fix: 替换所有测试文件的 rm 为 retryRm，修复 Windows EBUSY

tests/core/assembler.test.ts

@@ -1,5 +1,6 @@
 import { describe, it, expect, beforeEach, afterEach } from "bun:test";
-import { mkdir, writeFile, rm } from "node:fs/promises";
+import { mkdir, writeFile } from "node:fs/promises";
+import { retryRm } from "../helpers/cleanup.ts";
 import { join } from "node:path";
 import {
   assembleDiscussPrompt,
@@ -18,7 +19,7 @@ beforeEach(async () => {
 });
 
 afterEach(async () => {
-  await rm(TMP_DIR, { recursive: true, force: true });
+  await retryRm(TMP_DIR);
 });
 
 describe("assembleDiscussPrompt", () => {