ci: build release APK and publish a GitHub Release on main

Adds a Build APK workflow: on every push to main it builds the release
APK with Flutter 3.35.3 and publishes it as a GitHub Release tagged
with the pubspec version (v1.7.0 → xtremobile-v1.7.0.apk). On pull
requests and manual runs the APK is built and uploaded as an artifact
only. Bumps app version to 1.7.0+14 for this release.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0156exq7fejVrD3HKU3MmS8X

.github/workflows/build-apk.yml

@@ -0,0 +1,61 @@
+# Construit l'APK release et publie une GitHub Release à chaque mise à jour
+# de main (nouvelle version de l'app). Sur une pull request ou un lancement
+# manuel (workflow_dispatch), l'APK est seulement construit et déposé en
+# artifact — aucune release n'est publiée.
+name: Build APK
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '17'
+
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+          flutter-version: 3.35.3
+          cache: true
+
+      - name: Read app version from pubspec.yaml
+        id: version
+        run: echo "version=$(grep '^version:' pubspec.yaml | awk '{print $2}' | cut -d+ -f1)" >> "$GITHUB_OUTPUT"
+
+      - run: flutter pub get
+
+      - name: Build release APK
+        run: flutter build apk --release
+
+      - name: Rename APK with version
+        run: cp build/app/outputs/flutter-apk/app-release.apk "xtremobile-v${{ steps.version.outputs.version }}.apk"
+
+      - name: Upload APK artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: xtremobile-v${{ steps.version.outputs.version }}-apk
+          path: xtremobile-v${{ steps.version.outputs.version }}.apk
+
+      # La release n'est créée que sur main : un même numéro de version met à
+      # jour la release existante au lieu d'en créer une seconde.
+      - name: Publish GitHub Release
+        if: github.ref == 'refs/heads/main'
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: v${{ steps.version.outputs.version }}
+          name: XtremMobile v${{ steps.version.outputs.version }}
+          files: xtremobile-v${{ steps.version.outputs.version }}.apk
+          generate_release_notes: true

pubspec.yaml

@@ -1,7 +1,7 @@
 name: xtremobile
 description: High-performance IPTV Android Application with Xtream Codes API
 publish_to: 'none'
-version: 1.6.1+13
+version: 1.7.0+14
 
 environment:
   sdk: '>=3.0.0 <4.0.0'