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/mocks/n8n-api/index.ts

@@ -11,7 +11,7 @@ export * from './data/credentials';
 export { http, HttpResponse } from 'msw';
 
 // Export factory utilities
-export { n8nHandlerFactory } from '../setup/msw-setup';
+export { n8nHandlerFactory } from '../../setup/msw-setup';
 export { 
   n8nApiMock, 
   testDataBuilders,