- BrainModule provides Brain instance to all gateway controllers - ConversationsController: CRUD + message listing/creation - ProjectsController: CRUD with owner assignment - MissionsController: CRUD with project association - TasksController: CRUD with project/mission/status filtering - All routes guarded by AuthGuard (BetterAuth session validation) - DTOs at module boundaries per project convention Closes #14, Closes #15 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>