Fix Lyria silent failures and surface generation status in the player.

Robust candidate-part parsing, quota-aware errors, live composing feedback, and two new desert dub tracks in the library.

Co-authored-by: Cursor <cursoragent@cursor.com>

gateway/player.html

@@ -267,7 +267,10 @@
     font-size: 0.75rem;
     color: var(--muted);
     text-align: center;
+    line-height: 1.4;
   }
+  .status.generating { color: var(--accent); }
+  .status.error { color: #ff5c7a; }
   .stack {
     font-size: 0.7rem;
     color: #555568;
@@ -518,6 +521,7 @@
   let currentTrackId = null;
   let radioSettings = { playback: { shuffle: true, mix_existing_and_new: true, new_song_chance: 0.35 } };
   let savingSettings = false;
+  let lastGenError = null;
 
   function fmtUsd(n) {
     return '$' + Number(n || 0).toFixed(2);
@@ -539,6 +543,34 @@
     loadLibrary();
   }
 
+  function applyGenerationState(gen) {
+    if (!gen) return;
+    if (gen.busy) {
+      genBtn.disabled = true;
+      const title = gen.track_title ? ` "${gen.track_title}"` : '';
+      const phase = gen.phase === 'planning'
+        ? `DeepSeek planning${title}…`
+        : `Lyria composing${title}… (~30s)`;
+      statusEl.textContent = phase;
+      statusEl.classList.add('generating');
+      statusEl.classList.remove('error');
+      return;
+    }
+    genBtn.disabled = false;
+    statusEl.classList.remove('generating');
+    if (gen.error) {
+      statusEl.textContent = gen.error;
+      statusEl.classList.add('error');
+      if (gen.error !== lastGenError) {
+        lastGenError = gen.error;
+        addBubble('dj', `Couldn't finish that track: ${gen.error}`);
+      }
+      return;
+    }
+    lastGenError = null;
+    statusEl.classList.remove('error');
+  }
+
   function updateDashboard(stats) {
     if (!stats) return;
     const today = stats.today || {};
@@ -552,6 +584,7 @@
       radioSettings.playback = stats.playback;
       syncSettingsUI(stats.playback);
     }
+    applyGenerationState(stats.generation);
     updateModeBadge();
   }
 
@@ -568,11 +601,12 @@
     skipBtn.textContent = shuffle ? 'Shuffle next' : 'Skip';
   }
 
-  async function loadStats() {
+  async function loadStats(returnData = false) {
     try {
       const res = await fetch(`${API}/api/stats`);
       const data = await res.json();
       updateDashboard(data);
+      return returnData ? data : undefined;
     } catch (_) {}
   }
 
@@ -704,7 +738,8 @@
       const data = await res.json();
       if (data.reply) addBubble('dj', data.reply);
       if (data.generating) {
-        statusEl.textContent = 'DJ is composing your request…';
+        statusEl.textContent = 'DeepSeek planning your request…';
+        statusEl.classList.add('generating');
         pollForNewTrack();
       }
     } catch (_) {
@@ -722,10 +757,17 @@
     clearInterval(pollTimer);
     pollTimer = setInterval(async () => {
       n += 1;
+      const stats = await loadStats(true);
+      if (stats?.generation?.busy) return;
+      if (stats?.generation?.error) {
+        clearInterval(pollTimer);
+        return;
+      }
       await refreshNow();
-      await loadStats();
+      const now = await fetch(`${API}/api/now`).then(r => r.json()).catch(() => null);
+      if (now?.track?.track_id !== currentTrackId) clearInterval(pollTimer);
       if (n > 60) clearInterval(pollTimer);
-    }, 5000);
+    }, 3000);
   }
 
   async function refreshNow() {
@@ -756,6 +798,10 @@
       } else if (data.status === 'limit') {
         statusEl.textContent = data.message || 'Daily limit reached';
         updateDashboard({ today: data.budget, costs: radioSettings.costs });
+      } else if (data.status === 'error') {
+        statusEl.textContent = data.message || 'Generation failed';
+        statusEl.classList.add('error');
+        applyGenerationState(data.generation || { error: data.message });
       } else if (data.status === 'ok') {
         if (data.track) applyTrack(data.track, data.source || 'generated');
         await loadStats();
@@ -780,8 +826,12 @@
         statusEl.textContent = data.message || 'Daily limit — no more new songs today';
       } else if (data.status === 'busy') {
         statusEl.textContent = data.message;
+        statusEl.classList.add('generating');
         pollForNewTrack();
         return;
+      } else if (data.status === 'error') {
+        statusEl.textContent = data.message || 'Generation failed';
+        statusEl.classList.add('error');
       } else if (data.status === 'ok' && data.track) {
         applyTrack(data.track, data.source);
       } else if (data.status === 'idle') {