fix: resolve all TypeScript and lint errors in integration tests

- Fixed InMemoryTransport destructuring (object → array)
- Updated all callTool calls to new object syntax
- Changed getServerInfo() to getServerVersion()
- Added type assertions for response objects
- Fixed import paths and missing imports
- Corrected template and performance test type issues
- All 56 TypeScript errors resolved

Both 'npm run lint' and 'npm run typecheck' now pass successfully

tests/integration/setup/msw-test-server.ts

@@ -165,7 +165,7 @@ export const n8nApiMock = {
    */
   mockWorkflowCreate: (response?: any) => {
     return http.post('*/api/v1/workflows', async ({ request }) => {
-      const body = await request.json();
+      const body = await request.json() as Record<string, any>;
       return HttpResponse.json({
         data: {
           id: 'test-workflow-id',