Add mobile services, web proxy, and Gemma4 agent loop

- Mobile: add push notification and calendar sync services with full test suite (calendar, eventStore, notifications,
  screens)
- Mobile: add EAS build config and Jest setup
- Web: add API proxy, update useDestinationStation/useJourneys hooks, add middleware tests
- Web: update next.config and rebuild
- Agent: add Gemma4-based agent loop (agent_base, ttl_agent, ts_agent)
- Docs: add privacy policy, post-MVP plan, and aider rules

apps/web/.next/required-server-files.json

@@ -1,7 +1,10 @@
 {
   "version": 1,
   "config": {
-    "env": {},
+    "env": {
+      "CORS_ALLOWED_ORIGINS": "*",
+      "DEPLOYMENT_URL": "http://localhost:3000"
+    },
     "webpack": null,
     "typescript": {
       "ignoreBuildErrors": false