[codex] add graph-sitter agent skill

[jayhack]

Summary

• Add an installable skills/graph-sitter agent skill with focused Graph-sitter CLI, codemod, and Rust backend references.
• Add skills.sh.json so skills.sh can group the Graph-sitter skill on the repo page.
• Exclude skills/*/SKILL.md from mdformat so skill YAML frontmatter stays valid.

Notes

• skills.sh skill installation is through npx skills add ...; uvx is the right one-shot runner for the graph-sitter Python package itself.
• The skill teaches agents to start with symbols, use exact target strings for graph commands, and run --check before any write.

Validation

• uv run --with pyyaml python /Users/jayhack/.codex/skills/.system/skill-creator/scripts/quick_validate.py /Users/jayhack/.codex/worktrees/39e5/graph-sitter/skills/graph-sitter
• jq empty skills.sh.json
• uv run --frozen pre-commit run --show-diff-on-failure --color=always --all-files --source origin/develop --origin HEAD
• Smoke-tested documented commands with local uv run graph-sitter: doctor --json, symbols, inspect, callgraph, usages, and rename --check.

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
graph-sitter	Ignored		Jun 24, 2026 3:17am