feat: enhance mobile voice build and UI layout

- Updated AGENTS.md with new build commands for development and production.
- Added a new script in package.json for starting Expo with a specific hostname.
- Improved layout handling in DictationScreen by adding dynamic height calculations for dropdown menus and footers.
- Introduced new state variables to manage menu list heights and footer heights for better UI responsiveness.
- Enhanced QR code generation for mobile pairing in the serve command, allowing for a connect QR option without starting the server.

packages/mobile-voice/package.json

@@ -4,6 +4,7 @@
   "version": "1.0.0",
   "scripts": {
     "start": "expo start",
+    "expo:start": "REACT_NATIVE_PACKAGER_HOSTNAME=exos.husky-tilapia.ts.net expo start --dev-client --clear --host lan",
     "relay": "echo 'Use packages/apn-relay for APNs relay server'",
     "relay:legacy": "node ./relay/opencode-relay.mjs",
     "reset-project": "node ./scripts/reset-project.js",