Why: The login recovery contract requires a real-browser acceptance
spec covering admin issue -> key-only redeem -> forced set-password ->
relogin, and the changepw spec needed the same deterministic gate
synchronization.
Evidence: Both specs pass against an isolated auth-on instance
(serve --auth on, binary backend=467718a+frontend=9fc7da2); receipts
be7ae9a2/b3a9e691 bound to Dev HEAD 268ef29 (SELF). changepw-form also
passes (5.9s) alongside login-key (12.2s) on a reused instance,
proving idempotency.
Impact: New e2e/login-key.playwright.ts (skip-guarded like existing
suites); changepw login() waits for the gate heading and success page
before returning to login, fixing a stale-fill race that submitted
empty gate fields.
Refs: Dev docs/svc-deploy/2026-10-13-login-recovery-contract.md; Dev PR #504.
weichen