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

package.json

@@ -27,10 +27,12 @@
     "fuse.js": "^7.1.0",
     "heic2any": "^0.0.4",
     "lucide-react": "^0.468.0",
+    "nanoid": "^5.1.6",
     "next": "16.1.0",
     "openai": "^6.15.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
+    "react-qr-code": "^2.0.18",
     "recharts": "^3.6.0",
     "sharp": "^0.34.5",
     "tesseract.js": "^7.0.0",