refactor(web): 前端目录重构 — consoles/pages → layouts/features + shared

- consoles/admin/ → layouts/admin-layout/
- consoles/workbench/ → layouts/workbench-layout/ + features/chat/
- pages/ → features/ (dashboard, models, projects, not-found)
- components/ → shared/components/
- hooks/ → shared/hooks/
- utils/ → shared/utils/
- 更新所有 import 路径 (src/web/ + tests/web/)
- 更新开发文档 (README.md, frontend.md, architecture.md)

src/web/features/models/components/ModelsToolbar.tsx

@@ -0,0 +1,53 @@
+import { PlusOutlined } from "@ant-design/icons";
+import { Button, Flex, Input, Space, Tabs } from "antd";
+import { useState } from "react";
+
+interface ModelsToolbarProps {
+  activeTab: string;
+  keyword: string;
+  onSearch: (value: string) => void;
+  onSearchClear: () => void;
+  onTabChange: (key: string) => void;
+  openCreateDialog: () => void;
+}
+
+const TAB_ITEMS = [
+  { key: "models", label: "模型" },
+  { key: "providers", label: "供应商" },
+];
+
+export function ModelsToolbar({
+  activeTab,
+  keyword,
+  onSearch,
+  onSearchClear,
+  onTabChange,
+  openCreateDialog,
+}: ModelsToolbarProps) {
+  const [draftKeyword, setDraftKeyword] = useState(keyword);
+  const placeholder = activeTab === "providers" ? "搜索供应商名称" : "搜索模型名称或 ID";
+  const createLabel = activeTab === "providers" ? "新建供应商" : "新建模型";
+
+  return (
+    <Flex align="center" gap="large" justify="space-between" wrap="wrap">
+      <Tabs activeKey={activeTab} items={TAB_ITEMS} onChange={onTabChange} />
+      <Space size="small">
+        <Input.Search
+          allowClear
+          enterButton="搜索"
+          onChange={(event) => setDraftKeyword(event.target.value)}
+          onClear={() => {
+            setDraftKeyword("");
+            onSearchClear();
+          }}
+          onSearch={(value) => onSearch(value)}
+          placeholder={placeholder}
+          value={draftKeyword}
+        />
+        <Button icon={<PlusOutlined />} onClick={openCreateDialog} type="primary">
+          {createLabel}
+        </Button>
+      </Space>
+    </Flex>
+  );
+}