Ambiguous idempotency-store failures can occur after the account transaction commits. Scope durable recovery markers to the authenticated admin, retain the operation key across reloads, and recover only an already committed copy without rerunning active work.
Constraint: Generic idempotent handlers may legitimately remain active while a recovery lookup is attempted
Rejected: Reclaim or rerun an in-progress duplicate request | can execute account creation concurrently
Rejected: Recover by source account and key alone | allows another admin to observe the committed copy
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep ambiguous-response recovery read-only and bind durable operation markers to the authenticated actor
Tested: Full Go unit suite, go vet, server build, integration-test compilation; frontend lint, typecheck, 1,030 Vitest tests, and production build
Not-tested: Docker-backed PostgreSQL integration runtime because Docker is unavailable
Related: Wei-Shaw/sub2api#1379
Related: Wei-Shaw/sub2api#2928
Admins often need another account with the same provider and routing configuration. Duplicate on the server so credentials never return to the browser, preserve exact group priorities atomically, start the copy paused, and recover the same copy after ambiguous idempotency-store failures.
Constraint: Admin account responses redact credentials, so duplication must remain server-side
Constraint: OAuth and setup-token credentials rotate and must not be shared across account rows
Rejected: Copy raw account JSON to the clipboard | exposes credentials outside the server
Rejected: Duplicate rotating credentials | account-scoped refresh locks can race token rotation
Confidence: high
Scope-risk: moderate
Reversibility: clean
Directive: Keep copies paused, avoid automatic upstream probes, and exclude rotating credential types unless token ownership is redesigned
Tested: Targeted Go tests, Go vet, server build; frontend lint, typecheck, Vitest suite, production build; integration test compiled
Not-tested: Docker-backed PostgreSQL execution because Docker is unavailable
Related: Wei-Shaw/sub2api#1379
Related: Wei-Shaw/sub2api#2928
Mirror the Admin UI Server-Timing opt-in for user-facing pages so
authenticated callers can inspect total/app/db/redis/deps metrics on
session, profile, keys, usage, payment, and related user APIs.
- Collect when X-User-UI-Request=1 or path is on the user allowlist
- Emit for non-admin only on allowlisted paths (header is not auth)
- Exclude payment public/webhook surfaces
- Mark matching SPA requests and allow the new CORS request header
Tian Lee