Phase 2: AI Chat, Calendar, Odoo connector, PWA

- AI Chat endpoint (/api/v1/chat) with Claude API context
- Calendar page with FullCalendar.js (day/week/month)
- Odoo API connector (import/export/webhook)
- PWA manifest + service worker for offline
- SW register component

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

api/package.json

@@ -13,6 +13,7 @@
   "license": "ISC",
   "type": "commonjs",
   "dependencies": {
+    "@anthropic-ai/sdk": "^0.80.0",
     "@fastify/cors": "^11.2.0",
     "@fastify/helmet": "^13.0.2",
     "@fastify/jwt": "^10.0.0",