feat(staff): Restrict staff permissions and add schedule view

- Backend: Restrict staff from accessing resources, customers, services, and tasks APIs
- Frontend: Hide management sidebar links from staff members
- Add StaffSchedule page with vertical timeline view of appointments
- Add StaffHelp page with staff-specific documentation
- Return linked_resource_id and can_edit_schedule in user profile for staff

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mobile/field-app/src/api/jobs.ts

@@ -185,3 +185,44 @@ export async function rescheduleJob(
   );
   return response.data;
 }
+
+/**
+ * Update an appointment's time via PATCH to /appointments/{id}/
+ * Used for drag-and-drop rescheduling on the mobile timeline
+ */
+export async function updateAppointmentTime(
+  appointmentId: number,
+  data: { start_time: string; end_time: string }
+): Promise<JobListItem> {
+  const token = await getAuthToken();
+  const userData = await getUserData();
+  const subdomain = userData?.business_subdomain;
+  const apiUrl = getAppointmentsApiUrl();
+
+  const response = await axios.patch<any>(`${apiUrl}/appointments/${appointmentId}/`, data, {
+    headers: {
+      'Content-Type': 'application/json',
+      ...(token && { Authorization: `Token ${token}` }),
+      ...(subdomain && { 'X-Business-Subdomain': subdomain }),
+    },
+  });
+
+  // Transform response to match JobListItem format
+  const apt = response.data;
+  const start = new Date(apt.start_time);
+  const end = new Date(apt.end_time);
+  const durationMinutes = Math.round((end.getTime() - start.getTime()) / 60000);
+
+  return {
+    id: apt.id,
+    title: apt.title || apt.service_name || 'Appointment',
+    start_time: apt.start_time,
+    end_time: apt.end_time,
+    status: apt.status as JobStatus,
+    status_display: jobStatusLabels[apt.status as JobStatus] || apt.status,
+    customer_name: apt.customer_name || null,
+    address: apt.address || apt.location || null,
+    service_name: apt.service_name || null,
+    duration_minutes: durationMinutes,
+  };
+}