fix(clinic-invitation): provision doctor accounts and repair panel actions

The invitation flow never created an account for the invitee. accept() only
looked up an existing doctor by mobile, so for a brand-new invitee it marked
the invitation accepted and burned the token while leaving doctor_id NULL —
no login, no clinic link, and every doctor-facing endpoint 404ing afterwards.

- invite/accept now provision the users + doctors pair, claim the profile on
  accept, link it to the clinic, and SMS generated credentials when the user
  has no password. Existing passwords are never overwritten.
- accept runs in one transaction so an invitation can no longer be marked
  accepted without its doctor profile and clinic link.
- changeStatus accepts `pending`, refreshing the token and re-sending the SMS
  so reactivating a suspended invitation yields a link that actually works.
  Answered invitations are rejected with 409.
- DELETE returns 200 with the standard envelope instead of a bodyless 204,
  which made the admin panel show a false error toast; api.ts also stops
  calling res.json() on empty responses.
- The clinic-doctors settings page sent the active context uuid as the clinic
  uuid, so users holding both a doctor and a clinic context got 404 on every
  invitation action. It now always resolves the clinic context.
- Adds app:invitations:repair to fix invitations already left orphaned.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

assets/admin/components/ClinicDoctorsManager.tsx

@@ -87,7 +87,10 @@ export default function ClinicDoctorsManager({ clinicUuid, readOnly = false }: {
   const changeInvStatusMut = useMutation({
     mutationFn: ({ invUuid, status }: { invUuid: string; status: string }) =>
       api.patch<ApiResponse<any>>(`/api/v1/admin/clinic/invitation/${invUuid}/status`, { status }),
-    onSuccess: () => { toast.success('وضعیت دعوتنامه تغییر کرد'); qc.invalidateQueries({ queryKey: ['clinic-invitations', clinicUuid] }); },
+    onSuccess: (_d, v) => {
+      toast.success(v.status === 'pending' ? 'دعوتنامه فعال و پیامک مجدداً ارسال شد' : 'دعوتنامه تعلیق شد');
+      qc.invalidateQueries({ queryKey: ['clinic-invitations', clinicUuid] });
+    },
     onError:   (e: Error) => toast.error(e.message),
   });
 
@@ -230,7 +233,7 @@ export default function ClinicDoctorsManager({ clinicUuid, readOnly = false }: {
                           {inv.status !== 'removed' && inv.status !== 'accepted' && (
                             <button
                               className="mini-btn"
-                              title="تعلیق"
+                              title={inv.status === 'suspended' ? 'فعال‌سازی و ارسال مجدد پیامک' : 'تعلیق'}
                               disabled={changeInvStatusMut.isPending}
                               onClick={() => changeInvStatusMut.mutate({ invUuid: inv.uuid, status: inv.status === 'suspended' ? 'pending' : 'suspended' })}
                             >