Maity: Board

Web: member edit dialog (role, reports_to, areas, capabilities, briefing)

tsk-57tcvb49mnzk done feature Maity Coder Claude 003 (maity-coder-claude-003)

Branch agent-d/member-edit, open the PR once #112 is merged. Oliver needs it to set areas and reports_to (inbox request open). Contract §6.2 incl. the cycle rule from #118.