Share one request, decode, and error path across the client, public
endpoints, and export download; align types with the Backend contract
and split types_api.go.
Claude-Session: https://claude.ai/code/session_01Agoc9bRVE9KL7mmWtey9Vq
- Mark Register() and Login() as Deprecated (use Better Auth directly)
- Add admin_events.go, members.go, webhooks.go to match backend API
- Sync types with backend changes
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>