fix: 消除并发测试中的 tool 导出竞争和 SQLite 目录碰撞

tests/server/routes/models.test.ts

@@ -1,11 +1,12 @@
 import type Database from "bun:sqlite";
 
-import { describe, expect, mock, test } from "bun:test";
+import { describe, expect, test } from "bun:test";
 
 import type { Model, RuntimeMode } from "../../../src/shared/api";
 
 import { createNoopLogger } from "../../../src/server/logger";
 import { createMigratedMemoryTestDatabase } from "../../helpers";
+import "../mocks/ai";
 
 const MODE: RuntimeMode = "test";
 const LOG = createNoopLogger();
@@ -49,13 +50,6 @@ async function listModelsViaHandler(req: Request, db: Database): Promise<Respons
 import { createModel } from "../../../src/server/db/models";
 import { createProvider } from "../../../src/server/db/providers";
 
-void mock.module("ai", () => ({
-  createProviderRegistry: () => ({
-    languageModel: () => ({}),
-  }),
-  generateText: () => Promise.resolve({ text: "Hi" }),
-}));
-
 function seedProvider(db: Database, name?: string): string {
   const result = createProvider(
     db,