feature: Add test step to CI workflow

- Added npm run test:run to GitHub Actions build workflow
- Updated workflow name to reflect testing is included
- Tests now run between lint and build steps

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: Build and Lint
+name: Build, Test, and Lint
 
 on:
   push:
@@ -8,8 +8,8 @@ on:
   workflow_dispatch:
 
 jobs:
-  build-and-lint:
-    name: Build and Lint
+  build-test-lint:
+    name: Build, Test, and Lint
     runs-on: ubuntu-latest
 
     steps:
@@ -28,5 +28,8 @@ jobs:
       - name: Run linter
         run: npm run lint
 
+      - name: Run tests
+        run: npm run test:run
+
       - name: Build application
         run: npm run build