feat: DDMA claim submission with OTP, PDF, claim number extraction

- Add full DDMA claim Selenium flow (steps 1-8): search patient, open
  member page, create claim, fill form, attach files, next, submit,
  extract claim number and save confirmation PDF
- Add fee schedule price-mismatch dialog for all claim buttons (MH,
  CCA, DDMA, United, Tufts, Save) with optional price update to JSON
- Add OTP modal for DDMA claim when session expires, mirroring
  eligibility OTP flow
- Close Chrome after claim submission via quit_driver() (session
  preserved in profile)
- Move Map Price button between Direct Submission and procedure table,
  right-aligned above Billed Amount column
- Add fee-schedule update-price backend route
- Add DDMA claim processor with claimNumber/pdf_url result handling

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

apps/Backend/src/services/seleniumDDMAClaimClient.ts

@@ -0,0 +1,35 @@
+import axios from "axios";
+
+const SELENIUM_BASE = process.env.SELENIUM_SERVICE_URL ?? "http://localhost:5002";
+
+/**
+ * POST /ddma-claim
+ * Returns { status: "started", session_id: "<uuid>" }
+ */
+export async function forwardToSeleniumDDMAClaimAgent(
+  data: Record<string, any>
+): Promise<{ status: string; session_id: string }> {
+  const resp = await axios.post(`${SELENIUM_BASE}/ddma-claim`, data);
+  return resp.data;
+}
+
+/**
+ * GET /session/{sid}/status
+ */
+export async function getSeleniumDDMAClaimSessionStatus(
+  sessionId: string
+): Promise<Record<string, any>> {
+  const resp = await axios.get(`${SELENIUM_BASE}/session/${sessionId}/status`);
+  return resp.data;
+}
+
+/**
+ * POST /session/{sid}/submit-otp
+ */
+export async function forwardOtpToSeleniumDDMAClaimAgent(
+  sessionId: string,
+  otp: string
+): Promise<Record<string, any>> {
+  const resp = await axios.post(`${SELENIUM_BASE}/submit-otp`, { session_id: sessionId, otp });
+  return resp.data;
+}