feat(mobile): Android prep — icons/splash assets, permissions, FCM setup

- resources/: 1024 icon.png + 2732 splash.png/splash-dark.png generated from the
  PWA icon + brand blue; wired @capacitor/assets (npm run assets) + splash-screen plugin.
- ANDROID_SETUP.md: end-to-end guide (SDK setup, cap add android, manifest permissions,
  Firebase/google-services.json + Gradle, run, Play AAB build) for package com.bizgaze.connect.
- android-permissions.xml: paste-ready POST_NOTIFICATIONS + camera/mic/WebRTC perms.
- mobile/README links the guide; setup adds `npm run assets`.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

mobile/README.md

@@ -4,6 +4,9 @@ A Capacitor shell that loads the live Connect web UI (`server.url` in
 `capacitor.config.json`) and adds native push, camera/mic, and store distribution. See the
 overall plan in [../CLIENTS.md](../CLIENTS.md).
 
+> **Android:** follow the step-by-step in **[ANDROID_SETUP.md](ANDROID_SETUP.md)** (project
+> generation, icons/splash, permissions, Firebase/FCM, run, and Play Store build).
+
 ## Prerequisites
 - Node + `npm install` here.
 - **Android:** Android Studio + SDK.
@@ -12,6 +15,7 @@ overall plan in [../CLIENTS.md](../CLIENTS.md).
 ## Setup
 ```bash
 npm install
+npm run assets           # generate app icons + splash from resources/
 npx cap add android
 npx cap add ios          # macOS only
 npx cap sync