feat: United/DentalHub + Tufts SCO pre-auth, cloud storage search & file thumbnails

- Add United/DentalHub pre-authorization Selenium worker, helpers, backend route/processor/client, and frontend OTP modal + wired button
- Add Tufts SCO pre-authorization Selenium worker, helpers, backend route/processor/client, and frontend OTP modal + wired button
- Fix btnSubmitAuthorization selector for UnitedDH preauth step2
- Fix Tufts SCO preauth step3 to target <span>pre-authorization</span> button
- Cloud storage search: default to "both" mode so patient folder names match on first search
- Cloud storage folder panel: auto-scroll to panel when opened from search results
- Cloud storage files: show inline image thumbnails and PDF badge in file grid

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

apps/Frontend/src/pages/cloud-storage-page.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import { useSearch } from "wouter";
 import { useQueryClient } from "@tanstack/react-query";
 import { Button } from "@/components/ui/button";
@@ -28,6 +28,7 @@ export default function CloudStoragePage() {
   const [panelInitialFolderId, setPanelInitialFolderId] = useState<
     number | null
   >(null);
+  const panelRef = useRef<HTMLDivElement>(null);
 
   // Deep-link: if navigated here with ?folderId=XXX, open that folder automatically
   useEffect(() => {
@@ -53,6 +54,9 @@ export default function CloudStoragePage() {
   function handleOpenFolder(folderId: number | null) {
     setPanelInitialFolderId(folderId);
     setPanelOpen(true);
+    setTimeout(() => {
+      panelRef.current?.scrollIntoView({ behavior: "smooth", block: "start" });
+    }, 50);
   }
 
   function handleSelectFile(fileId: number) {
@@ -131,6 +135,7 @@ export default function CloudStoragePage() {
       />
 
       {/* FolderPanel lives in page so it can be reused with other UI */}
+      <div ref={panelRef} />
       {panelOpen && (
         <FolderPanel
           folderId={panelInitialFolderId}