Recover related videos with bounded discovery and retryable fallbacks

server/server.js

@@ -61,6 +61,7 @@ import { registerIntakeRoutes } from './p2p-intake.js';
 import { createP2pHub, holdersPayload, createRehydrator } from './p2p-hub.js';
 import { sha256Range } from './hash.js';
 import * as innertube from './innertube.js';
+import { createRelatedService, registerRelatedRoute } from './related.js';
 import * as searchCacheDb from './search-cache.js';
 import { ingest as collectVideoMetadata, syncListening, linkListening, startThumbnails } from './video-catalog.js';
 import { registerCatalogRoutes } from './recommendations.js';
@@ -488,6 +489,25 @@ app.get('/api/search', async (c) => {
   }
 });
 
+// Eight related cards should not depend on a 200-result deep search succeeding.
+registerRelatedRoute(app, createRelatedService({
+  next: (id, timeoutMs) => process.env.SEARCH_INNERTUBE === '0' ? Promise.reject(new Error('InnerTube disabled')) : innertube.related(id, { timeoutMs }),
+  search: async (query, budgetMs) => {
+    const start = Date.now();
+    try {
+      if (process.env.SEARCH_INNERTUBE !== '0') {
+        const cards = await innertube.search(query, { timeoutMs: Math.min(3500, budgetMs) });
+        if (cards.length) return cards;
+      }
+    } catch { /* use the existing resilient yt-dlp search path */ }
+    const remaining = budgetMs - (Date.now() - start);
+    if (remaining <= 0) throw new Error('Related search timed out');
+    return parseCards(await runYtdlpResilient([`ytsearch12:${query}`, '--dump-json', '--flat-playlist', '--no-warnings', '--ignore-errors', '--socket-timeout', '4', '--retries', '1'], { signal: AbortSignal.timeout(Math.min(6000, remaining)) }));
+  },
+  local: query => searchCacheDb.searchVideos(query, 20),
+  collect: cards => collectVideoMetadata(cards, 'related'),
+}));
+
 // GET /api/channel?c=<channel>
 // Channel listing that works for every kind of channel, not one-off cases:
 //   1. /videos, /streams, /shorts tabs        — normal channels