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>

packages/db/shared/schemas/enums/AiSettingsScalarFieldEnum.schema.ts

@@ -0,0 +1,5 @@
+import * as z from 'zod';
+
+export const AiSettingsScalarFieldEnumSchema = z.enum(['id', 'userId', 'apiKey'])
+
+export type AiSettingsScalarFieldEnum = z.infer<typeof AiSettingsScalarFieldEnumSchema>;