feat: 重构模型列表UI + 修复后端数据格式适配

模型列表 UI 重构：
- ModelSelector 从 Menu 折叠分组改为 Tabs 标签页 + 平铺列表
- 新增「全部模型」Tab + 各分类由 MODEL_CATEGORIES 数组控制顺序
- ModelItem 新增 hover 高亮效果 + 维护中模型禁用 + toast 提示
- 新增错误态（Result + 重试按钮）

后端数据格式适配：
- param_schema 类型从 string[] 改为 ParamSchemaItem[]（{id, map_to, spec, ui}）
- 修复 Form.Item 重复 key 报错（item.id 作 React key，item.map_to 作表单字段名）
- ModelsListResponseBody 字段类型收紧（model_type / category_name / quota_config）

数据层重构：
- useModelList 从 4 次并行请求改为 1 次全量拉取（后端 category 参数不可用）
- 分组键从 category_name 改为 model_type
- page_size 提升至 200

类型体系增强：
- type 别名改为 as const 数组推导（MODEL_CATEGORIES 单一数据源）
- 新增 CATEGORY_SLUG_MAP + resolveCategoryLabel + toCategorySlug 映射层
- 类型重命名 ModelCategory → ModelCategoryStringEnum

src/pages/home/components/ModelSelector.tsx

@@ -1,122 +1,235 @@
 // ============================================================
-// ModelSelector — 模型选择器（垂直单选列表，按类别分组）
+// ModelSelector — 模型选择器（Tabs 标签页分组 + 平铺列表）
 // 使用 useModelList() Hook 获取数据，组件仅负责渲染
 // ============================================================
 
-import { useMemo } from 'react';
-import { Menu, Spin, Empty, Tag, Typography, theme as antTheme } from 'antd';
+import React, { useState, useMemo, useCallback } from 'react';
+import { Tabs, Spin, Empty, Tag, Typography, Button, Result, message, theme as antTheme } from 'antd';
 import { AppstoreOutlined } from '@ant-design/icons';
 
-import { useModelList, MODEL_CATEGORY_LABELS } from '@/hooks/use-api';
+import { useModelList } from '@/hooks/use-api';
 import { useHomeContext } from '@/contexts/home-context';
-import type { ModelCategory } from '@/services/modules';
+import { resolveCategoryLabel, MODEL_CATEGORIES } from '@/services/modules';
+import type { ModelsListResponseBody, ModelCategoryStringEnum } from '@/services/modules';
 
 const { Text } = Typography;
 
-// ---------- 组件 ----------
+/** "全部模型" 的虚拟 tab key */
+const ALL_TAB_KEY = '__all__';
+
+// ---------- 单模型列表项（平铺） ----------
+
+/** 单个模型行：hover 高亮 + 选中态 + 状态标签 + 禁用态处理 */
+interface ModelItemProps {
+    model: ModelsListResponseBody;
+    isSelected: boolean;
+    onSelect: () => void;
+}
+
+function ModelItem({ model, isSelected, onSelect }: ModelItemProps) {
+    const { token } = antTheme.useToken();
+    const [isHovered, setIsHovered] = useState(false);
+
+    // 维护中的模型不可选
+    const isDisabled = model.status === 'maintenance';
+
+    const handleClick = useCallback(() => {
+        if (isDisabled) {
+            message.warning(`${model.name} 正在维护中，暂不可用`);
+            return;
+        }
+        onSelect();
+    }, [isDisabled, model.name, onSelect]);
+
+    // 背景色 / 边框色 优先级：选中 > hover > 默认
+    let bgColor = 'transparent';
+    let borderColor = 'transparent';
+    if (isSelected) {
+        bgColor = token.colorPrimaryBg;
+        borderColor = token.colorPrimaryBorder;
+    } else if (isHovered && !isDisabled) {
+        bgColor = token.colorFillSecondary;
+        borderColor = token.colorBorderSecondary;
+    }
+
+    return (
+        <div
+            onClick={handleClick}
+            onMouseEnter={() => setIsHovered(true)}
+            onMouseLeave={() => setIsHovered(false)}
+            style={{
+                padding: '6px 12px',
+                cursor: isDisabled ? 'not-allowed' : 'pointer',
+                borderRadius: 6,
+                background: bgColor,
+                border: `1px solid ${borderColor}`,
+                opacity: isDisabled ? 0.5 : 1,
+                display: 'flex',
+                alignItems: 'center',
+                justifyContent: 'space-between',
+                gap: 8,
+                transition: 'background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease',
+            }}
+        >
+            <Text
+                style={{
+                    flex: 1,
+                    overflow: 'hidden',
+                    textOverflow: 'ellipsis',
+                    whiteSpace: 'nowrap',
+                    fontSize: 13,
+                    color: isSelected ? token.colorPrimaryText : token.colorText,
+                }}
+                title={model.name}
+            >
+                {model.name}
+            </Text>
+            {model.status !== 'active' && (
+                <Tag
+                    color={model.status === 'inactive' ? 'default' : 'orange'}
+                    style={{ fontSize: 10, lineHeight: '16px', padding: '0 4px' }}
+                >
+                    {model.status === 'maintenance' ? '维护' : '停用'}
+                </Tag>
+            )}
+        </div>
+    );
+}
+
+// ---------- 主组件 ----------
 
 export function ModelSelector() {
-   const { token } = antTheme.useToken();
-   const { selectedModel, setSelectedModel } = useHomeContext();
-   const { data: models, loading, groupedModels } = useModelList();
+    const { token } = antTheme.useToken();
+    const { selectedModel, setSelectedModel } = useHomeContext();
+    const { data: models, loading, error, groupedModels, refetch } = useModelList();
+    const [activeTab, setActiveTab] = useState(ALL_TAB_KEY);
 
-   // 构建 Menu items：分组标题 + 模型项
-   const menuItems = useMemo(() => {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      const items: any[] = [];
+    // 当前 Tab 对应的模型列表
+    const filteredModels:ModelsListResponseBody[] = useMemo(() => {
+        if (activeTab === ALL_TAB_KEY) return models ?? [];
+        return groupedModels.get(activeTab) ?? [];
+    }, [activeTab, models, groupedModels]);
 
-      groupedModels.forEach((groupModels, category) => {
-         const categoryLabel = MODEL_CATEGORY_LABELS[category as ModelCategory] || category;
-         items.push({
-            key: `group-${category}`,
-            label: (
-               <Text strong style={{ fontSize: 12, color: token.colorTextSecondary }}>
-                  {categoryLabel} ({groupModels.length})
-               </Text>
-            ),
-            type: 'group' as const,
-            children: groupModels.map((model) => ({
-               key: model.id,
-               label: (
-                  <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', gap: 8 }}>
-                     <Text
-                        style={{
-                           flex: 1,
-                           overflow: 'hidden',
-                           textOverflow: 'ellipsis',
-                           whiteSpace: 'nowrap',
-                           fontSize: 13,
-                        }}
-                        title={model.name}
-                     >
-                        {model.name}
-                     </Text>
-                     {model.status !== 'active' && (
-                        <Tag
-                           color={model.status === 'inactive' ? 'default' : 'orange'}
-                           style={{ fontSize: 10, lineHeight: '16px', padding: '0 4px' }}
-                        >
-                           {model.status === 'maintenance' ? '维护' : '停用'}
-                        </Tag>
-                     )}
-                  </div>
-               ),
-            })),
-         });
-      });
+    // 构建 Tab 项（全部 + 各分类，顺序由 MODEL_CATEGORIES 控制）
+    const tabItems: { key: string; label: React.ReactNode }[] = useMemo(() => {
+        const items: { key: string; label: React.ReactNode }[] = [
+            {
+                key: ALL_TAB_KEY,
+                label: `全部 (${models?.length ?? 0})`,
+            },
+        ];
 
-      return items;
-   }, [groupedModels, token.colorTextSecondary]);
+        // 按 MODEL_CATEGORIES 定义的顺序遍历，确保 Tab 顺序可控
+        const seenCategories = new Set<string>();
+        MODEL_CATEGORIES.forEach((cat: ModelCategoryStringEnum) => {
+            const groupModels = groupedModels.get(cat);
+            if (groupModels && groupModels.length > 0) {
+                seenCategories.add(cat);
+                items.push({
+                    key: cat,
+                    label: `${resolveCategoryLabel(cat)} (${groupModels.length})`,
+                });
+            }
+        });
 
-   // 选中菜单项
-   const handleSelect = ({ key }: { key: string }) => {
-      const model = models?.find((m) => m.id === key);
-      if (model) {
-         setSelectedModel(model);
-      }
-   };
+        // 兜底：API 返回了 MODEL_CATEGORIES 中未注册的新分类，追加到末尾
+        groupedModels.forEach((groupModels, category) => {
+            if (!seenCategories.has(category) && groupModels.length > 0) {
+                items.push({
+                    key: category,
+                    label: `${resolveCategoryLabel(category)} (${groupModels.length})`,
+                });
+            }
+        });
 
-   // 加载态
-   if (loading) {
-      return (
-         <div style={{ display: 'flex', justifyContent: 'center', padding: 24 }}>
-            <Spin size="small" />
-         </div>
-      );
-   }
+        return items;
+    }, [models, groupedModels]);
 
-   // 空态
-   if (!models || models.length === 0) {
-      return <Empty description="暂无可用模型" image={Empty.PRESENTED_IMAGE_SIMPLE} />;
-   }
+    // ---------- 加载态 ----------
 
-   // 选中 key
-   const selectedKeys = selectedModel ? [selectedModel.id] : [];
+    if (loading) {
+        return (
+            <div style={{ display: 'flex', justifyContent: 'center', padding: 24 }}>
+                <Spin size="small" />
+            </div>
+        );
+    }
 
-   return (
-      <div style={{ flex: 1, overflow: 'auto', minHeight: 0 }}>
-         <div
-            style={{
-               padding: '8px 12px',
-               borderBottom: `1px solid ${token.colorBorderSecondary}`,
-               display: 'flex',
-               alignItems: 'center',
-               gap: 6,
-            }}
-         >
-            <AppstoreOutlined style={{ color: token.colorPrimary, fontSize: 14 }} />
-            <Text strong style={{ fontSize: 13 }}>选择模型</Text>
-         </div>
-         <Menu
-            mode="inline"
-            selectedKeys={selectedKeys}
-            onSelect={handleSelect}
-            items={menuItems}
-            style={{
-               borderInlineEnd: 'none',
-               background: 'transparent',
-            }}
-         />
-      </div>
-   );
-}
+    // ---------- 错误态 ----------
+
+    if (error) {
+        return (
+            <Result
+                status="error"
+                title="模型列表加载失败"
+                subTitle={error.message || '请检查网络连接后重试'}
+                extra={
+                    <Button type="primary" size="small" onClick={refetch}>
+                        重试
+                    </Button>
+                }
+            />
+        );
+    }
+
+    // ---------- 空态 ----------
+
+    if (!models || models.length === 0) {
+        return <Empty description="暂无可用模型" image={Empty.PRESENTED_IMAGE_SIMPLE} />;
+    }
+
+    // ---------- 正常渲染 ----------
+
+    return (
+        <div style={{ flex: 1, overflow: 'hidden', display: 'flex', flexDirection: 'column', minHeight: 0 }}>
+            {/* 标题栏 */}
+            <div
+                style={{
+                    padding: '8px 12px',
+                    borderBottom: `1px solid ${token.colorBorderSecondary}`,
+                    display: 'flex',
+                    alignItems: 'center',
+                    gap: 6,
+                    flexShrink: 0,
+                }}
+            >
+                <AppstoreOutlined style={{ color: token.colorPrimary, fontSize: 14 }} />
+                <Text strong style={{ fontSize: 13 }}>
+                    选择模型
+                </Text>
+            </div>
+
+            {/* 分类 Tabs */}
+            <Tabs
+                activeKey={activeTab}
+                onChange={setActiveTab}
+                items={tabItems}
+                size="small"
+                type="card"
+                tabBarStyle={{ margin: '0 0 4px 0', padding: '0 8px' }}
+            />
+
+            {/* 模型列表 */}
+            <div style={{ flex: 1, overflow: 'auto', padding: '0 8px 8px' }}>
+                {filteredModels.length === 0 ? (
+                    <Empty
+                        description="该分类暂无模型"
+                        image={Empty.PRESENTED_IMAGE_SIMPLE}
+                        style={{ marginTop: 24 }}
+                    />
+                ) : (
+                    <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
+                        {filteredModels.map((model) => (
+                            <ModelItem
+                                key={model.id}
+                                model={model}
+                                isSelected={selectedModel?.id === model.id}
+                                onSelect={() => setSelectedModel(model)}
+                            />
+                        ))}
+                    </div>
+                )}
+            </div>
+        </div>
+    );
+}