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/routes/index.ts

@@ -26,6 +26,7 @@ import exportPaymentsReportsRoutes from "./export-payments-reports";
 import jobMonitorRoutes from "./job-monitor";
 import twilioRoutes from "./twilio";
 import aiSettingsRoutes from "./ai-settings";
+import officeHoursRoutes from "./office-hours";
 
 const router = Router();
 
@@ -56,5 +57,6 @@ router.use("/export-payments-reports", exportPaymentsReportsRoutes);
 router.use("/job-monitor", jobMonitorRoutes);
 router.use("/twilio", twilioRoutes);
 router.use("/ai", aiSettingsRoutes);
+router.use("/office-hours", officeHoursRoutes);
 
 export default router;