- Add GET /api/admin/verify — side-effect-free code check used by the
admin unlock flow; registered before reset-auth-code in the router
- Remove "Reset auth code" section from admin panel (UI + dead API code);
rotation is now CLI-only via `wrangler secret put ADMIN_AUTH_CODE`
- Add rotate-admin-code justfile recipe using pwgen for local key rotation
- Add pwgen to Nix dev shell
- Update OpenAPI spec with /api/admin/verify definition
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Elijah Voigt