refactor: 简化模型管理，移除启用/禁用，优化测试和布局

- 移除供应商/模型启用禁用能力，清理DB schema/migration/API/前端
- 供应商测试改为Base URL连通性+/models探测
- 新增POST /api/models/test模型连接测试
- 新增GET /api/providers/options专用供应商选项接口
- 统一工具栏为ModelsToolbar，参考项目管理布局
- 模型弹窗优化：默认能力、响应式3列标签、并排数值
- 前后端正整数校验、供应商下拉loading/error/empty状态
- 表格列宽统一，操作列/名称列固定宽度

tests/web/routes/models.test.tsx

@@ -12,7 +12,6 @@ const ENABLED_PROVIDER: Provider = {
   apiKey: "sk-test",
   baseUrl: "https://api.openai.com/v1",
   createdAt: "2024-01-01T00:00:00.000Z",
-  enabled: true,
   id: "pv1",
   name: "OpenAI",
   type: "openai",
@@ -23,7 +22,6 @@ const DISABLED_PROVIDER: Provider = {
   apiKey: "sk-off",
   baseUrl: "https://api.deepseek.com/v1",
   createdAt: "2024-01-01T00:00:00.000Z",
-  enabled: false,
   id: "pv2",
   name: "DeepSeek",
   type: "openai-compatible",
@@ -34,7 +32,6 @@ const ENABLED_MODEL: Model = {
   capabilities: ["text", "reasoning"],
   contextLength: 128000,
   createdAt: "2024-01-01T00:00:00.000Z",
-  enabled: true,
   id: "m1",
   maxOutputTokens: 4096,
   modelId: "gpt-4o",
@@ -165,8 +162,9 @@ describe("ModelFormModal", () => {
         },
         open: true,
         providers: [ENABLED_PROVIDER, DISABLED_PROVIDER],
+        providersError: null,
+        providersLoading: false,
         submitting: false,
-        testConnection: () => Promise.resolve({ message: "连接成功", ok: true }),
       }),
     );
 
@@ -190,8 +188,9 @@ describe("ModelFormModal", () => {
         onUpdate: () => Promise.resolve(),
         open: true,
         providers: [ENABLED_PROVIDER],
+        providersError: null,
+        providersLoading: false,
         submitting: false,
-        testConnection: () => Promise.resolve({ message: "连接成功", ok: true }),
       }),
     );
 
@@ -200,9 +199,7 @@ describe("ModelFormModal", () => {
     expect(onCreate).not.toHaveBeenCalled();
   });
 
-  test("新建模型时可测试所选供应商连接", async () => {
-    const testConnection = mock(() => Promise.resolve({ message: "连接成功", ok: true }));
-
+  test("新建模型默认选中文本和推理能力", async () => {
     renderWithProviders(
       createElement(ModelFormModal, {
         editingModel: null,
@@ -212,16 +209,111 @@ describe("ModelFormModal", () => {
         onUpdate: () => Promise.resolve(),
         open: true,
         providers: [ENABLED_PROVIDER],
+        providersError: null,
+        providersLoading: false,
         submitting: false,
-        testConnection,
       }),
     );
 
-    await waitFor(() => expect(screen.getByText("测试连接")).not.toBeNull());
+    await waitFor(() => expect(screen.getByLabelText("文本")).not.toBeNull());
+    const textCheckbox = screen.getByLabelText("文本");
+    const reasoningCheckbox = screen.getByLabelText("推理");
+    expect((textCheckbox as { checked?: boolean }).checked).toBe(true);
+    expect((reasoningCheckbox as { checked?: boolean }).checked).toBe(true);
+  });
+
+  test("新建模型展示供应商 options 列表", async () => {
+    renderWithProviders(
+      createElement(ModelFormModal, {
+        editingModel: null,
+        onCancel: () => undefined,
+        onCreate: () => Promise.resolve(),
+        onOpenChange: () => undefined,
+        onUpdate: () => Promise.resolve(),
+        open: true,
+        providers: [ENABLED_PROVIDER, DISABLED_PROVIDER],
+        providersError: null,
+        providersLoading: false,
+        submitting: false,
+      }),
+    );
+
+    await waitFor(() => expect(screen.getByPlaceholderText("请输入模型名称")).not.toBeNull());
     fireEvent.mouseDown(screen.getByRole("combobox"));
-    fireEvent.click(await screen.findByText("OpenAI"));
+
+    expect(await screen.findByText("OpenAI")).not.toBeNull();
+    expect(await screen.findByText("DeepSeek")).not.toBeNull();
+  });
+
+  test("供应商下拉展示加载错误提示", async () => {
+    renderWithProviders(
+      createElement(ModelFormModal, {
+        editingModel: null,
+        onCancel: () => undefined,
+        onCreate: () => Promise.resolve(),
+        onOpenChange: () => undefined,
+        onUpdate: () => Promise.resolve(),
+        open: true,
+        providers: [],
+        providersError: new Error("options failed"),
+        providersLoading: false,
+        submitting: false,
+      }),
+    );
+
+    await waitFor(() => expect(screen.getByPlaceholderText("请输入模型名称")).not.toBeNull());
+    fireEvent.mouseDown(screen.getByRole("combobox"));
+
+    expect(await screen.findByText("供应商加载失败：options failed")).not.toBeNull();
+  });
+
+  test("编辑模型时可测试模型连接", async () => {
+    const testModelConnection = mock(() => Promise.resolve({ message: "模型连接成功", ok: true }));
+
+    renderWithProviders(
+      createElement(ModelFormModal, {
+        editingModel: ENABLED_MODEL,
+        onCancel: () => undefined,
+        onCreate: () => Promise.resolve(),
+        onOpenChange: () => undefined,
+        onUpdate: () => Promise.resolve(),
+        open: true,
+        providers: [ENABLED_PROVIDER],
+        providersError: null,
+        providersLoading: false,
+        submitting: false,
+        testModelConnection,
+      }),
+    );
+
+    await waitFor(() => expect(screen.getByRole("button", { name: "测试连接" })).not.toBeNull());
     fireEvent.click(screen.getByRole("button", { name: "测试连接" }));
 
-    await waitFor(() => expect(testConnection).toHaveBeenCalledWith("pv1"));
+    await waitFor(() =>
+      expect(testModelConnection).toHaveBeenCalledWith({
+        modelId: "gpt-4o",
+        providerId: "pv1",
+      }),
+    );
+  });
+
+  test("新建模型也显示测试连接按钮", async () => {
+    renderWithProviders(
+      createElement(ModelFormModal, {
+        editingModel: null,
+        onCancel: () => undefined,
+        onCreate: () => Promise.resolve(),
+        onOpenChange: () => undefined,
+        onUpdate: () => Promise.resolve(),
+        open: true,
+        providers: [ENABLED_PROVIDER],
+        providersError: null,
+        providersLoading: false,
+        submitting: false,
+        testModelConnection: () => Promise.resolve({ message: "ok", ok: true }),
+      }),
+    );
+
+    await waitFor(() => expect(screen.getByRole("button", { name: "测试连接" })).not.toBeNull());
   });
 });