feat: Buddy System & Bulk Scanner

- Add Buddy linking via QR code/handshake (buddy_invites table)
- Add Bulk Scanner for rapid-fire bottle scanning in sessions
- Add processing_status to bottles for background AI analysis
- Fix offline OCR with proper tessdata caching in Service Worker
- Fix Supabase GoTrueClient singleton warning
- Add collection refresh after offline sync completes

New components:
- BuddyHandshake.tsx - QR code display and code entry
- BulkScanSheet.tsx - Camera UI with capture queue
- BottleSkeletonCard.tsx - Pending bottle display
- useBulkScanner.ts - Queue management hook
- buddy-link.ts - Server actions for buddy linking
- bulk-scan.ts - Server actions for batch processing

src/app/page.tsx

@@ -98,9 +98,17 @@ export default function Home() {
             }
         });
 
+        // Listen for collection updates (e.g., after offline sync completes)
+        const handleCollectionUpdated = () => {
+            console.log('[Home] Collection update event received, refreshing...');
+            fetchCollection();
+        };
+        window.addEventListener('collection-updated', handleCollectionUpdated);
+
         return () => {
             subscription.unsubscribe();
             document.removeEventListener('visibilitychange', handleVisibilityChange);
+            window.removeEventListener('collection-updated', handleCollectionUpdated);
         };
     }, []);