Add Skill to Claude Code settings permission rule pattern

[amothic]

Summary

Add Skill to the list of valid tools in the permissionRule pattern for Claude Code settings schema.

Details

The Claude Code documentation lists Skill as one of the available tools that requires permission:

Tool	Description	Permission Required
Skill	Executes a skill within the main conversation	Yes

Users can configure Skill permissions like:

{
  "permissions": {
    "allow": [
      "Skill(*)"
    ]
  }
}

However, the current schema's permissionRule pattern does not include Skill, causing validation warnings when users add Skill-related permission rules.

This PR adds Skill to the pattern to match the documented tool list.

Reference

• Claude Code Settings Documentation: https://code.claude.com/docs/en/settings

[github-actions]

Thanks for the PR!

This section of the codebase is owned by @domdomegg and @bogini - if they write a comment saying "LGTM" then it will be merged.

[domdomegg]

Thanks, LGTM!

[domdomegg]

LGTM

[github-actions]

Merging because @domdomegg is a code-owner of all the changes - thanks!