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

src/web/hooks/use-models.ts

@@ -1,6 +1,15 @@
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 
-import type { CreateModelRequest, Model, ModelListResponse, ModelResponse, UpdateModelRequest } from "../../shared/api";
+import type {
+  CreateModelRequest,
+  Model,
+  ModelListResponse,
+  ModelResponse,
+  ModelTestResponse,
+  ModelTestResultResponse,
+  TestModelRequest,
+  UpdateModelRequest,
+} from "../../shared/api";
 
 const MODELS_KEY = ["models"] as const;
 
@@ -21,16 +30,6 @@ export async function deleteModel(id: string): Promise<void> {
   }
 }
 
-export async function disableModel(id: string): Promise<Model> {
-  const response = await fetch(`/api/models/${id}/disable`, { method: "POST" });
-  return handleResponse(response);
-}
-
-export async function enableModel(id: string): Promise<Model> {
-  const response = await fetch(`/api/models/${id}/enable`, { method: "POST" });
-  return handleResponse(response);
-}
-
 export async function fetchModel(id: string): Promise<Model> {
   const response = await fetch(`/api/models/${id}`);
   return handleResponse(response);
@@ -57,6 +56,20 @@ export async function fetchModelList(params: {
   return response.json() as Promise<ModelListResponse>;
 }
 
+export async function testModelConnection(data: TestModelRequest): Promise<ModelTestResponse> {
+  const response = await fetch("/api/models/test", {
+    body: JSON.stringify(data),
+    headers: { "Content-Type": "application/json" },
+    method: "POST",
+  });
+  if (!response.ok) {
+    const body = (await response.json().catch(() => null)) as null | { error?: string };
+    throw new Error(body?.error ?? `HTTP ${response.status}`);
+  }
+  const result = (await response.json()) as ModelTestResultResponse;
+  return result.modelTestResponse;
+}
+
 export async function updateModel(id: string, data: UpdateModelRequest): Promise<Model> {
   const response = await fetch(`/api/models/${id}`, {
     body: JSON.stringify(data),
@@ -86,26 +99,6 @@ export function useDeleteModel() {
   });
 }
 
-export function useDisableModel() {
-  const queryClient = useQueryClient();
-  return useMutation({
-    mutationFn: disableModel,
-    onSuccess: () => {
-      void queryClient.invalidateQueries({ queryKey: MODELS_KEY });
-    },
-  });
-}
-
-export function useEnableModel() {
-  const queryClient = useQueryClient();
-  return useMutation({
-    mutationFn: enableModel,
-    onSuccess: () => {
-      void queryClient.invalidateQueries({ queryKey: MODELS_KEY });
-    },
-  });
-}
-
 export function useModel(id: string) {
   return useQuery({
     enabled: !!id,
@@ -121,6 +114,12 @@ export function useModelList(params: { keyword?: string; page?: number; pageSize
   });
 }
 
+export function useTestModelConnection() {
+  return useMutation({
+    mutationFn: testModelConnection,
+  });
+}
+
 export function useUpdateModel() {
   const queryClient = useQueryClient();
   return useMutation({