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/server/db/providers.ts

@@ -3,7 +3,7 @@ import type Database from "bun:sqlite";
 import { and, desc, eq, like, sql } from "drizzle-orm";
 import { drizzle } from "drizzle-orm/bun-sqlite";
 
-import type { CreateProviderRequest, Provider, UpdateProviderRequest } from "../../shared/api";
+import type { CreateProviderRequest, Provider, ProviderOption, UpdateProviderRequest } from "../../shared/api";
 
 import { providers } from "./schema";
 
@@ -30,7 +30,6 @@ export function createProvider(
         apiKey,
         baseUrl,
         createdAt: now,
-        enabled: true,
         id,
         name,
         type: request.type,
@@ -58,32 +57,6 @@ export function deleteProvider(raw: Database, id: string): { error: string; stat
   return { success: true };
 }
 
-export function disableProvider(raw: Database, id: string): { error: string; status: number } | { provider: Provider } {
-  const db = wrap(raw);
-  const existing = db.select().from(providers).where(eq(providers.id, id)).get();
-  if (!existing) return { error: "供应商不存在", status: 404 };
-  if (!existing.enabled) return { error: "供应商已禁用", status: 409 };
-
-  const now = new Date().toISOString();
-  db.update(providers).set({ enabled: false, updatedAt: now }).where(eq(providers.id, id)).run();
-
-  const updated = db.select().from(providers).where(eq(providers.id, id)).get();
-  return { provider: toProvider(updated!) };
-}
-
-export function enableProvider(raw: Database, id: string): { error: string; status: number } | { provider: Provider } {
-  const db = wrap(raw);
-  const existing = db.select().from(providers).where(eq(providers.id, id)).get();
-  if (!existing) return { error: "供应商不存在", status: 404 };
-  if (existing.enabled) return { error: "供应商已启用", status: 409 };
-
-  const now = new Date().toISOString();
-  db.update(providers).set({ enabled: true, updatedAt: now }).where(eq(providers.id, id)).run();
-
-  const updated = db.select().from(providers).where(eq(providers.id, id)).get();
-  return { provider: toProvider(updated!) };
-}
-
 export function getProvider(raw: Database, id: string): { error: string; status: number } | { provider: Provider } {
   const db = wrap(raw);
   const row = db.select().from(providers).where(eq(providers.id, id)).get();
@@ -92,6 +65,17 @@ export function getProvider(raw: Database, id: string): { error: string; status:
   return { provider: toProvider(row) };
 }
 
+export function listProviderOptions(raw: Database): ProviderOption[] {
+  const db = wrap(raw);
+  const rows = db
+    .select({ id: providers.id, name: providers.name, type: providers.type })
+    .from(providers)
+    .orderBy(desc(providers.createdAt))
+    .all();
+
+  return rows;
+}
+
 export function listProviders(
   raw: Database,
   options: { keyword?: string; page: number; pageSize: number },
@@ -189,7 +173,6 @@ function toProvider(row: typeof providers.$inferSelect): Provider {
     apiKey: row.apiKey,
     baseUrl: row.baseUrl,
     createdAt: row.createdAt,
-    enabled: row.enabled,
     id: row.id,
     name: row.name,
     type: row.type,