feat: Show initialize request/response in History panel (#269)

- Add logging for initialize request and response in useConnection.connect
- Include server capabilities, version, and instructions in history

client/src/lib/hooks/__tests__/useConnection.test.tsx

@@ -17,6 +17,8 @@ const mockClient = {
   connect: jest.fn().mockResolvedValue(undefined),
   close: jest.fn(),
   getServerCapabilities: jest.fn(),
+  getServerVersion: jest.fn(),
+  getInstructions: jest.fn(),
   setNotificationHandler: jest.fn(),
   setRequestHandler: jest.fn(),
 };