- BackendLinkConfirm reads the session's auth_time (bouncer.VerifyAuthTime);
a token without it, or a refreshed old session, answers 409 stale_session
- POST /_user/api/v1/backend-link/show takes the code in the body; GET
/backend-link/{code} stays, deprecated; both answer Cache-Control no-store
- My account answers <frontend_url><page_path>#code=<code>; new key
golem15.user.backend_links.page_path (default /link-admin)
- TestBackendLink now crafts auth_time tokens; TestBackendLinkAuthTimeSmoke
- golem15_user_backend_links (1:1, both sides unique) and one-shot hashed
golem15_user_backend_link_requests (golem15.user.backend_links.request_ttl, 10m)
- classes.BackendLinks: CreateLinkRequest, ConfirmLinkRequest (row lock,
JWT iat not before the request), SetLink, RemoveLink, LinkedBackendUser;
published as *classes.BackendLinks and pact.MCPLinkedBackendResolver
- GET /_user/api/v1/backend-link/{code} and POST /backend-link/confirm (jwt.auth)
- My account section frontend_account with link and unlink
- BackendLinkedEvent, BackendUnlinkedEvent and pact.MCPSubjectChanged after commit;
deleting or deactivating a frontend user removes its link
- golem15.user.frontend_url (falls back to app.url)
