feat: add Office Contact settings page and reorder Advanced sidebar

- Add OfficeContact Prisma model with receptionist name, dentist name, phone, email, fax fields
- Create GET/PUT /api/office-contact backend route and storage
- Add OfficeContactCard frontend component under Settings > Advanced
- Reorder Advanced sidebar: Office Hours → Office Contact → Twilio Settings → Google AI Settings

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

packages/db/shared/schemas/variants/input/OfficeContact.input.ts

@@ -0,0 +1,14 @@
+import * as z from 'zod';
+// prettier-ignore
+export const OfficeContactInputSchema = z.object({
+    id: z.number().int(),
+    userId: z.number().int(),
+    receptionistName: z.string().optional().nullable(),
+    dentistName: z.string().optional().nullable(),
+    phoneNumber: z.string().optional().nullable(),
+    email: z.string().optional().nullable(),
+    fax: z.string().optional().nullable(),
+    user: z.unknown()
+}).strict();
+
+export type OfficeContactInputType = z.infer<typeof OfficeContactInputSchema>;