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/results/UserCreateResult.schema.ts

@@ -20,5 +20,6 @@ export const UserCreateResultSchema = z.object({
   communications: z.array(z.unknown()),
   twilioSettings: z.unknown().optional(),
   aiSettings: z.unknown().optional(),
-  officeHours: z.unknown().optional()
+  officeHours: z.unknown().optional(),
+  officeContact: z.unknown().optional()
 });