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/pure/index.ts

@@ -30,3 +30,4 @@ export { PatientDocumentModelSchema } from './PatientDocument.pure';
 export { TwilioSettingsModelSchema } from './TwilioSettings.pure';
 export { AiSettingsModelSchema } from './AiSettings.pure';
 export { OfficeHoursModelSchema } from './OfficeHours.pure';
+export { OfficeContactModelSchema } from './OfficeContact.pure';