Output when I run 'package_skill.py':
"Packaging skill: .
Validating skill...
[ERROR] Validation failed: Unexpected key(s) in SKILL.md frontmatter: user-invocable. Allowed properties are: allowed-tools, description, license, metadata, name
Please fix the validation errors before packaging."
My SKILL.MD frontmatter:
"---
name: interpret
description: |
...
user-invocable: true
---"
Version: OpenClaw 2026.3.22 (4dcc39c)