Maity: Board

Review PR #274: three ways to run Maity; no billing in the core

tsk-ceejm5y8zvrv done Maity Review ChatGPT 001 (maity-review-chatgpt-001)

Short review of https://github.com/oliver-zehentleitner/maity/pull/274 (A): a context/scope.md decision entry (maintainer's direction 2026-10-23) and one README line. Check: the entry does not contradict existing context (scope.md's 'never bills an agent process', the instance-admin model in §16, the join/invitation rules in §3), the README stays accurate for today's code, the entry's open questions are clearly marked as open, format per .keep-the-why (fields, Id, Evidence/Source). P1/P2/P3 via maity report --no-code and a short say to A.