feat: batch eligibility, batch claim, and batch check+claim from AI chat

- Add batch_eligibility, batch_claim, and batch_check_and_claim intents
  to AI classifier so multiple patients can be processed one by one
- Add queue processing on insurance-status and claims pages to auto-start
  the next patient after each check/claim completes
- Make patient schema firstName, lastName, phone optional so patients can
  be created with just member ID + DOB from eligibility checks
- Cancel buttons now preserve chat history instead of clearing it
- Patient-found card shows Check Eligibility, Eligibility & Appointment
  Today, and Cancel buttons
- Claim service date asks user to pick between latest appointment and
  today when they differ
- Login page subtitle styled with animated gradient

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

apps/Backend/src/ai/internal-chat-graph.ts

@@ -5,6 +5,9 @@ import { getLlm, type AiProvider } from "./llm-factory";
 export type InternalChatIntent =
   | "check_eligibility"     // by patient name → look up in DB
   | "eligibility_by_id"     // by explicit memberId + dob (no name)
+  | "batch_eligibility"     // multiple patients by memberId + dob
+  | "batch_claim"           // claim same procedures for multiple patients by name
+  | "batch_check_and_claim" // eligibility + claim for multiple patients by memberId+dob
   | "check_and_claim"       // eligibility + claim procedures
   | "find_patient"          // look up patient record only
   | "schedule_appointment"  // add patient to today's (or specified) schedule
@@ -21,6 +24,10 @@ export interface ChatClassification {
   patientName?: string;       // for check_eligibility / find_patient / schedule_appointment
   memberId?: string;          // for eligibility_by_id / check_and_claim
   dob?: string;               // for eligibility_by_id / check_and_claim (MM/DD/YYYY)
+  // --- batch eligibility (multiple patients) ---
+  patients?: { memberId: string; dob: string }[];  // for batch_eligibility
+  // --- batch claim (same procedures for multiple patients by name) ---
+  patientNames?: string[];  // for batch_claim
   // --- insurance hint (only if explicitly stated in the message) ---
   insuranceHint?: string;     // raw text, e.g. "masshealth", "BCBS", "CCA"
   // --- rendering/treating provider (only if explicitly stated, e.g. "with provider Kai Gao") ---
@@ -48,6 +55,8 @@ Respond ONLY with valid JSON (no markdown fences):
   "patientName": "<full name if mentioned by name>",
   "memberId": "<member/insurance ID if given explicitly or found in history>",
   "dob": "<date of birth in MM/DD/YYYY if given explicitly or found in history>",
+  "patients": [{"memberId": "<id>", "dob": "<MM/DD/YYYY>"}, ...],
+  "patientNames": ["<name1>", "<name2>", ...],
   "insuranceHint": "<insurance name only if explicitly stated in the message, e.g. 'masshealth', 'BCBS MA', 'CCA'>",
   "renderingProvider": "<provider/doctor name only if explicitly stated, e.g. 'Kai Gao', 'Dr. Smith' — omit if not mentioned>",
   "procedureNames": ["<raw procedure name>", ...],
@@ -61,12 +70,27 @@ Omit any field that is not present in the message or history.
 Intents:
 - check_eligibility     : user wants to check insurance for a patient identified by NAME only
                           e.g. "check Maria Jesus", "verify insurance for John Smith"
-- eligibility_by_id     : user provides a member ID and date of birth (no patient name)
+- eligibility_by_id     : user provides a SINGLE member ID and date of birth (no patient name)
                           e.g. "check masshealth for 100xxxx, 10/10/1988"
                           ALSO use this when user wants to check eligibility AND schedule/add an appointment on a date
                           e.g. "check mh for 100xxxx, 10/10/1988 and schedule on 4/10/2026"
                           e.g. "check mh for 100xxxx, 10/10/1988 and make appointment on 5/1/2026"
                           In these cases set appointmentDate to the mentioned date (YYYY-MM-DD)
+- batch_eligibility     : user provides MULTIPLE member IDs with dates of birth in one message
+                          e.g. "check mh for 100xxxx 10/10/1988 and 200xxxx 5/5/2000"
+                          e.g. "check 100xxxx, 10/10/1988 and 200xxxx, 5/5/2000"
+                          Use this ONLY when TWO OR MORE distinct memberId+dob pairs are given.
+                          Put each pair into the "patients" array. Also set insuranceHint if stated.
+- batch_claim           : user wants to claim the SAME procedures for MULTIPLE patients identified by NAME
+                          e.g. "claim perio exam and adult prophy for Jackaline and Keioson"
+                          e.g. "perio exam, adult cleaning for Maria and John"
+                          Use this ONLY when procedures AND two or more patient names are given.
+                          Put each patient name into the "patientNames" array. Put procedure names in "procedureNames".
+- batch_check_and_claim : user provides MULTIPLE member IDs with DOBs AND wants to claim PROCEDURES for all of them
+                          e.g. "check mh for 100xxxx 10/10/1988 and 200xxxx 5/5/2000, and claim perio exam and adult prophy"
+                          e.g. "check 100xxxx, 10/10/1988 and 200xxxx, 5/5/2000 and claim D0120 D1110 for them"
+                          Use this when TWO OR MORE memberId+dob pairs are given WITH procedures.
+                          Put each pair into "patients" array. Put procedure names in "procedureNames".
 - check_and_claim       : user wants to check eligibility AND submit PROCEDURES/BILLING as claims
                           e.g. "check masshealth for 100xxxx, 10/10/1988 and claim perio exam and adult cleaning"
                           e.g. "check Maria Jesus and claim D0120 D1110"