技能更新管理器

管理已安装技能的注册、版本跟踪与自动更新检查；当用户安装新技能、检查技能更新或配置更新策略时使用。

What to consider before installing: - Review the included script (scripts/skill_registry.py) yourself before allowing the agent to run it. It performs file writes (skills_registry.json and a MEMORY.md at a path relative to the skill), network requests to GitHub/ClawHub, and may trigger git clone/downloads. - BACKUP your workspace/MEMORY.md before first use. The script claims to 'append' but uses 'w' and may overwrite that file; confirm the MEMORY_FILE path matches where you want configuration written. - Confirm where skills_registry.json will be stored (it's under the skill package parent directory) and whether that location is acceptable. - If you allow automatic update checks, be aware the agent will contact GitHub and fetch repositories (possible supply of arbitrary code). Only enable this for trusted skills and consider running updates in a sandboxed environment. - If you want safer behavior, modify the script to: (1) use a configurable MEMORY path (avoid hard-coded multi-parent traversal), (2) open MEMORY.md with append mode or perform a careful merge instead of blind 'w', and (3) avoid auto-generating GitHub URLs without user confirmation. Overall: functionally coherent for an update manager, but implementation bugs and file-write behavior make it suspicious until reviewed and adjusted to match the environment and your safety expectations.