diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+MIT License
+
+Copyright (c) 2026 edgevoid
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
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+# 7z-encrypt-server 文件安全传输服务端
+
+7z-encrypt 文件安全传输系统的服务端。**零知识 + 零合并**：只存密文卷、不持密钥、不解密、不合并。
+
+```
+客户端上传密文卷 → 服务端只存卷 → 客户端逐卷下载 → 本地解密
+服务端手里永远只有密文: 没有密钥, 没有明文, 连文件名都是加密的
+```
+
+## 特性
+
+- **零知识**: 服务端无密钥不解密, 存储的全是密文卷, 管理员也看不到内容
+- **零合并**: complete 只校验卷齐 + 目录 move 入库, 秒回 (6 卷实测 1.1 秒), 服务端零 CPU 合并
+- **元数据零知识**: 文件名是客户端加密后的 URL-safe base64 (`enc:` 前缀), 服务端只见密文
+- **Bearer token 认证**: 无/错 token 一律 401
+- **卷级校验**: 每卷 SHA-256 校验, 坏卷 409 拒绝
+- **断点续传**: GET /chunks 查已收卷, 客户端只补传缺失卷
+- **空间配额**: 已用/配额/剩余/百分比
+- **文件管理**: ls / 逐卷下载 / 删除
+- **业务日志**: 所有端点事件 + 客户端 IP
+- **轻量**: FastAPI + SQLite, PRoot 容器 (手机 ZeroTermux) 都能跑
+
+## 快速部署
+
+```bash
+pip install fastapi uvicorn cryptography tqdm
+SZ_TOKEN=你的token python3 main.py      # 默认 0.0.0.0:8000
+```
+
+### 环境变量
+
+| 变量 | 默认 | 说明 |
+|---|---|---|
+| SZ_TOKEN | sz-dev-token-change-me | 认证 token (必须设置, 与客户端一致) |
+| SZ_QUOTA | 10GB | 空间配额 |
+| SZ_DB_PATH | data/app.db | SQLite 路径 |
+| SZ_STORAGE_ROOT | data/storage | 密文卷存储目录 |
+| SZ_TMP_ROOT | data/tmp | 上传临时目录 |
+| SZ_HOST / SZ_PORT | 0.0.0.0 / 8000 | 监听地址 |
+
+## API
+
+```
+POST /api/transfer/init           建任务           {transfer_id}
+PUT  /api/transfer/{id}/chunk/{n} 上传单卷密文     409 = 坏卷
+GET  /api/transfer/{id}/chunks    已收卷列表      断点续传
+POST /api/transfer/{id}/complete  卷齐入库(秒回)  {file_id}
+GET  /api/files                   文件列表        文件名是加密的
+GET  /api/files/{id}/chunk/{n}    下载单卷密文    X-Enc-Params 头带解密参数
+DELETE /api/files/{id}            删除文件
+GET  /api/quota                   空间配额
+全部端点需 Authorization: Bearer <token>
+```
+
+## 日志与自愈
+
+```
+/tmp/sz-server.log      业务日志 ([业务] 动作 IP 参数) + uvicorn 访问日志
+/tmp/sz-watchdog.log    看门狗日志
+tail -f /tmp/sz-server.log        # 实时看
+```
+
+- **start.sh**: 幂等拉起服务 + 看门狗 (已在跑则跳过), 容器重启自动恢复
+- **watchdog.sh**: 30 秒检查一次服务进程, 挂了自动拉起 (flock 防重复)
+- 容器唤醒钩子: `~/.bashrc` 末尾 `[ -f /root/server/start.sh ] && /root/server/start.sh`
+
+## 存储结构
+
+```
+data/
+  ├─ app.db              SQLite (transfers / files / chunks)
+  ├─ storage/日期/任务ID/  密文卷目录 (chunk_0001..N, 不合并)
+  └─ tmp/任务ID/          上传中的卷 (complete 后 move 入 storage)
+```
+
+## 测试
+
+```bash
+.venv/bin/pytest -q      # 9 项: 认证/全链路/坏卷/幂等/清洗/配额/删除
+```
+
+## 协议
+
+MIT License, Copyright (c) 2026 edgevoid