Add release skill for Claude Code

[szegedi]

Summary

• Adds a Claude Code skill (/release <version>) that automates the v5.x release proposal workflow
• Covers: worktree creation, branch-diff to identify commits, cherry-picking, version bump, and PR creation with categorized changelog

Test plan

• Invoke /release <version> in Claude Code and verify it walks through the workflow correctly

🤖 Generated with Claude Code

[github-actions]

Overall package size

Self size: 2.01 MB
Deduped: 2.37 MB
No deduping: 2.37 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | source-map | 0.7.6 | 185.63 kB | 185.63 kB | | pprof-format | 2.2.1 | 163.06 kB | 163.06 kB | | node-gyp-build | 3.9.0 | 8.81 kB | 8.81 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-03-27 12:55:25

Comparing candidate commit 263e717 in PR branch add-release-skill with baseline commit 203a976 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 90 metrics, 30 unstable metrics.