feat: V13 — per-card "re-match this one file" (MNP 0.13)

A one-click alternative to the full "Fix match" search-and-pick flow, and
reachable without SSH (`meshbay-node video rematch` clears a whole group).

- MNP 0.13: tmdb_rematch / tmdb_rematch_ack (additive — an older node
  logs "unknown type", the button just does nothing). OP_TMDB_REMATCH,
  signed like tmdb_override (media_cache is shared node-wide).
- media_cache.drop_tmdb_match(file_id): forgets the match AND the
  override marker — deliberately stronger than clear_file_tmdb, since the
  operator is explicitly asking for a fresh resolution.
- webrtc_server: _do_tmdb_rematch / _admin_exec_tmdb_rematch, dispatch +
  admin-response routing, broadcasts tmdb_rematch_ack.
- transport.js: rematchTmdbMatch(fileId, signFn); 'tmdb_rematch' in the
  admin-op allowlist; tmdb_rematch_ack handled like tmdb_override_ack.
- video-app.js: a "Re-match" button beside "Fix match" in the detail
  modal (isNodeAdmin), then bumpMediaMetaGeneration(). video.rematch_one
  key in all ten locales.

docs/mediacenter.md §10.1: V8–V13 marked done.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018BMLQjqFGCize2KtNBT79v

1 files changed, 22 insertions, 1 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/transport.js b/packages/meshbay-hub/src/meshbay_hub/static/transport.js
index d6a28d9..5a6e36b 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/transport.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/transport.js
@@ -73,7 +73,7 @@ function _aborted() {
 // list is what lets a response two steps later be tied back to the right
 // one.
 const ADMIN_OP_TYPES = new Set([
-  'tmdb_override', 'tmdb_config', 'tmdb_enabled', 'video_root', 'audio_root',
+  'tmdb_override', 'tmdb_rematch', 'tmdb_config', 'tmdb_enabled', 'video_root', 'audio_root',
   'photo_roots',
   'musicbrainz_enabled', 'file_delete', 'dir_delete',
   'member_upload', 'apps_enabled', 'set_scan_settings', 'member_revoke',
@@ -916,6 +916,22 @@ class MeshBayTransport {
   }
 
   /**
+   * Drop one file's cached TMDB match so it re-resolves with the node's
+   * current matcher (§10.1/V13) — the one-click alternative to the full
+   * search-and-pick flow. Signed for the same reason as overrideTmdbMatch.
+   */
+  async rematchTmdbMatch(fileId, signFn) {
+    const msg = await this._sendAndWait({
+      type: 'tmdb_rematch', v: '0.7', file_id: fileId,
+    });
+    if (msg.type === 'error') throw new Error(msg.detail);
+    if (msg.type === 'admin_challenge') {
+      return this._authorizeAdminOp(msg, 'tmdb_rematch', `file_id=${fileId}`, signFn);
+    }
+    return msg;
+  }
+
+  /**
    * Set/clear a custom TMDB API token, and/or set the language TMDB is
    * queried in (e.g. "fr-FR") — one for the whole node, since both are one
    * operator's shared credential/cache, not a per-group concern (see
@@ -2032,6 +2048,11 @@ class MeshBayTransport {
         fileId: msg.file_id || '', tmdbId: msg.tmdb_id || '', mediaType: msg.media_type || '',
       });
     }
+    // Same shape: the operator dropped one file's match to have it
+    // re-resolved (§10.1/V13). No tmdbId — the node re-derives it.
+    if (msg.type === 'tmdb_rematch_ack' && this._onTmdbOverride) {
+      this._onTmdbOverride({ fileId: msg.file_id || '', tmdbId: '', mediaType: '' });
+    }
 
     // Same shape: the operator changed which folder is the Videos app's
     // entry point for this group.