ci: isolate Windows test failure output

Author: fajarnugraha37

.github/workflows/ci.yml

@@ -1,53 +1,31 @@
-name: CI
+name: Windows diagnostic
 
 on:
-  push:
-    branches: ['main', 'agent/**']
   pull_request:
 
 permissions:
   contents: read
 
 jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: ubuntu-latest
-            node-version: 22
-            upload-source: false
-          - os: ubuntu-latest
-            node-version: 24
-            upload-source: true
-          - os: windows-latest
-            node-version: 24
-            upload-source: false
-    runs-on: ${{ matrix.os }}
+  windows-test:
+    runs-on: windows-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
-          cache: npm
-          cache-dependency-path: global-template/docgen/package.json
+          node-version: 24
       - name: Syntax check
         working-directory: global-template/docgen
         run: npm run check
-      - name: Unit and integration tests
+      - name: Unit and integration tests with concise failure output
         working-directory: global-template/docgen
-        run: npm test
-      - name: Installer dry run
-        run: node install.mjs --dry-run --no-link-cli
-      - name: Upload exact CI source
-        if: always() && matrix.upload-source
-        uses: actions/upload-artifact@v4
-        with:
-          name: docgen-ci-source
-          if-no-files-found: error
-          retention-days: 3
-          path: |
-            global-template/docgen
-            global-template/docgen/project-template
-            install.mjs
-            VERSION
+        shell: pwsh
+        run: |
+          npm test *> test-output.log
+          $exitCode = $LASTEXITCODE
+          if ($exitCode -ne 0) {
+            Write-Host '=== FAILURE CONTEXT ==='
+            Select-String -Path test-output.log -Pattern 'not ok|AssertionError|ERR_ASSERTION|error:|failureType|expected:|actual:' -Context 4,12
+            exit $exitCode
+          }
+          Get-Content test-output.log -Tail 30