fix: minor updates & improvements

Author: chertik77

src/app/routes/auth/google.callback.tsx

@@ -1,10 +1,13 @@
-import { createFileRoute } from '@tanstack/react-router'
+import { createFileRoute, redirect } from '@tanstack/react-router'
 
 import { GoogleAuthLoader } from '@/features/session/google'
 
 import { SessionContracts } from '@/entities/session'
 
 export const Route = createFileRoute('/auth/google/callback')({
   component: GoogleAuthLoader,
-  validateSearch: SessionContracts.GoogleCallbackSearchSchema
+  validateSearch: SessionContracts.GoogleCallbackSearchSchema,
+  beforeLoad({ search: { code, state } }) {
+    if (!code || !state) throw redirect({ to: '/' })
+  }
 })