feat(android): add run:device task for standalone APK install

- Add android:run:device task that builds release APK, signs with debug
  keystore, and installs on physical device (mirrors ios:run:device)
- Fix android:build:apk/aab to use correct --apk/--aab flag syntax
- Remove --open flag from android:dev:device for auto-deployment
- Update CLAUDE.md with Taskfile-based Android workflow commands

Author: pythoninthegrass

CLAUDE.md

@@ -48,20 +48,26 @@ task ios:testflight
 # Upload to App Store
 task ios:release
 
-# Development (Android emulator - requires Android SDK/NDK setup)
-npx tauri android dev
+# Development (Android emulator)
+task android:dev
 
-# Build (Android release APK and AAB)
-npx tauri android build
+# Development (physical Android device - hot-reload)
+task android:dev:device
 
-# Build via Fastlane (Android)
-fastlane android build
+# Build and install on physical Android device (standalone APK)
+task android:run:device
+
+# Build (Android APK for sideloading)
+task android:build:apk
+
+# Build (Android AAB for Google Play)
+task android:build:aab
 
 # Upload to Google Play Store beta track
-fastlane android beta
+task android:testflight
 
 # Upload to Google Play Store production
-fastlane android release
+task android:release
 
 # Clean build artifacts
 task clean
@@ -176,10 +182,10 @@ Tables:
 
 **Next Steps**:
 - iOS: Download simulator runtime from Xcode → Settings → Platforms
-- iOS: Test on simulator: `npx tauri ios dev`
+- iOS: Test on simulator: `task ios` or `task ios:dev`
 - iOS: Test on device: `task ios:run:device`
-- Android: Test on emulator: `npx tauri android dev` (requires emulator running)
-- Android: Test manual feature validation on emulator
+- Android: Test on emulator: `task android:dev`
+- Android: Test on device: `task android:run:device` (builds release APK, signs with debug key, installs)
 
 ## Context
 

src-tauri/Cargo.lock

@@ -95,14 +95,31 @@ tasks:
     silent: true
 
   dev:device:
-    desc: "Run on physical Android device"
+    desc: "Run on physical Android device (dev mode with hot-reload)"
     deps: [":npm:install", "init"]
     cmds:
-      - cmd: cd {{.TAURI_DIR}} && npx tauri android dev --open --host
+      - cmd: cd {{.TAURI_DIR}} && npx tauri android dev --host
         ignore_error: true
     interactive: true
     silent: true
 
+  run:device:
+    desc: "Build release APK, sign with debug key, and install on physical Android device"
+    deps: [":npm:install", "init"]
+    vars:
+      UNSIGNED_APK: "{{.TAURI_DIR}}/gen/android/app/build/outputs/apk/universal/release/app-universal-release-unsigned.apk"
+      SIGNED_APK: "{{.TAURI_DIR}}/gen/android/app/build/outputs/apk/universal/release/app-universal-release-signed.apk"
+      DEBUG_KEYSTORE: "{{.HOME}}/.android/debug.keystore"
+      APKSIGNER: "{{.ANDROID_HOME}}/build-tools/35.0.0/apksigner"
+    cmds:
+      - cd {{.TAURI_DIR}} && npx tauri android build --apk true --aab false
+      - |
+        rm -f "{{.SIGNED_APK}}"
+        "{{.APKSIGNER}}" sign --ks "{{.DEBUG_KEYSTORE}}" --ks-pass pass:android --out "{{.SIGNED_APK}}" "{{.UNSIGNED_APK}}"
+        adb install -r "{{.SIGNED_APK}}"
+        adb shell am start -n com.lunch.desktop/.MainActivity
+    silent: true
+
   build:
     desc: "Build for Android distribution (APK and AAB)"
     deps: [":npm:install", "init"]
@@ -114,14 +131,14 @@ tasks:
     desc: "Build APK only (for testing/sideloading)"
     deps: [":npm:install", "init"]
     cmds:
-      - cd {{.TAURI_DIR}} && npx tauri android build --apk
+      - cd {{.TAURI_DIR}} && npx tauri android build --apk true --aab false
     silent: true
 
   build:aab:
     desc: "Build AAB only (for Google Play)"
     deps: [":npm:install", "init"]
     cmds:
-      - cd {{.TAURI_DIR}} && npx tauri android build --aab
+      - cd {{.TAURI_DIR}} && npx tauri android build --apk false --aab true
     silent: true
 
   testflight: