feat: complete tRPC integration and fix platform UI issues

- Implement comprehensive tRPC setup with type-safe API
- Create tRPC routers for dashboard, admin, and auth endpoints
- Migrate frontend components to use tRPC client
- Fix platform dashboard Settings button functionality
- Add platform settings page with profile and security management
- Create OpenAI API mocking infrastructure for cost-safe testing
- Update tests to work with new tRPC architecture
- Sync database schema to fix AIBatchRequest table errors

tests/api/auth-routes.test.ts

@@ -262,11 +262,14 @@ describe("Authentication API Routes", () => {
         resetTime: Date.now() + 60000,
       });
 
-      vi.mocked(InMemoryRateLimiter).mockImplementation(() => ({
-        checkRateLimit: mockCheckRateLimit,
-        cleanup: vi.fn(),
-        destroy: vi.fn(),
-      } as any));
+      vi.mocked(InMemoryRateLimiter).mockImplementation(
+        () =>
+          ({
+            checkRateLimit: mockCheckRateLimit,
+            cleanup: vi.fn(),
+            destroy: vi.fn(),
+          }) as any
+      );
 
       const request = new NextRequest("http://localhost:3000/api/register", {
         method: "POST",