fix(booking): aggregate public booking state across all schedules

The public doctor payload built `active`/`free_turn`/`hours_of_work` from the
personal schedule alone, so a doctor bookable only at a clinic was reported as
"نوبت‌دهی غیرفعال". Aggregate over every schedule instead: any schedule with
online booking on and an active day makes the doctor bookable, and the disabled
label only appears when all of them are off.

Three admin-panel fixes for the same class of bug:

- AppointmentsPage took the selected doctor from `dbUuid`, which is the clinic's
  uuid inside a clinic context — the slots request 404'd. Use `doctorUuid`.
- TurnsTimeline rendered any error or unknown empty_reason as "این روز شیفت کاری
  ندارد". Errors now surface as errors and unknown reasons get a neutral message;
  the day-off wording is reserved for an explicit day_off from the backend.
- Admins have no clinic context, so slots fell back to the personal schedule.
  They now pick a location from `appointment-booking-locations` and that choice
  drives the slot, service and create-appointment requests.

Adds `app:schedule:normalize-format` for legacy rows stored as a bare JSON list
covering only Saturday, which read as day-off for the rest of the week.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/admin/components/appointments/ServiceSlotPicker.tsx

@@ -18,15 +18,18 @@ export interface ServicePick { serviceUuids: string[]; durations: Record<string,
  * با اعمال همان override محاسبه می‌شوند. انتخاب را از طریق onSelect بالا می‌فرستد.
  */
 export default function ServiceSlotPicker({
-  doctorUuid, date, services, onSelect, editableDuration = true,
+  doctorUuid, date, services, onSelect, editableDuration = true, clinicUuidOverride,
 }: {
   doctorUuid: string;
   date: string;
   services: BookingService[];
   onSelect: (v: ServicePick) => void;
   editableDuration?: boolean;
+  /** undefined = context محیط جاری؛ مقدار صریح (شامل null) = محل انتخاب‌شده خارج از context */
+  clinicUuidOverride?: string | null;
 }) {
-  const clinicUuid = useClinicContext();
+  const contextClinicUuid = useClinicContext();
+  const clinicUuid = clinicUuidOverride === undefined ? contextClinicUuid : clinicUuidOverride;
   const [sectionUuid, setSectionUuid] = useState('');
   const [selected, setSelected] = useState<PickedService[]>([]);
   const [pickedSlot, setPickedSlot] = useState<ServiceSlot | null>(null);