Plex: group connection failures so public/relay results are visible

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server.js

@@ -226,7 +226,13 @@ async function plexApi(req, res) {
         } catch (e) { tried.push(`${c.label}: ${e.cause?.code || e.name || e.message}`); }
       }
       console.error('Plex connect failed for', r.name, tried);
-      return json(res, 502, { error: 'Could not reach this server. Tried: ' + tried.slice(0, 8).join('; ') });
+      // Group identical outcomes so a long list of LAN addresses cannot hide the public/relay results.
+      const groups = new Map();
+      for (const t of tried) { const i = t.indexOf(': '), label = t.slice(0, i), why = t.slice(i + 2).replace(/\s*\(id [^)]*\)/, '');
+        const seen = (t.match(/\(id ([^…]+)…/) || [])[1]; const key = why + (seen ? ` (id ${seen}…)` : '');
+        groups.set(key, [...(groups.get(key) || []), label]); }
+      const summary = [...groups].map(([why, labels]) => `${why}: ${labels.join(', ')}`).join(' | ');
+      return json(res, 502, { error: `Could not reach ${r.name} (id ${String(id).slice(0, 6)}…). ` + summary });
     }
     if (u.pathname === '/api/plex/logout' && req.method === 'POST') {
       setCookies(req, res, { plex_token: '', plex_srv: '', plex_stk: '', plex_name: '' });