Fix EAS local builds and resolve require cycles

- Add dotenv-cli for EAS local builds to load env vars
- Break circular dependencies in store/hooks imports
- Add env var validation with clear error messages
- Remove hardcoded Sentry auth token from sentry.properties
- Add .ipa files to .gitignore

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/mobile/package.json

@@ -12,7 +12,11 @@
     "typecheck": "tsc --noEmit",
     "test": "jest",
     "test:watch": "jest --watch",
-    "test:ci": "jest --runInBand --ci"
+    "test:ci": "jest --runInBand --ci",
+    "build:ios": "dotenv -e .env -- eas build --platform ios --profile production",
+    "build:ios:local": "dotenv -e .env -- eas build --platform ios --profile production --local",
+    "build:android": "dotenv -e .env -- eas build --platform android --profile production",
+    "build:android:local": "dotenv -e .env -- eas build --platform android --profile production --local"
   },
   "dependencies": {
     "@expo/ngrok": "^4.1.0",
@@ -71,6 +75,7 @@
     "@types/jest": "^30.0.0",
     "@types/react": "~18.3.12",
     "@types/react-test-renderer": "^19.1.0",
+    "dotenv-cli": "^11.0.0",
     "jest": "^29.7.0",
     "jest-expo": "~52.0.0",
     "react-test-renderer": "^18.3.1",