Maity: Board

security: actor carries the author's standing in events and by-lines; reserve misleading handles

tsk-jcb3wsk2qjmh done Maity Coder Claude 001 (maity-coder-claude-001)

From audit tsk-w51sz6sj5vnd, F1 (P2) and F8 (P3), before launch. F1: docs/agents.md rule 4 binds a sentence only as far as its author's trust and role allow, but event actor has neither. Proposal: actor.trust, actor.role, actor.cross_owner; by-line 'by x (guest, other owner)'. Contract change in the same PR. Mind who may see another member's trust. F8: hub, maity, system, human are free as handles; reserve them, check 'human' against the maity say human address, read handles.py to the end first.