fix(ci): revert lint/test/build-android to ubuntu-latest runner (self-hosted/linux unavailable)

.gitea/workflows/ci.yml

@@ -22,21 +22,16 @@ jobs:
   # ── Stage 1: Lint & static analysis ──────────────────────────────
   lint:
     name: Lint
-    runs-on: [self-hosted, linux]
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
       - name: Setup Flutter
-        run: |
+        uses: subosito/flutter-action@v2
-          # Direct Flutter SDK download — subosito/flutter-action queries
+        with:
-          # GitHub internal APIs that are unavailable on self-hosted Gitea runners.
+          flutter-version: ${{ env.FLUTTER_VERSION }}
-          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.44.8-stable.tar.xz" \
+          cache: true
-            -o flutter.tar.xz
-          tar -xf flutter.tar.xz
-          export PATH="$PWD/flutter/bin:$PATH"
-          flutter --version
-          echo "$PWD/flutter/bin" >> "$GITHUB_PATH" || echo "$PWD/flutter/bin" >> "$HOME/.env_path"
 
       - name: Install dependencies
         run: flutter pub get
@@ -55,21 +50,17 @@ jobs:
   # ── Stage 2: Unit & widget tests ─────────────────────────────────
   test:
     name: Test
-    runs-on: [self-hosted, linux]
+    runs-on: ubuntu-latest
     needs: [lint]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
       - name: Setup Flutter
-        run: |
+        uses: subosito/flutter-action@v2
-          # Direct Flutter SDK download — self-hosted Gitea runner (Linux)
+        with:
-          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.44.8-stable.tar.xz" \
+          flutter-version: ${{ env.FLUTTER_VERSION }}
-            -o flutter.tar.xz
+          cache: true
-          tar -xf flutter.tar.xz
-          export PATH="$PWD/flutter/bin:$PATH"
-          flutter --version
-          echo "$PWD/flutter/bin" >> "$GITHUB_PATH" || echo "$PWD/flutter/bin" >> "$HOME/.env_path"
 
       - name: Install dependencies
         run: flutter pub get
@@ -101,27 +92,17 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Java 17
-        run: |
+        uses: actions/setup-java@v4
-          # Direct Temurin JDK download — actions/setup-java queries GitHub APIs
+        with:
-          curl -fsSL "https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.12%2B7/OpenJDK17U-jdk_x64_linux_hotspot_17.0.12_7.tar.gz" \
+          distribution: temurin
-            -o jdk.tar.gz
+          java-version: "17"
-          mkdir -p "$HOME/jdk"
+          cache: gradle
-          tar -xzf jdk.tar.gz -C "$HOME/jdk" --strip-components=1
-          export JAVA_HOME="$HOME/jdk"
-          export PATH="$JAVA_HOME/bin:$PATH"
-          java -version
-          echo "JAVA_HOME=$JAVA_HOME" >> "$GITHUB_ENV" || export JAVA_HOME="$JAVA_HOME"
-          echo "$JAVA_HOME/bin" >> "$GITHUB_PATH" || export PATH="$JAVA_HOME/bin:$PATH"
 
       - name: Setup Flutter
-        run: |
+        uses: subosito/flutter-action@v2
-          # Direct Flutter SDK download — Linux build runner
+        with:
-          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.44.8-stable.tar.xz" \
+          flutter-version: ${{ env.FLUTTER_VERSION }}
-            -o flutter.tar.xz
+          cache: true
-          tar -xf flutter.tar.xz
-          export PATH="$PWD/flutter/bin:$PATH"
-          flutter --version
-          echo "$PWD/flutter/bin" >> "$GITHUB_PATH" || echo "$PWD/flutter/bin" >> "$HOME/.env_path"
 
       - name: Install Android SDK command-line tools
         run: |