[BUG] v0.2.4 discord can not work

[axwfae]

Quick Summary

1. 1. It works fine in v0.2.3, but stops working after switching to v0.2.4!
2. Even after entering the correct bot token, the system reported an error and could not store the data!

Environment & Tools

• PicoClaw Version: v0.2.4
• Go Version: (e.g., go 1.22)
• AI Model & Provider: (e.g., GPT-4o via OpenAI / DeepSeek via SiliconFlow)
• Operating System: (e.g., Ubuntu 22.04 / macOS / Android Termux)
• Channels: (e.g., Discord, Telegram, Feishu, ...)

📸 Steps to Reproduce

1. v0.2.3 discord test ok
2. up to v0.2.4

❌ Actual Behavior

1. can't save bot token

✅ Expected Behavior

💬 Additional Context