feat: optimize web ui

packages/web/src/lib/auth.tsx

@@ -9,6 +9,7 @@ type AuthContextType = {
   login: (email: string, password: string) => Promise<void>;
   register: (email: string, password: string, name: string) => Promise<void>;
   logout: () => void;
+  updateUser: (updates: Partial<User>) => void;
 };
 
 const AuthContext = createContext<AuthContextType | null>(null);
@@ -48,8 +49,12 @@ export function AuthProvider({ children }: { children: ReactNode }) {
 
   const logout = () => { clearTokens(); setUser(null); };
 
+  const updateUser = (updates: Partial<User>) => {
+    setUser(prev => prev ? { ...prev, ...updates } : null);
+  };
+
   return (
-    <AuthContext.Provider value={{ user, loading, login, register, logout }}>
+    <AuthContext.Provider value={{ user, loading, login, register, logout, updateUser }}>
       {children}
     </AuthContext.Provider>
   );