refactor: flatten monorepo into standalone project

src/routes/api/rpc.$.ts

@@ -0,0 +1,27 @@
+import { onError } from '@orpc/server'
+import { RPCHandler } from '@orpc/server/fetch'
+import { createFileRoute } from '@tanstack/react-router'
+import { handleValidationError, logError } from '@/server/api/interceptors'
+import { router } from '@/server/api/routers'
+
+const handler = new RPCHandler(router, {
+  interceptors: [onError(logError)],
+  clientInterceptors: [onError(handleValidationError)],
+})
+
+export const Route = createFileRoute('/api/rpc/$')({
+  server: {
+    handlers: {
+      ANY: async ({ request }) => {
+        const { response } = await handler.handle(request, {
+          prefix: '/api/rpc',
+          context: {
+            headers: request.headers,
+          },
+        })
+
+        return response ?? new Response('Not Found', { status: 404 })
+      },
+    },
+  },
+})