feat: chatbot CDT lookup — SRP quad, 4-digit auto-prefix, quad field to Selenium

- parseSrpCode: recognize "D4341 UL" / "4341 LR" etc., store quadrant in quad field
- matchOne: auto-prefix D for 4-digit inputs like "0120" → D0120
- LLM prompt: keep SRP code and quadrant together as one procedureName entry
- CdtMatch / CdtResult: add quad field, thread through matchedCodes action data
- claim-form.tsx: include quad in chatbot_claim_prefill type and spread to service line
- selenium_claimSubmitWorker.py: pass quad to fill_service_line, select quadrant
  dropdown by index (UR=1, UL=2, LL=3, LR=4) matching MassHealth form structure

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

apps/Frontend/src/components/layout/chatbot.tsx

@@ -62,6 +62,7 @@ interface CheckAndClaimData {
   autoCheck: string;
   matchedCodes: { code: string; description: string }[];
   serviceDate?: string | null;
+  renderingProvider?: string | null;
 }
 
 let msgCounter = 0;
@@ -346,6 +347,7 @@ export function ChatbotButton() {
         memberId: checkAndClaimData.memberId,
         dob: checkAndClaimData.dob,
         serviceDate: checkAndClaimData.serviceDate ?? null,
+        renderingProvider: checkAndClaimData.renderingProvider ?? null,
       })
     );
     prefillAndNavigate(checkAndClaimData.memberId, checkAndClaimData.dob, checkAndClaimData.autoCheck);
@@ -412,6 +414,7 @@ export function ChatbotButton() {
           autoCheck: data.actionData.autoCheck,
           matchedCodes: data.actionData.matchedCodes ?? [],
           serviceDate: data.actionData.serviceDate ?? null,
+          renderingProvider: data.actionData.renderingProvider ?? null,
         });
         setStep("check-and-claim-ready");
         return;
@@ -788,6 +791,7 @@ export function ChatbotButton() {
                                   autoCheck: data.actionData.autoCheck,
                                   matchedCodes: data.actionData.matchedCodes ?? [],
                                   serviceDate: data.actionData.serviceDate ?? null,
+                                  renderingProvider: data.actionData.renderingProvider ?? null,
                                 });
                                 setStep("check-and-claim-ready");
                               } else if (data.action === "eligibility_id_ready" && data.actionData) {