soul-self-evolution

对 SOUL.md 或 docs/reference/SOUL.md 进行受控更新：

• 只允许改动可演进段
• 记录 checkpoint
• 支持一键回滚

调用

python3 skills/soul-self-evolution/run.py apply --path docs/reference/SOUL.md --changes '[{"section":"## Collaboration Preferences","content":"- Keep updates concise."}]'
python3 skills/soul-self-evolution/run.py list_checkpoints