Implement @mosaic/brain — typed structured data service with MCP + REST API,
JSON file backend, and schema validation via Zod.
Collections: tasks, projects, events, agents, tickets, appreciations,
missions, mission_tasks.
MCP tools: brain_tasks, brain_projects, brain_events, brain_agents,
brain_tickets, brain_today, brain_stale, brain_stats, brain_search,
brain_audit, brain_missions, brain_mission, brain_mission_tasks,
plus mutation tools for all collections.
REST API mirrors MCP 1:1 at /v1/*.
Bearer token auth with timing-safe comparison.
Fastify server with per-request MCP instances (stateless HTTP transport).
JSON file storage with proper-lockfile for concurrent access.
Also adds Brain* types to @mosaic/types.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
