Keep open threads in progress until human close

[arieldiaz]

Summary

• remove no_action from the active lifecycle enum
• keep every open thread working by default, including after an ordinary agent reply
• return answered human handoffs to working while the agent processes the reply
• reserve closed and ✅ for Ariel-confirmed completion
• keep historical no_action ledger rows inert so they cannot clear current state

Verification

• node --test ops/openclaw/plugins/run-signature/*.test.* — 77 passed
• python3 -m unittest discover -s ops/session-console/tests -p 'test_*.py' — 15 passed
• python3 -m unittest test_thread_status.py in ops/menubar — 3 passed
• bash tests/reply-policy.sh
• git diff --check
• source search confirms no_action remains only in migration documentation and a legacy-inertness test

Deployment follow-through

After merge, rebuild and activate the Ariel OS immutable runtime through the supervised cutover. Verify an ordinary reply keeps 🔄 on the root, a real answer/action/schedule handoff replaces it, and only Ariel-confirmed closure produces ✅. No production deployment is part of this PR.

Worked on by

• Ariel Diaz