feat(web): move view-all icon to sidebar header + add search to conversations page

- Replace bottom '查看全部' text link in sidebar with MoreOutlined icon + Tooltip
  in the '所有任务' section header (flex justify-between layout)
- Add debounced search input (SearchOutlined, 300ms) to /conversations page
- Implement client-side title filtering via filteredList useMemo
- Show distinct empty states: '暂无历史记录' vs '没有匹配的对话'

web/components/layout/side-bar.tsx

@@ -16,6 +16,7 @@ import Icon, {
   MenuFoldOutlined,
   MenuUnfoldOutlined,
   MessageOutlined,
+  MoreOutlined,
   PlusOutlined,
   SettingOutlined,
   ThunderboltOutlined,
@@ -341,8 +342,15 @@ function SideBar() {
 
       {/* All Tasks Section */}
       <div className='mt-4 mb-2 px-1'>
-        <div className='text-xs font-semibold text-gray-400 uppercase tracking-wider'>
-          {t('all_tasks')}
+        <div className='flex items-center justify-between'>
+          <span className='text-xs font-semibold text-gray-400 uppercase tracking-wider'>
+            {t('all_tasks')}
+          </span>
+          <Link href='/conversations'>
+            <Tooltip title='查看全部'>
+              <MoreOutlined className='text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 cursor-pointer transition-colors text-sm' />
+            </Tooltip>
+          </Link>
         </div>
       </div>
       <div className='flex-1 overflow-y-auto min-h-0'>

web/pages/conversations/index.tsx

@@ -0,0 +1,191 @@
+import { apiInterceptors, delDialogue, getDialogueListPaged } from '@/client/api';
+import { IChatDialogueSchema } from '@/types/chat';
+import { DeleteOutlined, MessageOutlined, SearchOutlined } from '@ant-design/icons';
+import { useRequest } from 'ahooks';
+import { Empty, Input, Pagination, Popconfirm, Spin, Tooltip, message } from 'antd';
+import debounce from 'lodash/debounce';
+import moment from 'moment';
+import 'moment/locale/zh-cn';
+import { useRouter } from 'next/router';
+import { useCallback, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+
+const PAGE_SIZE = 20;
+
+function ConversationsPage() {
+  const router = useRouter();
+  const { t } = useTranslation();
+  const [list, setList] = useState<IChatDialogueSchema[]>([]);
+  const [searchKeyword, setSearchKeyword] = useState('');
+
+  const handleSearch = useCallback(
+    debounce((value: string) => {
+      setSearchKeyword(value);
+    }, 300),
+    [],
+  );
+
+  const filteredList = useMemo(() => {
+    if (!searchKeyword.trim()) return list;
+    const keyword = searchKeyword.toLowerCase();
+    return list.filter(conv => {
+      const title = typeof conv.user_input === 'string' ? conv.user_input.toLowerCase() : '';
+      return title.includes(keyword);
+    });
+  }, [list, searchKeyword]);
+
+  const totalRef = useRef<{
+    current_page: number;
+    total_count: number;
+    total_pages: number;
+  }>();
+
+  const { loading, run: fetchList } = useRequest(
+    async (page = 1) =>
+      await apiInterceptors(
+        getDialogueListPaged({ chat_mode: 'chat_react_agent' }, page, PAGE_SIZE),
+      ),
+    {
+      defaultParams: [1],
+      onSuccess: data => {
+        const [, res] = data;
+        setList(res?.items || []);
+        totalRef.current = {
+          current_page: res?.page || 1,
+          total_count: res?.total_count || 0,
+          total_pages: res?.total_pages || 0,
+        };
+      },
+    },
+  );
+
+  const handleDelete = useCallback(
+    async (e: React.MouseEvent, convUid: string) => {
+      e.stopPropagation();
+      e.preventDefault();
+      const [err] = await apiInterceptors(delDialogue(convUid));
+      if (!err) {
+        message.success('已删除');
+        const current = totalRef.current;
+        if (current) {
+          const remaining = current.total_count - 1;
+          const maxPage = Math.max(1, Math.ceil(remaining / PAGE_SIZE));
+          fetchList(Math.min(current.current_page, maxPage));
+        }
+      }
+    },
+    [fetchList],
+  );
+
+  const formatTime = (dateStr?: string) => {
+    if (!dateStr) return '';
+    return moment(dateStr).fromNow();
+  };
+
+  const getTitle = (conv: IChatDialogueSchema) => {
+    if (typeof conv.user_input === 'string' && conv.user_input.trim()) {
+      return conv.user_input;
+    }
+    return t('new_task') || '新对话';
+  };
+
+  return (
+    <div className='flex flex-col h-full w-full dark:bg-gradient-dark bg-gradient-light'>
+      <div className='flex items-center justify-between px-6 py-5 border-b border-gray-100 dark:border-gray-800'>
+        <h1 className='text-xl font-semibold text-gray-800 dark:text-gray-100'>
+          {t('all_tasks') || '所有任务'}
+        </h1>
+        <div className='flex items-center gap-3'>
+          <Input
+            variant='filled'
+            prefix={<SearchOutlined />}
+            placeholder='搜索对话...'
+            onChange={e => handleSearch(e.target.value)}
+            onClear={() => setSearchKeyword('')}
+            allowClear
+            className='w-[230px] h-[36px] border-1 border-white backdrop-filter backdrop-blur-lg bg-white bg-opacity-30 dark:border-[#6f7f95] dark:bg-[#6f7f95] dark:bg-opacity-60'
+          />
+          <span className='text-sm text-gray-400 whitespace-nowrap'>
+            {totalRef.current ? `共 ${totalRef.current.total_count} 条` : ''}
+          </span>
+        </div>
+      </div>
+
+      <div className='flex-1 overflow-y-auto px-6 py-4'>
+        <Spin spinning={loading}>
+          {!loading && list.length === 0 ? (
+            <div className='flex items-center justify-center h-64'>
+              <Empty description={t('no_tasks') || '暂无历史记录'} />
+            </div>
+          ) : !loading && filteredList.length === 0 ? (
+            <div className='flex items-center justify-center h-64'>
+              <Empty description='没有匹配的对话' />
+            </div>
+          ) : (
+            <div className='space-y-1'>
+              {filteredList.map(conv => (
+                <div
+                  key={conv.conv_uid}
+                  onClick={() => router.push(`/?id=${conv.conv_uid}`)}
+                  className='group flex items-center gap-3 px-4 py-3 rounded-xl cursor-pointer transition-colors hover:bg-white dark:hover:bg-gray-800 hover:shadow-sm'
+                >
+                  <div className='flex-shrink-0 w-8 h-8 flex items-center justify-center rounded-full bg-gray-100 dark:bg-gray-700'>
+                    <MessageOutlined className='text-gray-400 text-sm' />
+                  </div>
+
+                  <div className='flex-1 min-w-0'>
+                    <div className='text-sm font-medium text-gray-700 dark:text-gray-200 truncate leading-5'>
+                      {getTitle(conv)}
+                    </div>
+                    {conv.gmt_created && (
+                      <div className='text-xs text-gray-400 mt-0.5'>{formatTime(conv.gmt_created)}</div>
+                    )}
+                  </div>
+
+                  <Popconfirm
+                    title='确认删除这条对话记录吗？'
+                    onConfirm={e => handleDelete(e as React.MouseEvent, conv.conv_uid)}
+                    onCancel={e => {
+                      e?.stopPropagation();
+                      e?.preventDefault();
+                    }}
+                    okText='删除'
+                    cancelText='取消'
+                    okButtonProps={{ danger: true }}
+                  >
+                    <Tooltip title='删除'>
+                      <div
+                        onClick={e => {
+                          e.stopPropagation();
+                          e.preventDefault();
+                        }}
+                        className='flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity'
+                      >
+                        <DeleteOutlined className='text-gray-300 hover:text-red-500 transition-colors' />
+                      </div>
+                    </Tooltip>
+                  </Popconfirm>
+                </div>
+              ))}
+            </div>
+          )}
+        </Spin>
+      </div>
+
+      {(totalRef.current?.total_count ?? 0) > PAGE_SIZE && (
+        <div className='flex justify-end px-6 py-4 border-t border-gray-100 dark:border-gray-800'>
+          <Pagination
+            current={totalRef.current?.current_page}
+            total={totalRef.current?.total_count || 0}
+            pageSize={PAGE_SIZE}
+            showSizeChanger={false}
+            showTotal={total => `共 ${total} 条`}
+            onChange={page => fetchList(page)}
+          />
+        </div>
+      )}
+    </div>
+  );
+}
+
+export default ConversationsPage;