The Gradle wrapper jar and properties were already tracked but the matching
gradlew (bash) and gradlew.bat (Windows) launcher scripts were not, leaving
the wrapper unusable without a separately-installed Gradle. Adding both so
./gradlew works on a fresh clone.
.flutter-plugins is a generated file containing absolute machine-specific
pub-cache paths and is explicitly marked "do not check into version control"
in its own header. Adding it to mobile/.gitignore alongside the already-
ignored .flutter-plugins-dependencies.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Backend: Add /voice/token endpoint with AccessToken + VoiceGrant for
mobile VoIP, implement unhold_call() with call leg detection, wire FCM
push notifications into call queue and webhook missed call handlers,
add data-only FCM message support for Android background wake, and add
Twilio API Key / Push Credential settings fields.
Flutter app: Full softphone with Twilio Voice SDK integration, JWT auth
with auto-refresh, SSE real-time queue updates, FCM push notifications,
Material 3 UI with dashboard, active call screen, dialpad, and call
controls (mute/speaker/hold/transfer).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
