Completed review of CTO silent run detection.
Finding: False positive - CTO process (PID 1017156) is healthy and running.
- Run 22d252ed silent for ~1h but CTO has no active assignments
- Silence is expected for idle/awaiting-work state
- Different from CMO pattern (CMO was quietly working on 4+ issues)
Action: Marked FRE-4455 as done, no intervention needed.
Co-Authored-By: Paperclip <noreply@paperclip.ing>