Add beenvoice mobile companion app with full dark mode support.

Expo app with dashboard, time clock, invoices, and settings — native tabs, glass UI, theme-aware components, and iOS Live Activities.

Co-authored-by: Cursor <cursoragent@cursor.com>

contexts/AuthContext.tsx

@@ -0,0 +1,50 @@
+import { expoClient } from "@better-auth/expo/client";
+import { createAuthClient } from "better-auth/react";
+import * as SecureStore from "expo-secure-store";
+import {
+  createContext,
+  useContext,
+  useMemo,
+  type ReactNode,
+} from "react";
+
+type AuthClient = ReturnType<typeof createAuthClient>;
+
+const AuthContext = createContext<AuthClient | null>(null);
+
+export function AuthProvider({
+  apiUrl,
+  storagePrefix,
+  children,
+}: {
+  apiUrl: string;
+  storagePrefix: string;
+  children: ReactNode;
+}) {
+  const client = useMemo(
+    () =>
+      createAuthClient({
+        baseURL: apiUrl,
+        plugins: [
+          expoClient({
+            scheme: "beenvoice",
+            storagePrefix,
+            storage: SecureStore,
+          }),
+        ],
+      }),
+    [apiUrl, storagePrefix],
+  );
+
+  return <AuthContext.Provider value={client}>{children}</AuthContext.Provider>;
+}
+
+export function useAuthClient() {
+  const client = useContext(AuthContext);
+  if (!client) throw new Error("useAuthClient must be used within AuthProvider");
+  return client;
+}
+
+export function useSession() {
+  return useAuthClient().useSession();
+}