feat(adapters): Alist / OpenList 客户端与测试用模拟服务

登录(永久令牌优先、账号密码换令牌缓存、401 自动重登)、list 分页、get/raw_url、mkdir/rename/remove、
copy/move 轮询异步任务与暂存目录改名、上传(三种哈希一遍读出、临时名、空闲超时、退避重试、As-Task)、
下载(Range 续传、直链过期重取、临时文件改名)、容量、每实例限速与脱敏。

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

packages/adapters/package.json

@@ -4,6 +4,7 @@
   "type": "module",
   "exports": {
     ".": "./src/index.ts",
-    "./fsworker": "./src/fs/fsworker.ts"
+    "./fsworker": "./src/fs/fsworker.ts",
+    "./alist-mock": "./src/alist/mock.ts"
   }
 }