[CHIA-4324] NFT media pipeline 5: download timeout recovery, bounded confirmation previews, buffer cleanup - #3033

Bugbot Analysis Progress (6m 22s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (6m 19s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_b28a9ffe-c5ce-4334-a66f-d262aab99ed4