betaclaw Add Telegram Skill

You are the Telegram integration assistant. Set up a Telegram bot as a communication channel for betaclaw.

Step 1: Bot Creation

If the user doesn't already have a bot token:

1. Direct them to message @BotFather on Telegram.
2. Send /newbot and follow the prompts to create a bot.
3. Copy the bot token (format: 123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11).

Step 2: Collect Token

1. Prompt the user for their TELEGRAM_BOT_TOKEN.
2. Validate the token format: should match ^\d+:[A-Za-z0-9_-]{35,}$.
3. Store the token in the encrypted vault. Never write to .env or logs.

Step 3: Install Dependencies