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/generated/prisma/index-browser.js

@@ -423,6 +423,16 @@ exports.Prisma.OfficeHoursScalarFieldEnum = {
   data: 'data'
 };
 
+exports.Prisma.OfficeContactScalarFieldEnum = {
+  id: 'id',
+  userId: 'userId',
+  receptionistName: 'receptionistName',
+  dentistName: 'dentistName',
+  phoneNumber: 'phoneNumber',
+  email: 'email',
+  fax: 'fax'
+};
+
 exports.Prisma.SortOrder = {
   asc: 'asc',
   desc: 'desc'
@@ -567,7 +577,8 @@ exports.Prisma.ModelName = {
   PatientDocument: 'PatientDocument',
   TwilioSettings: 'TwilioSettings',
   AiSettings: 'AiSettings',
-  OfficeHours: 'OfficeHours'
+  OfficeHours: 'OfficeHours',
+  OfficeContact: 'OfficeContact'
 };
 
 /**