feat: remove read-only mode warning in history panel

- Remove outdated warning message since history continuation is now supported
- Clean up unused i18n keys (readonly_mode_title, readonly_mode_message, readonly_mode_description)
- Improve user experience by removing misleading information

Author: lsustc

src/components/history/HistoryPanel.tsx

@@ -181,18 +181,6 @@ export const HistoryPanel: React.FC<HistoryPanelProps> = ({
           onSelectItem={handleSelectItem}
           onDeleteTask={handleDeleteTask}
         />
-
-        {/* Information message */}
-        {!isTaskDetailMode && (
-          <div className="text-center text-sm p-4 rounded-lg" style={{ backgroundColor: 'rgba(255, 149, 0, 0.1)' }}>
-            <div className="font-medium mb-1" style={{ color: '#FF9500' }}>
-              📋 {t('readonly_mode_title')}
-            </div>
-            <div className="opacity-80">
-              {t('readonly_mode_description')}
-            </div>
-          </div>
-        )}
       </div>
     </Drawer>
   );

src/locales/en-US/history.json

@@ -31,15 +31,12 @@
   "delete_task": "Delete task",
   "executions_count": "{{count}} executions",
   "messages_count": "{{count}} messages",
-  "readonly_mode_title": "History Session is Read-Only Mode",
-  "readonly_mode_message": "Selecting history will enter view mode and you cannot continue the conversation temporarily...",
   "confirm_delete_scheduled_executions": "Are you sure you want to delete all {{count}} execution history records for this scheduled task? This action cannot be undone.",
   "confirm_delete_task": "Are you sure you want to delete this history task? This action cannot be undone.",
   "confirm_clear_execution_history": "Are you sure you want to clear all execution history for this task? This action cannot be undone.",
   "confirm": "Confirm",
   "cancel": "Cancel",
   "id_short": "ID",
   "created": "Created",
-  "updated": "Updated",
-  "readonly_mode_description": "Selecting history will enter view mode and you cannot continue the conversation temporarily. To continue similar tasks, click the DeepFundAI icon to create a new session."
+  "updated": "Updated"
 }

src/locales/zh-CN/history.json

@@ -31,15 +31,12 @@
   "delete_task": "删除任务",
   "executions_count": "{{count}} 次执行",
   "messages_count": "{{count}} 条消息",
-  "readonly_mode_title": "历史会话为只读模式",
-  "readonly_mode_message": "选择历史记录将进入查看模式，暂时无法继续对话...",
   "confirm_delete_scheduled_executions": "确定要删除此定时任务的所有 {{count}} 条执行历史记录吗？此操作无法撤销。",
   "confirm_delete_task": "确定要删除这条历史任务吗？此操作无法撤销。",
   "confirm_clear_execution_history": "确定要清空此任务的所有执行历史吗？此操作无法撤销。",
   "confirm": "确认",
   "cancel": "取消",
   "id_short": "ID",
   "created": "创建",
-  "updated": "更新",
-  "readonly_mode_description": "选择历史记录将进入查看模式，暂时无法继续对话。要继续类似任务，请点击 DeepFundAI 图标创建新会话。"
+  "updated": "更新"
 }