fix: use correct column names for stops (cutoff_date not cutoff_time) and replace mock Supabase with real pool queries in stops detail/new pages

src/components/admin/stops/types.ts

@@ -13,6 +13,7 @@ export type Stop = {
   address?: string | null;
   zip?: string | null;
   cutoff_time?: string | null;
+  cutoff_date?: string | null;
   brands: { name: string } | { name: string }[];
 };