Add auto-updater support for Linux with Gitea releases

.gitea/workflows/build.yml

@@ -5,6 +5,11 @@ on:
     branches:
       - main
       - dev
+    tags:
+      - 'v*'
+
+env:
+  TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
 
 jobs:
   build-windows:
@@ -92,6 +97,10 @@ jobs:
           cp src-tauri/target/release/bundle/appimage/*.AppImage src-tauri/target/release/bundle/appimage/Cinny-Linux-x64.AppImage
           cp src-tauri/target/release/bundle/deb/*.deb src-tauri/target/release/bundle/deb/Cinny-Linux-x64.deb
           cp src-tauri/target/release/bundle/rpm/*.rpm src-tauri/target/release/bundle/rpm/Cinny-Linux-x64.rpm
+          # Copy signature file for updater
+          if [ -f src-tauri/target/release/bundle/appimage/*.AppImage.sig ]; then
+            cp src-tauri/target/release/bundle/appimage/*.AppImage.sig src-tauri/target/release/bundle/appimage/Cinny-Linux-x64.AppImage.sig
+          fi
       
       - name: Upload AppImage
         uses: actions/upload-artifact@v3
@@ -99,6 +108,13 @@ jobs:
           name: Cinny-Linux-x64.AppImage
           path: src-tauri/target/release/bundle/appimage/Cinny-Linux-x64.AppImage
       
+      - name: Upload AppImage Signature
+        uses: actions/upload-artifact@v3
+        if: always()
+        with:
+          name: Cinny-Linux-x64.AppImage.sig
+          path: src-tauri/target/release/bundle/appimage/Cinny-Linux-x64.AppImage.sig
+      
       - name: Upload DEB package
         uses: actions/upload-artifact@v3
         with:
@@ -209,3 +225,62 @@ jobs:
         with:
           name: Cinny-Android.apk
           path: src-tauri/gen/android/app/build/outputs/apk/universal/release/Cinny-Android.apk
+
+  create-release:
+    runs-on: ubuntu-latest
+    needs: [build-windows, build-linux, build-android]
+    if: startsWith(github.ref, 'refs/tags/v')
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      
+      - name: Download all artifacts
+        uses: actions/download-artifact@v3
+        with:
+          path: artifacts
+      
+      - name: Get version from tag
+        id: version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+      
+      - name: Create update.json
+        run: |
+          VERSION="${{ steps.version.outputs.VERSION }}"
+          APPIMAGE_SIG=""
+          if [ -f "artifacts/Cinny-Linux-x64.AppImage.sig/Cinny-Linux-x64.AppImage.sig" ]; then
+            APPIMAGE_SIG=$(cat "artifacts/Cinny-Linux-x64.AppImage.sig/Cinny-Linux-x64.AppImage.sig")
+          fi
+          
+          cat > update.json << EOF
+          {
+            "version": "${VERSION}",
+            "notes": "Update to version ${VERSION}",
+            "pub_date": "$(date -u +%Y-%m-%dT%H:%M:%SZ)",
+            "platforms": {
+              "linux-x86_64": {
+                "signature": "${APPIMAGE_SIG}",
+                "url": "http://synbox.ruv.wtf:8418/litruv/cinny-desktop/releases/download/v${VERSION}/Cinny-Linux-x64.AppImage"
+              }
+            }
+          }
+          EOF
+          cat update.json
+      
+      - name: Prepare release files
+        run: |
+          mkdir -p release-files
+          # Move artifacts out of subdirectories
+          find artifacts -type f \( -name "*.msi" -o -name "*.AppImage" -o -name "*.deb" -o -name "*.rpm" -o -name "*.apk" -o -name "*.sig" \) -exec cp {} release-files/ \;
+          cp update.json release-files/
+          ls -la release-files/
+      
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: release-files/*
+          draft: false
+          prerelease: false
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}