v2.105.3

Fixes

• fix(supervisor): Prevent worker death on cron exit — workers now use nohup + disown to survive parent process termination (#431)
• fix(supervisor): Fix dispatch deadlock — SC2319 bug caused $? to capture wrong exit code, silently blocking all dispatch
• fix(supervisor): Add pulse-level health check caching — health probe runs once per pulse instead of once per task (saves ~8s per task)
• fix(supervisor): Log dispatch failures instead of swallowing with 2>/dev/null
• fix(setup): Add pipx and venv fallbacks for Cisco Skill Scanner on PEP 668 systems (#430)