feat(inference): experimental HiSparse on P/D decode - #4023

Bugbot Analysis Progress (4m 30s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (4m 27s)
✅ Posted analysis results (0s)

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

Request ID: 97dac7b1-fc67-4cd9-8724-85841d32f348