Update README.md

Author: Pigbibi

README.md

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 # 🤖 Telegram Auto Sign
 
-基于 GitHub Actions 和 Python (Telethon) 实现的 Telegram 每日自动签到脚本。利用个人账号 (Userbot) 每日自动向指定的 Telegram 机器人发送签到指令，彻底解放双手。
-
-## ✨ 核心特性
-- **☁️ 零成本部署**：依托 GitHub Actions 自动运行，无需本地服务器或 VPS。
-- **👥 多 Bot 支持**：支持同时向多个机器人发送签到指令。
-- **🎲 智能防风控**：内置 `1~20` 分钟随机延迟启动，以及消息发送间隔随机停顿，避免触发 TG 反垃圾机制。
-- **📝 自动日志保活**：每次运行后自动将签到结果写入 `checkin.log` 并推送到本仓库，完美绕过 GitHub Actions 60 天无代码提交自动暂停的限制。
-
-## 🚀 如何使用 (部署指南)
-
-### 1. 准备工作：获取 API 凭据
-1. 登录 [Telegram API 平台](https://my.telegram.org/)。
-2. 进入 **API development tools**，创建一个应用。
-3. 记下你的 `App api_id` 和 `App api_hash`。
-
-### 2. 准备工作：获取 Session String
-在本地电脑 Python 环境中安装依赖 `pip install telethon`，并运行以下代码获取你的专属 Session 字符串：
-```python
-import asyncio
-from telethon import TelegramClient
-from telethon.sessions import StringSession
-
-api_id = '你的 api_id'
-api_hash = '你的 api_hash'
-
-async def main():
-    client = TelegramClient(StringSession(), api_id, api_hash)
-    await client.start()
-    print("你的 Session 字符串是：\n", client.session.save())
-
-if __name__ == '__main__':
-    asyncio.run(main())
+An automated daily sign-in script for Telegram bots, powered by GitHub Actions and Python (Telethon). It uses your personal account (Userbot) to send sign-in commands (like `/qd`) to specified Telegram bots daily, completely freeing your hands.
+
+## ✨ Core Features
+* **☁️ Zero-Cost Deployment**: Runs entirely on GitHub Actions. No need for a local server or VPS.
+* **👥 Multi-Bot Support**: Capable of sending sign-in commands to multiple bots sequentially.
+* **🎲 Smart Anti-Ban System**: Built-in 1~20 minutes randomized startup delay and random pauses between messages to prevent triggering Telegram's spam filters.
+* **📝 Auto-Log Keepalive**: Automatically writes sign-in results to `checkin.log` and pushes it to the repository after each run. This perfectly bypasses GitHub Actions' 60-day inactivity suspension rule.
+
+## 🚀 Deployment Guide
+
+### Step 1: Get API Credentials
+1. Log in to the [Telegram API Development Tools](https://my.telegram.org/).
+2. Create a new application.
+3. Note down your `App api_id` and `App api_hash`.
+
+### Step 2: Get Session String
+Install the dependency (`pip install telethon`) on your local machine and run a script to generate your session string. 
+> ⚠️ **WARNING**: Treat your Session String like a password. NEVER share it publicly!
+
+### Step 3: Configure GitHub Repository Secrets
+1. Create a **Private** repository (Highly recommended for security).
+2. Go to `Settings` -> `Secrets and variables` -> `Actions`, and add the following 4 **Repository secrets**:
+   * `API_ID`: Your API ID (Numbers only).
+   * `API_HASH`: Your API Hash string.
+   * `SESSION_STRING`: The extremely long session string generated in Step 2.
+   * `BOT_USERNAME`: The target bot usernames, separated by commas (e.g., `@bot1, @bot2`).
+
+### Step 4: Grant Action Permissions
+To allow the script to push the log file back to the repository:
+1. Go to `Settings` -> `Actions` -> `General`.
+2. Scroll down to **Workflow permissions**.
+3. Select **Read and write permissions** and click `Save`.
+
+### Step 5: First Run & Test
+Go to the **Actions** tab, select the `Telegram Auto Sign` workflow on the left, and click `Run workflow` to test it manually. If successful, your account will send the commands, and a log file will appear in your repository!
+
+---
+
+## ⏱️ Schedule Modification
+The default trigger time is **00:00 UTC daily**. 
+To modify this, edit the cron expression in the `.github/workflows/checkin.yml` file.
+
+## ⚠️ Disclaimer
+This script is for educational and automated testing purposes only. Do not use it for high-frequency spamming or violating Telegram's Terms of Service. The user bears all responsibility for any account restrictions or bans caused by API abuse.