feat: label sampled tokens with the policy step and log per-token policy age (vLLM 0.32 weight_versions) - #4141

Bugbot Analysis Progress (4m 34s elapsed)

✅ Gathered PR context (2s)
✅ Completed bug detection (4m 32s)
✅ Posted analysis results (0s)

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

Request ID: 164a4adc-0329-4c1a-b4bf-f6979934b847