Route copied StructId skill files to .agents/skills

[Copilot]

The package was copying SKILL.md into .github/skills, which does not match the expected skill root for consuming repositories. This updates the packaged MSBuild target to place the file under .agents/skills instead.

• Copy target path

  • Changed CopyStructIdSkill to emit SKILL.md to .agents/skills/structid/SKILL.md
  • Preserved the existing repo root detection and opt-out behavior

• Target documentation

  • Updated the inline target comment so the documented destination matches the actual copy path

<Copy SourceFiles="$(MSBuildThisFileDirectory)..\skills\structid\SKILL.md"
      DestinationFiles="$(_StructIdSkillRepoRoot).agents\skills\structid\SKILL.md"
      SkipUnchangedFiles="true"
      Condition="'$(_StructIdSkillRepoRoot)' != '' and Exists('$(MSBuildThisFileDirectory)..\skills\structid\SKILL.md')"
      ContinueOnError="true" />

[kzu]

🧪 Details on macOS Unix 15.7.4

🧪 Details on Ubuntu 24.04.4 LTS

🧪 Details on Microsoft Windows 10.0.26100

from retest v1.1.0 on .NET 10.0.7 with 💜 by @devlooped