feat: AI chat claim confirmation, CDT alias learning, and eligibility auto-trigger fixes

- Claim flow: show green confirm card (patient, CDT codes, service date) before Selenium starts
- CDT lookup: add DIRECT_CODE_MAP + ALIAS_MAP with 60+ dental abbreviations from office fee schedule
  (2BW→D0272, 4BW→D0274, PA→D0220, FL→D1208, RCT codes, composite tooth#/surface parser, etc.)
- Composite filling parser: auto-map "#29 OB" → D2392 based on tooth# (front/back) and surface count
- Ask-and-learn: unknown CDT terms block claim and ask user; answer saved to DB alias map for future use
- Cancel on confirm card returns to chat (not full reset) so user can correct and retry
- Eligibility auto-trigger fix: reset autoTriggeredRef when autoTrigger resets to false so second
  chatbot eligibility check on same page visit fires correctly (all 5 provider buttons fixed)
- check_eligibility by name now returns eligibility_id_ready with correct siteKey for non-MH patients
- DDMA/CCA/United/Tufts fee schedules updated with office prices (single Price field, no age split)
- getCodeMap case-insensitive matching fix (ddma/cca/etc. now correctly selected)
- Family plan member disambiguation: insuranceId+DOB composite lookup prevents overwriting siblings
- AI chat date fix: send clientDate from browser to avoid UTC midnight rollover (EST→wrong day)
- AI prompt: appointmentDate extracted for claim_only intent when user says "today" or a date

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

apps/Backend/src/queue/processors/_shared.ts

@@ -102,8 +102,28 @@ export async function createOrUpdatePatientByInsuranceId(options: {
 
   console.log(`[createOrUpdatePatient] insuranceId="${normalizedId}" firstName="${incomingFirst}" lastName="${incomingLast}" userId=${userId}`);
 
-  let patient = await storage.getPatientByInsuranceId(normalizedId);
-  console.log(`[createOrUpdatePatient] existing patient lookup: ${patient ? `found id=${patient.id}` : "not found"}`);
+  // Family members often share the same insuranceId (e.g. Delta Dental family plans).
+  // When a DOB is provided, look up by insuranceId+DOB so each family member is a
+  // distinct patient record.  If the combo doesn't exist → new patient; never
+  // overwrite a different family member who happens to share the same insuranceId.
+  let dobDate: Date | null = null;
+  if (dob) {
+    const parsed = new Date(dob);
+    if (!isNaN(parsed.getTime())) dobDate = parsed;
+  }
+
+  let patient = null;
+  if (dobDate) {
+    // Primary lookup: exact insuranceId + DOB match
+    patient = await storage.getPatientByInsuranceIdAndDob(normalizedId, dobDate);
+    console.log(`[createOrUpdatePatient] id+DOB lookup: ${patient ? `found id=${patient.id}` : "not found"}`);
+    // Do NOT fall back to insuranceId-only lookup — another record with that ID
+    // is a different family member and must not be overwritten.
+  } else {
+    // No DOB supplied — fall back to insuranceId-only (legacy / non-family plans)
+    patient = await storage.getPatientByInsuranceId(normalizedId);
+    console.log(`[createOrUpdatePatient] id-only lookup: ${patient ? `found id=${patient.id}` : "not found"}`);
+  }
 
   if (patient && patient.id) {
     const updates: any = {};
@@ -111,14 +131,14 @@ export async function createOrUpdatePatientByInsuranceId(options: {
       updates.firstName = incomingFirst;
     if (incomingLast && String(patient.lastName ?? "").trim() !== incomingLast)
       updates.lastName = incomingLast;
-    if (dob && !patient.dateOfBirth) {
-      const parsed = new Date(dob);
-      if (!isNaN(parsed.getTime())) updates.dateOfBirth = parsed;
-    }
+    // Store DOB if not already set
+    if (dobDate && !patient.dateOfBirth) updates.dateOfBirth = dobDate;
     if (Object.keys(updates).length > 0) {
       console.log(`[createOrUpdatePatient] updating patient id=${patient.id} with`, updates);
       await storage.updatePatient(patient.id, updates);
-      patient = await storage.getPatientByInsuranceId(normalizedId);
+      patient = dobDate
+        ? await storage.getPatientByInsuranceIdAndDob(normalizedId, dobDate)
+        : await storage.getPatientByInsuranceId(normalizedId);
     }
     return patient;
   }
@@ -126,7 +146,7 @@ export async function createOrUpdatePatientByInsuranceId(options: {
   const createPayload: any = {
     firstName: incomingFirst,
     lastName: incomingLast,
-    dateOfBirth: dob,
+    dateOfBirth: dobDate ?? dob,   // use parsed Date; fallback to raw string if dobDate is null
     gender: "",
     phone: "",
     userId,