Staff were stuck pasting a raw bearer token with no reset. Now: a proper /login page (email+password)
that exchanges to the staff member's existing token (SPA unchanged downstream). PBKDF2 hashing (stdlib,
no bcrypt dep). New: POST /auth/login, POST /auth/change-password (self), POST /admin/staff/{id}/password
(admin reset). staff gains email(unique)/phone/pay_rate/password_hash. Staff admin UI: add/edit details,
set-password, and timecards now show pay (hours × rate). admin.html redirects to /login when unauthed +
bounces expired tokens; nav gets Change-password + Sign-out. Owner master token still works (break-glass on
the login page). Verified e2e: login, wrong-pw 401, token auth, admin reset invalidates old pw.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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