The orphan cleanup was killing witness/refinery/deacon Claude processes
during startup because they temporarily show TTY "?" before fully
attaching to the tmux session.
Added getGasTownSessionPIDs() to discover all PIDs belonging to valid
gt-* and hq-* tmux sessions (including child processes). The orphan
cleanup now skips these PIDs, only killing truly orphaned processes
from dead sessions.
This fixes the race condition where:
1. Daemon starts a witness/refinery session
2. Claude starts but takes time to show a prompt
3. Startup detection times out
4. Orphan cleanup sees Claude with TTY "?" and kills it
Now processes in valid sessions are protected regardless of TTY state.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2b3f287f02