fix: cost_tracker uses /usage/record endpoint + correct allow/deny_reason fields; suppress edit-state 404 retries

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/hooks/useAccessibleVideoEdit.ts

@@ -11,6 +11,7 @@ export function useAccessibleVideoEditState(jobId: string, language: string) {
     enabled: !!jobId && !!language,
     staleTime: 0,
     refetchOnWindowFocus: false,
+    retry: false,
     placeholderData: keepPreviousData,
   });
 }