feat: add Linux packaging support (#70)

* Refactor CI workflow and add Linux packaging support; update app title to "Vaani"

* Refactor CI workflow to separate setup, testing, and building steps; add Linux AppImage packaging support

* use reusable workflow

* Make Flutter version input optional in setup-env action and rename step in workflow

* Replace setup-env action with reusable flutter-setup workflow; streamline CI configuration and enhance dependency management

* Add Flutter setup composite action for streamlined environment configuration

* Move repository checkout step to the main workflow for better control and clarity in the CI process

* Remove unnecessary shell specification for Flutter dependency setup to simplify action configuration

* Add shell specification for Flutter dependency command to enhance cross-platform compatibility

* Comment out static analysis step in Flutter test workflow to streamline CI process

* Add repository checkout and Flutter environment setup steps to CI workflow

* Add installation of Linux dependencies for Flutter test workflow

* Remove obsolete Flutter setup and release workflows to streamline CI configuration

* Fix formatting in make_config.yaml by ensuring newline at end of file

.github/workflows/flutter-ci.yaml

@@ -0,0 +1,182 @@
+name: Flutter CI & Release
+
+on:
+  push:
+    branches: [main]
+    tags: ["v*.*.*"]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Setup Flutter Environment
+        uses: ./.github/actions/flutter-setup # Path to the composite action directory
+        # Pass inputs if needed (optional, using defaults here)
+        # with:
+        #   flutter-channel: 'stable'
+        #   java-version: '17'
+      # Debug: Echo current directory contents
+      - name: List root directory contents
+        run: |
+          pwd
+          ls -la
+
+      # Debug: Recursive directory structure
+      - name: Show full directory structure
+        run: |
+          echo "Full directory structure:"
+          tree -L 3
+
+      # Debug: Submodule status and details
+      - name: Check submodule status
+        run: |
+          echo "Submodule status:"
+          git submodule status
+
+          echo "\nSubmodule details:"
+          git submodule foreach 'echo $path: && pwd && ls -la'
+
+      # - name: Run static analysis
+      #   run: flutter analyze
+
+      - name: Run tests
+        run: flutter test
+
+  build_android:
+    name: Build Android APKs
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Setup Flutter Environment
+        uses: ./.github/actions/flutter-setup # Path to the composite action directory
+        with:
+          flutter-channel: stable
+          java-version: 17
+
+      - name: Decode android/upload.jks
+        run: echo "${{ secrets.UPLOAD_KEYSTORE_JKS }}" | base64 --decode > android/upload.jks
+
+      - name: Decode android/key.properties
+        run: echo "${{ secrets.KEY_PROPERTIES }}" | base64 --decode > android/key.properties
+
+      - name: Build APKs
+        run: flutter build apk --release --split-per-abi
+
+      - name: Build Universal APK
+        run: flutter build apk --release
+
+      - name: Rename Universal APK
+        run: mv build/app/outputs/flutter-apk/{app-release,app-universal-release}.apk
+
+      - name: Build App Bundle
+        run: flutter build appbundle --release
+
+      - name: Upload Android APK Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: android-release-artifacts
+          path: |
+            build/app/outputs/flutter-apk/*-release*.apk
+            build/app/outputs/bundle/release/*.aab
+
+  build_linux:
+    needs: test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Setup Flutter Environment
+        uses: ./.github/actions/flutter-setup # Path to the composite action directory
+
+      - name: Install Linux dependencies
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev liblzma-dev
+        shell: bash
+      - name: setup fastforge
+        run: |
+          dart pub global activate fastforge
+      - name: Build Linux AppImage
+        run: fastforge package --platform linux --targets deb
+
+      - name: Upload deb Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: linux-release-artifacts
+          path: |
+            dist/*/*.deb
+
+  # Job 4: Create GitHub Release (NEW - runs only on tag pushes)
+  create_release:
+    name: Create GitHub Release
+    needs: [build_android, build_linux] # Depends on successful builds
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # Need write access to create release
+    # <<< CONDITION: Only run this job if the trigger was a tag starting with 'v'
+    if: startsWith(github.ref, 'refs/tags/v')
+
+    steps:
+      # No checkout needed if only downloading artifacts and using context variables
+      # - name: Checkout repository
+      #   uses: actions/checkout@v4
+
+      # Download artifacts created earlier IN THIS SAME WORKFLOW RUN
+      - name: Download Android Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: android-release-artifacts
+          path: ./release-artifacts/android
+
+      - name: Download Linux Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: linux-release-artifacts
+          path: ./release-artifacts/linux
+
+      - name: List downloaded files (for debugging)
+        run: ls -R ./release-artifacts
+        shell: bash
+
+      # Extract version info from the tag
+      - name: Extract Version from Tag
+        id: version
+        run: |
+          TAG_NAME=${GITHUB_REF#refs/tags/}
+          VERSION=${TAG_NAME#v}
+          echo "tag=${TAG_NAME}" >> $GITHUB_OUTPUT
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+        shell: bash
+
+      # Generate release notes (optional, consider its configuration for tags)
+      - name: Generate Release Notes
+        id: generate_release_notes
+        uses: release-drafter/release-drafter@v6
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      # Create the GitHub Release using downloaded artifacts
+      - name: Create GitHub Release
+        uses: ncipollo/release-action@v1
+        with:
+          artifacts: "./release-artifacts/**/*" # Use downloaded artifacts
+          name: Release v${{ steps.version.outputs.version }}
+          tag: ${{ github.ref }}
+          body: ${{ steps.generate_release_notes.outputs.body }}
+          # token: ${{ secrets.GITHUB_TOKEN }} # Usually inferred