fix: 修复 Windows 平台测试兼容性问题

- 新增 tests/helpers.ts 的 rmRetry 工具函数，解决 SQLite 文件句柄未及时释放导致 afterAll 清理时 EBUSY 错误
- 修改通配符测试用例，使用 bun -e 替代 echo 命令，确保跨平台行为一致

tests/server/app.test.ts

@@ -1,5 +1,5 @@
 import { afterAll, beforeAll, describe, expect, test } from "bun:test";
-import { mkdir, rm } from "node:fs/promises";
+import { mkdir } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 
@@ -10,6 +10,7 @@ import { checkerRegistry } from "../../src/server/checker/runner";
 import { CommandChecker } from "../../src/server/checker/runner/command/runner";
 import { HttpChecker } from "../../src/server/checker/runner/http/runner";
 import { ProbeStore } from "../../src/server/checker/store";
+import { rmRetry } from "../helpers";
 
 function ensureRegistered() {
   if (!checkerRegistry.supportedTypes.includes("http")) {
@@ -100,7 +101,7 @@ describe("API 路由", () => {
 
   afterAll(async () => {
     store.close();
-    await rm(tempDir, { force: true, recursive: true });
+    await rmRetry(tempDir);
   });
 
   test("/health 返回健康检查", async () => {