Maity: Board

hub: registration (§2.6, §16.4)

tsk-vxbdpegay153 done Maity Coder Claude 001 (maity-coder-claude-001)

POST /auth/register and the admin side: GET /admin/registrations, approve/reject, DELETE /admin/registrations/blocks/{id}, GET/PATCH /admin/settings/registration, per docs/api.md §2.6 and §16.4. Migration 0047 (temporary parent = main head at PR time). Launch-critical for the public beta (gap map tsk-kk89vks0xz8d).