Two fixes for the admin page blank / TypeError: b.filter issue:
1. Appointments.tsx: Add r.ok status checks before calling r.json() on
/api/clients, /api/services, and /api/staff. Previously, 403/404 error
responses would have their JSON bodies (e.g. {error:"Forbidden"}) passed
to state setters, causing Array.prototype.filter to fail on non-array
objects. Now errors are thrown and caught by the existing .catch() handler,
setting the error state instead.
2. DevLoginSelector.tsx: Add userId field to StaffUser and use
s.userId ?? s.id when calling selectUser. If the API returns a non-null
userId (post-migration), that is used as the dev login identifier;
otherwise falls back to staff.id (pre-migration records where userId
is null).
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Barkley Trimsworth