ci: add web build and GitHub Pages deployment

.github/workflows/build-artifacts.yml

@@ -8,6 +8,8 @@ on:
 
 permissions:
   contents: write
+  pages: write
+  id-token: write
 
 env:
   FLUTTER_VERSION: "3.35.6"
@@ -256,6 +258,49 @@ jobs:
             ${{ env.IOS_RUNNER_ZIP }}
           if-no-files-found: error
 
+  build-web:
+    name: Build Web App
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+          channel: stable
+          cache: true
+
+      - name: Enable web
+        run: flutter config --enable-web
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      - name: Build web release
+        run: flutter build web --release --base-href /meshcore_sar_app/
+
+      - name: Upload pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: build/web
+
+  deploy-pages:
+    name: Deploy to GitHub Pages
+    runs-on: ubuntu-latest
+    needs: build-web
+    if: github.ref == 'refs/heads/main'
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4
+
   upload-release-assets:
     name: Upload Assets To Release
     if: github.event_name == 'release'