feat: United/DentalHub claim submission automation and patient list sync

- Add full Selenium automation for United/DentalHub claim submission
  (steps 1-8: login, OTP, patient search, practitioner page, code entry,
  other coverage No, attachments, submit, Status & History PDF)
- Consolidate UnitedDH siteKey to UNITED_SCO throughout app
- Fix procedure date overwrite with Ctrl+A+Delete before typing service date
- Fix OTP popup reliability: emit every poll (no throttle)
- Fix Chrome session persistence: only clear cookies on startup
- Add touchPatient() to storage: claim submission now pushes patient to
  top of list across eligibility, claims, and documents pages

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

apps/Backend/src/storage/patients-storage.ts

@@ -15,6 +15,7 @@ export interface IStorage {
   getPatientsByIds(ids: number[]): Promise<Patient[]>;
   createPatient(patient: InsertPatient): Promise<Patient>;
   updatePatient(id: number, patient: UpdatePatient): Promise<Patient>;
+  touchPatient(id: number): Promise<void>;
   deletePatient(id: number): Promise<void>;
   searchPatients(args: {
     filters: any;
@@ -105,6 +106,15 @@ export const patientsStorage: IStorage = {
     }
   },
 
+  async touchPatient(id: number): Promise<void> {
+    try {
+      await db.patient.update({
+        where: { id },
+        data: { updatedAt: new Date() },
+      });
+    } catch (_) {}
+  },
+
   async deletePatient(id: number): Promise<void> {
     try {
       await db.patient.delete({ where: { id } });