Fix cell celebration: accurate count from DB, trigger on fallback path

- Celebration now refreshes stats from Supabase before displaying count
- Added celebration to CAVE-unavailable fallback path (was only on CAVE success)
- Both Cell Library Complete and lightbulb menu now trigger celebration

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: amyleesterling

src/components/CellLibraryPanel.vue

@@ -283,7 +283,8 @@ import nurroCelebrate3 from '../../static/nurro/nurro-celebrate3.png';
 import nurroExperiment from '../../static/nurro/nurro-experiment.png';
 const NURRO_IMAGES = [nurroSuccess, nurroTrophy, nurroCelebrate, nurroDance, nurroAtHome, nurroConfetti, nurroCelebrate2, nurroPopcorn, nurroCelebrate3, nurroExperiment];
 
-function triggerCellCelebration() {
+async function triggerCellCelebration() {
+  await backend.loadUserStats(); // refresh from DB for accurate count
   const statsStore = useUserStatsStore();
   const total = statsStore.stats.cellsSubmitted;
   const nurro = NURRO_IMAGES[Math.floor(Math.random() * NURRO_IMAGES.length)];

src/widgets/lightbulb_service.ts

@@ -276,9 +276,10 @@ export async function setCellComplete(
           statsStore.setStats({ cellsSubmitted: statsStore.stats.cellsSubmitted + 1 });
           statsStore.logDailyCellComplete();
         } catch { /* non-critical */ }
-        // Celebration!
+        // Celebration! Read fresh count from Supabase for accuracy
         try {
           const backend = useProofreadingBackendStore();
+          await backend.loadUserStats(); // refresh from DB
           const statsStore = useUserStatsStore();
           const total = statsStore.stats.cellsSubmitted;
           const nurro = NURRO_IMAGES[Math.floor(Math.random() * NURRO_IMAGES.length)];
@@ -334,6 +335,20 @@ export async function setCellComplete(
       );
     }
   } catch { /* non-critical */ }
+  // Celebration on complete (fallback path — CAVE was unavailable)
+  if (complete) {
+    try {
+      const backend = useProofreadingBackendStore();
+      await backend.loadUserStats();
+      const statsStore = useUserStatsStore();
+      const total = statsStore.stats.cellsSubmitted;
+      const nurro = NURRO_IMAGES[Math.floor(Math.random() * NURRO_IMAGES.length)];
+      backend.pendingCellCelebration = {
+        totalCells: total,
+        imageUrl: nurro,
+      };
+    } catch { /* non-critical */ }
+  }
   return true;
 }