v0.12.0 — CLI audit refactor

Audit-driven CLI cleanup + auto/ subpackage refactor

Breaking changes

• 14 CLI verbs renamed per audit §1 (verb-noun + leaf-noun rules):
  • status → show-status
  • list → list-agents
  • health → check-health
  • logs → show-logs
  • build → build-image
  • snapshot → take-snapshot
  • cleanup → clean-registry
  • hook-event → ingest-hook-event
  • quota-watch → watch-quota
  • contributor-spec → render-contributor-spec
  • priority-check → check-priority
  • singleton-reconcile → reconcile-singletons
  • install (group) → installation
  • actions run → actions exec
  • actions stats → actions show-stats
• sac start / sac stop now require positional TARGETS; --all flag removed (pass a directory target instead)
• Python: scitex_agent_container.auto_accept[_daemon|_response] → scitex_agent_container.auto.{accept,daemon,response}

New

• sac mcp list-tools command group (audit §1a)
• --json on show-logs, --dry-run / --yes on reconcile-singletons
• All audit warnings cleared across CLI / skills / Python APIs / project structure