add dev workflow for building and deploying backend and frontend

.gitea/workflows/dev.yml

@@ -0,0 +1,50 @@
+name: Dev Build
+
+on:
+  pull_request:
+    branches: [dev]
+  push:
+    branches: [dev]
+
+jobs:
+  build-test:
+    runs-on: ubuntu-dotnet
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Restore backend
+        run: dotnet restore
+
+      - name: Build backend
+        run: dotnet build --no-restore --configuration Release
+
+      - name: Test backend
+        run: dotnet test --no-build --configuration Release
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+
+      - name: Install frontend deps
+        run: npm ci
+        working-directory: ./frontend
+
+      - name: Build frontend
+        run: npm run build
+        working-directory: ./frontend
+
+  deploy-dev:
+    needs: build-test
+    if: gitea.event_name == 'push'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Deploy dev
+        run: |
+          echo "${{ secrets.DEV_DEPLOY_SSH_KEY }}" > /tmp/dev_key
+          chmod 600 /tmp/dev_key
+          ssh -i /tmp/dev_key -o StrictHostKeyChecking=no \
+            ${{ secrets.DEV_DEPLOY_USER }}@${{ secrets.DEV_DEPLOY_HOST }} \
+            "${{ secrets.DEV_DEPLOY_PATH }}/deploy.sh"