Generate version-aligned MDev.Dotnet agent skill in CI

[Copilot]

MDev.Dotnet needs current, reusable guidance for coding agents without duplicating package documentation. CI must detect drift and publish a version-aligned skill.

Changes

• Generation

  • Adds deterministic SKILL.md generation from authoritative docs/ sources.
  • Covers all supported packages, configuration, security, identity, IaC, observability, deployment, and troubleshooting.

• Validation

  • Checks package coverage, headings, links, code fences, unresolved placeholders, and credential-like content.
  • Fails CI when committed output differs from regenerated content.

• Distribution

  • Publishes mdev-dotnet-skill-<version> as a CI artifact.
  • Keeps SKILL.md available at a stable repository path.

• Contributor workflow

  • Documents how package and configuration changes flow into the generated skill.

pwsh scripts/Generate-Skill.ps1
pwsh scripts/Generate-Skill.ps1 -Check

• Fixes Generate a GitHub Copilot SKILL.md in CI for agent-assisted MDev usage #79