* feat(slack): structured questions with clickable options on human decisions (#193)
- `rig queue create --human-questions-file`: 1-4 questions, 2-4 options each
(one may be recommended), validated at create; stored by migration 091.
- Slack renders each question as a button row with a complete text fallback;
a typed thread reply still answers ("Other").
- A block_actions click records that answer on the item; once every question
is answered the answers are final, one reply row lands on the seat and the
decision resolves like a typed reply. Failed hand-backs are dead-lettered
and retried; each click is confirmed in the thread.
- App manifest turns on interactivity (Socket Mode, no request URL); setup
doc and messaging-the-human skill updated.
* fix(slack): own-key answer lookup; require a human destination for questions(#193)
* fix(slack): redact secrets in answer acknowledgements (#193)
Sahil