsx:222
 #: src/components/CommentThread.tsx:328
-#: src/pages/Dump.tsx:368
+#: src/pages/Dump.tsx:395
 #: src/pages/DumpEdit.tsx:463
 #: src/pages/PlaylistDetail.tsx:927
 #: src/pages/UserPublicProfile.tsx:1666
@@ -1056,7 +1060,7 @@ msgstr "Save"
 
 #: src/components/ChangePasswordModal.tsx:100
 #: src/components/CommentThread.tsx:329
-#: src/pages/Dump.tsx:367
+#: src/pages/Dump.tsx:394
 #: src/pages/PlaylistDetail.tsx:923
 #: src/pages/ResetPassword.tsx:126
 #: src/pages/UserPublicProfile.tsx:1663
@@ -1082,7 +1086,7 @@ msgstr "Search failed"
 msgid "Searching…"
 msgstr "Searching…"
 
-#: src/components/ChatModal.tsx:655
+#: src/components/ChatModal.tsx:658
 msgid "Send"
 msgstr "Send"
 
@@ -1107,7 +1111,7 @@ msgstr "Set new password"
 msgid "Settings"
 msgstr "Settings"
 
-#: src/components/ChatModal.tsx:529
+#: src/components/ChatModal.tsx:532
 msgid "Several people are typing…"
 msgstr "Several people are typing…"
 
@@ -1167,7 +1171,7 @@ msgstr "Title is required."
 msgid "Today"
 msgstr "Today"
 
-#: src/components/ChatModal.tsx:632
+#: src/components/ChatModal.tsx:635
 msgid "Type a message…"
 msgstr "Type a message…"
 

src/locales/fr.po

@@ -30,12 +30,12 @@ msgstr "{0, plural, one {# reco} other {# recos}}"
 
 #. placeholder {0}: names[0]
 #. placeholder {1}: names[1]
-#: src/components/ChatModal.tsx:528
+#: src/components/ChatModal.tsx:531
 msgid "{0} and {1} are typing…"
 msgstr "{0} et {1} sont en train d'écrire…"
 
 #. placeholder {0}: names[0]
-#: src/components/ChatModal.tsx:527
+#: src/components/ChatModal.tsx:530
 msgid "{0} is typing…"
 msgstr "{0} est en train d'écrire…"
 
@@ -58,8 +58,8 @@ msgstr "{visibleCount, plural, one {# commentaire} other {# commentaires}}"
 msgid "← Back"
 msgstr "← Retour"
 
-#: src/pages/Dump.tsx:264
-#: src/pages/Dump.tsx:494
+#: src/pages/Dump.tsx:291
+#: src/pages/Dump.tsx:521
 #: src/pages/DumpEdit.tsx:181
 msgid "← Back to all dumps"
 msgstr "← Retour à toutes les recos"
@@ -78,7 +78,7 @@ msgstr "+ Inviter quelqu'un"
 msgid "+ New playlist"
 msgstr "+ Nouvelle collection"
 
-#: src/pages/Dump.tsx:335
+#: src/pages/Dump.tsx:362
 msgid "+ Playlist"
 msgstr "+ Collection"
 
@@ -202,7 +202,7 @@ msgstr "Impossible de se connecter au serveur de mises à jour en direct. Les vo
 #: src/components/CommentThread.tsx:124
 #: src/components/ConfirmModal.tsx:32
 #: src/components/form/FormActions.tsx:32
-#: src/pages/Dump.tsx:376
+#: src/pages/Dump.tsx:403
 #: src/pages/DumpEdit.tsx:460
 #: src/pages/PlaylistDetail.tsx:920
 #: src/pages/UserPublicProfile.tsx:1674
@@ -214,8 +214,8 @@ msgstr "Annuler"
 msgid "Cancel removal"
 msgstr "Annuler la suppression"
 
-#: src/components/ChatModal.tsx:619
-#: src/components/ChatModal.tsx:620
+#: src/components/ChatModal.tsx:622
+#: src/components/ChatModal.tsx:623
 msgid "Cancel reply"
 msgstr "Annuler la réponse"
 
@@ -248,7 +248,7 @@ msgstr "Changer le mot de passe…"
 #: src/components/ChatButton.tsx:17
 #: src/components/ChatFab.tsx:49
 #: src/components/ChatFab.tsx:50
-#: src/components/ChatModal.tsx:533
+#: src/components/ChatModal.tsx:536
 msgid "Chat"
 msgstr "Tribune"
 
@@ -426,7 +426,7 @@ msgstr "Plus tôt"
 #: src/components/ChatModal.tsx:172
 #: src/components/ChatModal.tsx:173
 #: src/components/CommentThread.tsx:367
-#: src/pages/Dump.tsx:490
+#: src/pages/Dump.tsx:517
 #: src/pages/PlaylistDetail.tsx:625
 msgid "Edit"
 msgstr "Modifier"
@@ -445,7 +445,7 @@ msgstr "Modifier le titre"
 #. placeholder {0}: relativeTime(message.updatedAt)
 #: src/components/ChatModal.tsx:152
 #: src/components/CommentThread.tsx:317
-#: src/pages/Dump.tsx:429
+#: src/pages/Dump.tsx:456
 #: src/pages/PlaylistDetail.tsx:664
 msgid "edited {0}"
 msgstr "modifié {0}"
@@ -455,7 +455,7 @@ msgstr "modifié {0}"
 #. placeholder {0}: message.updatedAt.toLocaleString()
 #: src/components/ChatModal.tsx:150
 #: src/components/CommentThread.tsx:315
-#: src/pages/Dump.tsx:427
+#: src/pages/Dump.tsx:454
 #: src/pages/PlaylistDetail.tsx:661
 msgid "Edited {0}"
 msgstr "Modifié le {0}"
@@ -632,6 +632,10 @@ msgstr "Tendances"
 msgid "If that address is registered you'll receive a reset link shortly."
 msgstr "Si cette adresse est enregistrée, vous recevrez un lien de réinitialisation sous peu."
 
+#: src/pages/Dump.tsx:551
+msgid "In collections"
+msgstr "Dans les collections"
+
 #: src/pages/UserRegister.tsx:96
 msgid "Invalid invite"
 msgstr "Invitation invalide"
@@ -675,11 +679,11 @@ msgstr "Mises à jour en direct indisponibles."
 msgid "Load more"
 msgstr "Charger plus"
 
-#: src/components/ChatModal.tsx:546
+#: src/components/ChatModal.tsx:549
 msgid "Load older messages"
 msgstr "Charger les messages plus anciens"
 
-#: src/pages/Dump.tsx:240
+#: src/pages/Dump.tsx:267
 #: src/pages/DumpEdit.tsx:157
 msgid "Loading dump…"
 msgstr "Chargement de la reco…"
@@ -705,7 +709,7 @@ msgid "Loading profile…"
 msgstr "Chargement du profil…"
 
 #: src/components/CategoryManager.tsx:52
-#: src/components/ChatModal.tsx:545
+#: src/components/ChatModal.tsx:548
 #: src/components/PlaylistMembershipPanel.tsx:28
 #: src/components/TextEditor.tsx:289
 #: src/components/UserListPopover.tsx:192
@@ -824,7 +828,7 @@ msgstr "Pas encore de collections suivies."
 msgid "No invitees yet."
 msgstr "Aucun invité pour le moment."
 
-#: src/components/ChatModal.tsx:553
+#: src/components/ChatModal.tsx:556
 msgid "No messages yet. Say hello!"
 msgstr "Aucun message pour l'instant. Dites bonjour !"
 
@@ -942,7 +946,7 @@ msgstr "Publication…"
 #: src/components/JournalCard.tsx:121
 #: src/components/PlaylistCard.tsx:73
 #: src/components/PlaylistMembershipPanel.tsx:55
-#: src/pages/Dump.tsx:435
+#: src/pages/Dump.tsx:462
 #: src/pages/PlaylistDetail.tsx:644
 msgid "private"
 msgstr "privé"
@@ -984,7 +988,7 @@ msgstr "Inscription…"
 msgid "Registration failed"
 msgstr "Inscription échouée"
 
-#: src/pages/Dump.tsx:502
+#: src/pages/Dump.tsx:529
 msgid "Related"
 msgstr "Connexe"
 
@@ -1014,7 +1018,7 @@ msgstr "Remplacer le fichier"
 msgid "Reply"
 msgstr "Répondre"
 
-#: src/components/ChatModal.tsx:609
+#: src/components/ChatModal.tsx:612
 msgid "Replying to"
 msgstr "En réponse à"
 
@@ -1035,7 +1039,7 @@ msgstr "Réinitialiser le mot de passe"
 msgid "Reset to default"
 msgstr "Réinitialiser par défaut"
 
-#: src/pages/Dump.tsx:257
+#: src/pages/Dump.tsx:284
 #: src/pages/DumpEdit.tsx:174
 msgid "Retry"
 msgstr "Réessayer"
@@ -1046,7 +1050,7 @@ msgstr "Rôle"
 
 #: src/components/ChatModal.tsx:222
 #: src/components/CommentThread.tsx:328
-#: src/pages/Dump.tsx:368
+#: src/pages/Dump.tsx:395
 #: src/pages/DumpEdit.tsx:463
 #: src/pages/PlaylistDetail.tsx:927
 #: src/pages/UserPublicProfile.tsx:1666
@@ -1056,7 +1060,7 @@ msgstr "Enregistrer"
 
 #: src/components/ChangePasswordModal.tsx:100
 #: src/components/CommentThread.tsx:329
-#: src/pages/Dump.tsx:367
+#: src/pages/Dump.tsx:394
 #: src/pages/PlaylistDetail.tsx:923
 #: src/pages/ResetPassword.tsx:126
 #: src/pages/UserPublicProfile.tsx:1663
@@ -1082,7 +1086,7 @@ msgstr "Recherche échouée"
 msgid "Searching…"
 msgstr "Recherche…"
 
-#: src/components/ChatModal.tsx:655
+#: src/components/ChatModal.tsx:658
 msgid "Send"
 msgstr "Envoyer"
 
@@ -1107,7 +1111,7 @@ msgstr "Définir un nouveau mot de passe"
 msgid "Settings"
 msgstr "Paramètres"
 
-#: src/components/ChatModal.tsx:529
+#: src/components/ChatModal.tsx:532
 msgid "Several people are typing…"
 msgstr "Plusieurs personnes écrivent…"
 
@@ -1167,7 +1171,7 @@ msgstr "Un titre est requis."
 msgid "Today"
 msgstr "Aujourd'hui"
 
-#: src/components/ChatModal.tsx:632
+#: src/components/ChatModal.tsx:635
 msgid "Type a message…"
 msgstr "Écrivez un message…"
 

src/pages/Dump.tsx

@@ -11,14 +11,17 @@ import { API_URL, VALIDATION } from "../config/api.ts";
 import type {
   Comment,
   Dump,
+  Playlist,
   PublicUser,
   RawComment,
   RawDump,
+  RawPlaylist,
   UpdateDumpRequest,
 } from "../model.ts";
 import {
   deserializeComment,
   deserializeDump,
+  deserializePlaylist,
   deserializePublicUser,
   parseAPIResponse,
 } from "../model.ts";
@@ -33,6 +36,7 @@ import RichContentCard from "../components/RichContentCard.tsx";
 import FilePreview from "../components/FilePreview.tsx";
 import { VoteButton } from "../components/VoteButton.tsx";
 import { DumpCard } from "../components/DumpCard.tsx";
+import { PlaylistCard } from "../components/PlaylistCard.tsx";
 import { PageShell } from "../components/PageShell.tsx";
 import { PageError } from "../components/PageError.tsx";
 import { Markdown } from "../components/Markdown.tsx";
@@ -67,6 +71,7 @@ export function Dump() {
 
   const [comments, setComments] = useState<Comment[]>([]);
   const [relatedDumps, setRelatedDumps] = useState<Dump[]>([]);
+  const [collections, setCollections] = useState<Playlist[]>([]);
 
   const [titleEditing, setTitleEditing] = useState(false);
   const [titleDraft, setTitleDraft] = useState("");
@@ -82,6 +87,7 @@ export function Dump() {
     removeVote,
     lastDumpEvent,
     lastCommentEvent,
+    lastPlaylistEvent,
     connectionEpoch,
   } = useWS();
 
@@ -180,6 +186,28 @@ export function Dump() {
     return () => controller.abort();
   }, [selectedDump, token]);
 
+  // Fetch the collections this dump appears in (public ones, plus the
+  // viewer's own private ones — the server does the filtering)
+  useEffect(() => {
+    if (!selectedDump) return;
+    const controller = new AbortController();
+    fetch(`${API_URL}/api/dumps/${selectedDump}/playlists`, {
+      signal: controller.signal,
+      headers: token ? { Authorization: `Bearer ${token}` } : {},
+    })
+      .then((r) => r.json())
+      .then((body) => {
+        if (body.success) {
+          setCollections((body.data as RawPlaylist[]).map(deserializePlaylist));
+        }
+      })
+      .catch(() => {});
+    return () => controller.abort();
+    // lastPlaylistEvent: adding/removing this dump, flipping a collection's
+    // visibility or deleting it all change the list — playlist events are rare
+    // enough to just refetch on any of them.
+  }, [selectedDump, token, lastPlaylistEvent]);
+
   // Scroll to and highlight a comment when navigating to #comment-{id}
   useEffect(() => {
     if (!location.hash.startsWith("#comment-")) return;
@@ -517,6 +545,20 @@ export function Dump() {
           </section>
         )}
 
+        {/* In collections (playlists containing this dump) */}
+        {collections.length > 0 && (
+          <section className="related-section collections-section">
+            <h2 className="related-section-title">
+              <Trans>In collections</Trans>
+            </h2>
+            <ul className="dump-feed">
+              {collections.map((collection) => (
+                <PlaylistCard key={collection.id} playlist={collection} />
+              ))}
+            </ul>
+          </section>
+        )}
+
         {/* Comments */}
         <CommentThread
           dumpId={dump.id}