feat: chat window, preferred language, insurance contact, and AI call eligibility

- Schedule: right-click Chat option opens floating SMS chat window
- Chat window: SMS template selector with appointment date/time pre-filled
- Chat window: office name and phone pulled from Settings > Office Contact
- Chat window: Preferred Language selector (English, Spanish, Portuguese,
  Mandarin, Cantonese, Arabic, Haitian Creole) with fully translated templates
  and locale-aware date/time formatting
- Patient form: Preferred Language field (add/edit), default English
- Settings > Office Contact: added Dental Office Name field
- Settings > Advanced: Insurance Contact page (CRUD — company name + phone)
- Prisma schema: preferredLanguage on Patient, officeName on OfficeContact,
  new InsuranceContact model
- Patient management: Upload Patient Document moved below Patient Records
- Insurance Eligibility: AI Call Insurance collapsible section; insurance
  company and phone auto-populated from saved Insurance Contacts

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

apps/Backend/src/storage/index.ts

@@ -22,6 +22,7 @@ import { aiSettingsStorage } from "./ai-settings-storage";
 import { officeHoursStorage } from "./office-hours-storage";
 import { officeContactStorage } from "./office-contact-storage";
 import { procedureTimeslotStorage } from "./procedure-timeslot-storage";
+import { insuranceContactStorage } from "./insurance-contact-storage";
 
 
 export const storage = {
@@ -47,6 +48,7 @@ export const storage = {
   ...officeHoursStorage,
   ...officeContactStorage,
   ...procedureTimeslotStorage,
+  ...insuranceContactStorage,
 
 };