- All skill toggles are now per-user (except multi-agent-orchestrator
which remains global). Admin toggle without a target username defaults
to their own per-user state instead of the global file.
- GET /api/skills defaults to the requesting user's own state (previously
returned global state when no ?username= param was given).
- Add SkillsManager.initUserSkillsState(): creates per-user
skills_state.json from global defaults if missing — called on user
creation and on every login as a safety net for existing accounts.
- Create initial per-user skills_state.json for cherry and jasmine.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>