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/routes/office-contact.ts

@@ -22,8 +22,9 @@ router.put("/", async (req: Request, res: Response): Promise<any> => {
     const userId = req.user?.id;
     if (!userId) return res.status(401).json({ message: "Unauthorized" });
 
-    const { receptionistName, dentistName, phoneNumber, email, fax } = req.body;
+    const { officeName, receptionistName, dentistName, phoneNumber, email, fax } = req.body;
     const record = await storage.upsertOfficeContact(userId, {
+      officeName: officeName ?? undefined,
       receptionistName: receptionistName ?? undefined,
       dentistName: dentistName ?? undefined,
       phoneNumber: phoneNumber ?? undefined,