refactor(test): add centralized TypeScript server factory for integration tests (#477)

# refactor(test): add centralized TypeScript server factory for
integration tests

  - Create TypeScriptServer class for managing TypeScript MCP servers
  - Add dedicated typescript/ directory with server infrastructure
  - Refactor TsTestBase to use TypeScriptServer for stdio transport
- Extract TypeScript test tools (greet, multi-greet, prompts, resources)
  - Use npx tsx for direct execution (better performance than npm run)
  - Install TypeScript dependencies automatically in test setup

  The TypeScriptServer factory provides:
  - startSse(port): Start SSE transport server
  - startStdio(): Start STDIO transport server
  - stop(): Graceful server shutdown
  - installDependencies(): npm install automation

<!-- Provide a brief summary of your changes -->

## Motivation and Context
To resurrect typescript tests

## How Has This Been Tested?
Locally, CI

## Breaking Changes
<!-- Will users need to update their code or configurations? -->

## Types of changes
- [x] Bug fix (non-breaking change which fixes an issue)
- [x] Test fix

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

## Additional context
#475

.github/workflows/conformance.yml

@@ -31,19 +31,24 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:
-          node-version: '24.11.1'
+          node-version: 'lts/*'
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
         with:
           add-job-summary: 'always'
-          cache-read-only: true
+          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
+          gradle-home-cache-includes: |
+            caches
+            notifications
+            sdks
+            ../.konan/**
 
       - name: Run Conformance Tests
         run: ./gradlew --no-daemon :conformance-test:test
 
       - name: Upload Conformance Results
-        if: ${{ !cancelled() }}
+        if: always()
         uses: actions/upload-artifact@v6
         with:
           name: conformance-results