Fix TypeScript errors: Update User type system across all storage implementations

src/lib/localstorage.db.ts

@@ -1,6 +1,6 @@
 /* eslint-disable no-console */
 import { AdminConfig } from './admin.types';
-import { EpisodeSkipConfig, Favorite, IStorage, PlayRecord, UserSettings } from './types';
+import { EpisodeSkipConfig, Favorite, IStorage, PlayRecord, User, UserSettings } from './types';
 
 /**
  * LocalStorage 存储实现
@@ -341,18 +341,38 @@ export class LocalStorage implements IStorage {
   }
 
   // ---------- 管理员功能 ----------
-  async getAllUsers(): Promise<string[]> {
+  async getAllUsers(): Promise<User[]> {
     if (typeof window === 'undefined') return [];
     
     try {
-      const users: string[] = [];
+      const users: User[] = [];
       const prefix = 'katelyatv_user_';
+      const ownerUsername = process.env.USERNAME || 'admin';
       
       for (let i = 0; i < localStorage.length; i++) {
         const storageKey = localStorage.key(i);
         if (storageKey && storageKey.startsWith(prefix)) {
-          const userName = storageKey.replace(prefix, '');
-          users.push(userName);
+          const username = storageKey.replace(prefix, '');
+          
+          // 尝试获取用户创建时间
+          let created_at = '';
+          try {
+            const userDataStr = localStorage.getItem(storageKey);
+            if (userDataStr) {
+              const userData = JSON.parse(userDataStr);
+              if (userData.created_at) {
+                created_at = new Date(userData.created_at).toISOString();
+              }
+            }
+          } catch (err) {
+            // 忽略解析错误
+          }
+          
+          users.push({
+            username,
+            role: username === ownerUsername ? 'owner' : 'user',
+            created_at
+          });
         }
       }