fix: CI/CD test failures and invalid Go version

- Fix go.mod Go version from invalid 1.25.7 to 1.23
- Fix Dockerfile golang image from 1.25 to 1.23
- Add window.matchMedia mock for jsdom themeStore tests
- Exclude e2e/ from Vitest to prevent Playwright test conflicts
- Add frontend test step to both CI workflows

.github/workflows/docker-build.yml

@@ -1,4 +1,4 @@
-name: Build and Push Docker Image
+name: Build, Test and Push Docker Image
 
 on:
   push:
@@ -13,7 +13,43 @@ env:
   OWNER: betterandbetterii
 
 jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.23'
+
+      - name: Run Go tests
+        run: go test ./... -v -count=1
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install frontend deps
+        run: cd frontend && npm ci --legacy-peer-deps
+
+      - name: Build frontend
+        run: cd frontend && npm run build
+
+      - name: Lint frontend
+        run: cd frontend && npm run typecheck
+
+      - name: Run frontend tests
+        run: cd frontend && npm test -- --run
+
   build-and-push:
+    needs: test
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -51,11 +87,11 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
-          file: ./excalidraw-complete.Dockerfile
-          push: true
+          file: ./excalidraw-full.Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.IMAGE_NAME }}:buildcache