feat(ci): Add native test result summaries

Enhances CI workflow with automated reporting for better visibility:

**Native Test Result Summaries:**
- Adds GitHub job summary showing test pass/fail status
- Displays formatted table with total/passed/failed test counts
- Uses only native GitHub features ($GITHUB_STEP_SUMMARY)
- No third-party actions required for test reporting

**Benefits:**
- Test results summary on workflow run page
- Maintains existing artifact upload for manual inspection
- All reporting uses native or org-approved tools

Author: hristoterezov

.github/workflows/ci.yml

@@ -38,7 +38,82 @@ jobs:
       run: npm ci
 
     - name: Run tests with coverage
-      run: npm run test:coverage
+      run: |
+        npm run test:coverage 2>&1 | tee test-output.log
+        echo "TEST_EXIT_CODE=${PIPESTATUS[0]}" >> $GITHUB_ENV
+
+    - name: Parse test results
+      if: always()
+      id: test-results
+      run: |
+        # Extract test results from web-test-runner output
+        # Format: "Chrome: |████| 7/7 test files | 182 passed, 0 failed"
+        if grep -q "passed" test-output.log; then
+          PASSED=$(grep -oP '\d+ passed' test-output.log | tail -1 | grep -oP '\d+' || echo "0")
+          FAILED=$(grep -oP '\d+ failed' test-output.log | tail -1 | grep -oP '\d+' || echo "0")
+          TOTAL=$((PASSED + FAILED))
+
+          echo "passed=$PASSED" >> $GITHUB_OUTPUT
+          echo "failed=$FAILED" >> $GITHUB_OUTPUT
+          echo "total=$TOTAL" >> $GITHUB_OUTPUT
+        else
+          echo "passed=0" >> $GITHUB_OUTPUT
+          echo "failed=0" >> $GITHUB_OUTPUT
+          echo "total=0" >> $GITHUB_OUTPUT
+        fi
+
+    - name: Generate test summary
+      if: always()
+      run: |
+        echo "### Test Results 📊" >> $GITHUB_STEP_SUMMARY
+        echo "" >> $GITHUB_STEP_SUMMARY
+
+        PASSED="${{ steps.test-results.outputs.passed }}"
+        FAILED="${{ steps.test-results.outputs.failed }}"
+        TOTAL="${{ steps.test-results.outputs.total }}"
+
+        if [ "$FAILED" = "0" ] && [ "$TOTAL" != "0" ]; then
+          echo "✅ **All tests passed!**" >> $GITHUB_STEP_SUMMARY
+        elif [ "$TOTAL" = "0" ]; then
+          echo "⚠️ **Could not parse test results**" >> $GITHUB_STEP_SUMMARY
+        else
+          echo "❌ **Some tests failed**" >> $GITHUB_STEP_SUMMARY
+        fi
+
+        echo "" >> $GITHUB_STEP_SUMMARY
+        echo "| Metric | Count |" >> $GITHUB_STEP_SUMMARY
+        echo "|--------|-------|" >> $GITHUB_STEP_SUMMARY
+        echo "| Total Tests | $TOTAL |" >> $GITHUB_STEP_SUMMARY
+        echo "| Passed | $PASSED |" >> $GITHUB_STEP_SUMMARY
+        echo "| Failed | $FAILED |" >> $GITHUB_STEP_SUMMARY
+
+        exit $TEST_EXIT_CODE
+
+    - name: Create test results check
+      if: always() && github.event_name == 'pull_request'
+      uses: actions/github-script@v7
+      with:
+        script: |
+          const passed = '${{ steps.test-results.outputs.passed }}';
+          const failed = '${{ steps.test-results.outputs.failed }}';
+          const total = '${{ steps.test-results.outputs.total }}';
+
+          const conclusion = failed === '0' && total !== '0' ? 'success' : (total === '0' ? 'neutral' : 'failure');
+          const summary = `${total} tests run, ${passed} passed, ${failed} failed`;
+
+          await github.rest.checks.create({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            name: 'Test Results',
+            head_sha: context.payload.pull_request.head.sha,
+            status: 'completed',
+            conclusion: conclusion,
+            output: {
+              title: summary,
+              summary: summary,
+              text: `**Test Execution Summary**\n\n- Total: ${total}\n- Passed: ${passed} ✅\n- Failed: ${failed} ${failed === '0' ? '✅' : '❌'}`
+            }
+          });
 
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v4