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

app/providers.tsx

@@ -2,6 +2,7 @@
 
 import { SessionProvider } from "next-auth/react";
 import type { ReactNode } from "react";
+import { TRPCProvider } from "@/components/providers/TRPCProvider";
 import { ThemeProvider } from "@/components/theme-provider";
 
 export function Providers({ children }: { children: ReactNode }) {
@@ -18,7 +19,7 @@ export function Providers({ children }: { children: ReactNode }) {
         refetchInterval={30 * 60}
         refetchOnWindowFocus={false}
       >
-        {children}
+        <TRPCProvider>{children}</TRPCProvider>
       </SessionProvider>
     </ThemeProvider>
   );