Dsh Github Integration

Key features

• Declared scopesGitHub read and write
• A static github-issue-pr Skill for planning and running auditable GitHub Issue and Pull Request campaigns.
• The gate validates metadata, frontmatter, contained links, high-risk command patterns, package contents, and public-release hygiene without running instructions from the Skill.
• a passing static review remains Catalog-only
• GitHub authentication and tool permissions are supplied by the user's chosen provider.