giangthb

#!/usr/bin/env python3
"""
fix-thinking-blocks.py — Fix Anthropic "thinking blocks cannot be modified" error

TRIỆU CHỨNG:
- User gửi message vào chat (Discord/Telegram/Webchat) nhưng assistant trả response rỗng
- Stop reason = "error", content = []
- Error 400 từ Anthropic API với message:
  "messages.X.content.Y: `thinking` or `redacted_thinking` blocks in the
   latest assistant message cannot be modified. These blocks must remain