feat: AI chat scheduling, claim automation, and session improvements

- Internal AI chat: schedule_appointment intent books earliest available
  slot in Column A using office hours; claim_only intent looks up latest
  past appointment for service date, asks user when two appointments are
  within 7 days, auto-triggers correct Selenium worker with mapped prices
- Gemini model updated to gemini-flash-latest; conversation history (15
  messages) passed for pronoun/reference resolution; history trimmed to
  start with user turn so Gemini doesn't reject the context
- Insurance alias file (insuranceAliases.json) replaces hardcoded siteKey
  matching; "tufs" now resolves to TUFTS_SCO
- DOB format normalized (MM/DD/YYYY → YYYY-MM-DD) before parseLocalDate;
  autoCheck now fires for all insurance types, not just MH/CMSP
- Claim form auto-submit: all handlers (MH, CCA, DDMA, UnitedDH, Tufts)
  accept formToUse and receive fee-schedule-priced form; prefillDone set
  after chatbot code prefill so autoSubmit gate opens correctly
- Chatbot: chat history persisted in sessionStorage, cleared on logout
  and auto-logout; Clear button writes fresh state synchronously; message
  history window increased to 15
- DentaQuest/TuftsSCO Selenium: "Remember me" checkbox clicked before
  sign-in to persist OTP trust cookie across sessions

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

apps/Frontend/src/pages/insurance-status-page.tsx

@@ -179,8 +179,14 @@ export default function InsuranceStatusPage() {
       try {
         const { memberId: id, dob, autoCheck: ac } = JSON.parse(raw);
         if (id) setMemberId(id);
-        if (dob) setDateOfBirth(parseLocalDate(dob));
-        if (ac === "mh" || ac === "cmsp") pendingAutoCheck.current = ac;
+        if (dob) {
+          // dob may arrive as MM/DD/YYYY or YYYY-MM-DD — normalize to YYYY-MM-DD
+          const normalized = /^\d{1,2}\/\d{1,2}\/\d{4}$/.test(dob)
+            ? (() => { const [m, d, y] = dob.split("/"); return `${y}-${m!.padStart(2,"0")}-${d!.padStart(2,"0")}`; })()
+            : dob;
+          setDateOfBirth(parseLocalDate(normalized));
+        }
+        if (ac) pendingAutoCheck.current = ac;
         sessionStorage.removeItem("chatbot_eligibility");
       } catch {}
     };