feat: appointment type inference, procedure codes on cards, claim attachment fixes

- Add appointment type categories matching insurance claim form (recall, filling, pedo, dentures, implant, endo, crown, perio, extraction, ortho, consultation, emergency, other)
- Auto-infer appointment type from CDT codes with priority rules (endo > implant > crown > ...)
- typeLocked flag prevents auto-overwrite when user manually sets type
- Show appointment type label and procedure codes on schedule cards
- Background sync on /day route retroactively fixes stale appointment types
- Fix PUT /api/claims/:id to save claimFiles (previously silently dropped)
- Auto-link AppointmentFile records to ClaimFile when claim is created or updated
- Fix D5750 (denture reline) CDT range to map correctly to dentures category
- Fix typeLocked Zod rejection in appointment update route

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

apps/Frontend/src/utils/procedureCombosMapping.ts

@@ -93,7 +93,7 @@ const TUFTSSCO_CODE_MAP: Map<string, CodeRow> = (() => {
 function getCodeMap(insuranceSiteKey?: string): Map<string, CodeRow> {
   if (insuranceSiteKey === "CCA") return CCA_CODE_MAP;
   if (insuranceSiteKey === "DDMA") return DDMA_CODE_MAP;
-  if (insuranceSiteKey === "UNITED_SCO") return UNITEDDH_CODE_MAP;
+  if (insuranceSiteKey === "UNITED_SCO" || insuranceSiteKey === "UnitedSCO" || insuranceSiteKey === "UNITEDDH") return UNITEDDH_CODE_MAP;
   if (insuranceSiteKey === "TuftsSCO") return TUFTSSCO_CODE_MAP;
   return CODE_MAP; // default: MassHealth
 }
@@ -386,7 +386,7 @@ export function findPriceMismatches(
   patientDOB: string,
   serviceDate: string,
 ): PriceMismatch[] {
-  const supported = ["MH", "MASSHEALTH", "CCA", "DDMA", "UNITEDDH", "TUFTSSCO"];
+  const supported = ["MH", "MASSHEALTH", "CCA", "DDMA", "UNITEDDH", "UNITEDSCO", "TUFTSSCO"];
   if (!insuranceSiteKey || !supported.includes(insuranceSiteKey.toUpperCase())) return [];
 
   const map = getCodeMap(insuranceSiteKey);