feat: add schedule column labels, office hours enforcement, and appointment move fix

- Schedule columns default to labels A–F (localStorage, per-browser, click to rename)
- Settings → Advanced → Office Hours: configure Doctors (A-C) and Hygienists (D-F) AM/PM hours per weekday
- Gray out schedule slots outside office hours; override dialog for manual exceptions
- Override Office Hours toggle: select specific dates where all slots are open
- Fix appointment move: send only real DB fields to avoid Zod strict-mode rejection of computed fields (hasProcedures, hasClaimWithNumber)
- Fix backend PUT /appointments: safe error logging to prevent Prisma error crashing Node inspect
- Add OfficeHours Prisma model and GET/PUT /api/office-hours route

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Backend/src/storage/appointments-storage.ts

@@ -114,14 +114,10 @@ export const appointmentsStorage: IStorage = {
     id: number,
     updateData: UpdateAppointment
   ): Promise<Appointment> {
-    try {
-      return await db.appointment.update({
-        where: { id },
-        data: updateData,
-      });
-    } catch (err) {
-      throw new Error(`Appointment with ID ${id} not found`);
-    }
+    return db.appointment.update({
+      where: { id },
+      data: updateData,
+    });
   },
 
   async deleteAppointment(id: number): Promise<void> {