feat: add new frontend components, MH batch worker, and gitignore rules

- Add all new Frontend source files (pages, components, hooks, utils)
- Add selenium_MHBatchPaymentCheckWorker.py and MHSinglePaymentCheckWorker.py
- Add install-steps-5-13.sh setup script
- Update .gitignore to exclude runtime/sensitive data (backups, uploads,
  chat-history, keys, downloads, generated .d.ts files) while keeping folders
- Add .gitkeep to preserve empty runtime folders in git

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

apps/Frontend/src/lib/chatbotFileStore.js

@@ -0,0 +1,10 @@
+let pendingFiles = [];
+export function setChatbotPendingFiles(files) {
+    pendingFiles = [...files];
+}
+/** Returns and clears the stored files (consume-once). */
+export function takeChatbotPendingFiles() {
+    const files = [...pendingFiles];
+    pendingFiles = [];
+    return files;
+}

apps/Frontend/src/lib/protected-route.jsx

@@ -0,0 +1,17 @@
+import AppLayout from "@/components/layout/app-layout";
+import LoadingScreen from "@/components/ui/LoadingScreen";
+import { useAuth } from "@/hooks/use-auth";
+import { Suspense } from "react";
+import { Redirect, Route } from "wouter";
+export function ProtectedRoute({ path, component: Component, adminOnly = false, }) {
+    const { user, isLoading } = useAuth();
+    return (<Route path={path}>
+      {isLoading ? (<AppLayout>
+          <LoadingScreen />
+        </AppLayout>) : !user ? (<Redirect to="/auth"/>) : adminOnly && user.username !== "admin" ? (<Redirect to="/insurance-status"/>) : (<AppLayout>
+          <Suspense fallback={<LoadingScreen />}>
+            <Component />
+          </Suspense>
+        </AppLayout>)}
+    </Route>);
+}