ui模块优化 全部navigationmanager管理

实现pastgirllistpanel逻辑
完善图集

assets/Scripts/chat18x/manager/ChatHistoryManager.ts

@@ -41,10 +41,22 @@ export class ChatHistoryManager {
   public saveHistory(roleId: number, messages: ChatMessage[]): void {
     const key = `chat_history_${roleId}`;
     try {
+      // 检查是否已存在历史记录以保留创建时间
+      let createdAt = Date.now();
+      const existingData = sys.localStorage.getItem(key);
+      if (existingData) {
+        try {
+          const existingHistory: ChatHistory = JSON.parse(existingData);
+          createdAt = existingHistory.createdAt;
+        } catch (parseError) {
+          console.warn(`Failed to parse existing history for role ${roleId}, using current time as createdAt`);
+        }
+      }
+
       const history: ChatHistory = {
         roleId: roleId,
         messages: messages,
-        createdAt: Date.now(),
+        createdAt: createdAt,
         updatedAt: Date.now(),
       };
 
@@ -200,6 +212,31 @@ export class ChatHistoryManager {
     }
   }
 
+  /**
+   * 获取指定角色的最后聊天时间
+   * @param roleId 角色ID
+   * @returns 最后聊天时间戳，如果没有历史记录则返回null
+   */
+  public getLastChatTime(roleId: number): number | null {
+    const key = `chat_history_${roleId}`;
+    try {
+      const data = sys.localStorage.getItem(key);
+      if (data) {
+        const history: ChatHistory = JSON.parse(data);
+        if (history.messages && history.messages.length > 0) {
+          // 获取最后一条消息的时间戳
+          const lastMessage = history.messages[history.messages.length - 1];
+          return lastMessage.timestamp || history.updatedAt;
+        }
+        // 如果有历史但没有消息，返回创建时间
+        return history.createdAt;
+      }
+    } catch (error) {
+      console.error(`Failed to get last chat time for role ${roleId}:`, error);
+    }
+    return null;
+  }
+
   /**
    * 从远程服务器下载历史（预留接口）
    * @param roleId 角色ID