v0.7.0 - Trusted Publishing + CI

What's New

• Trusted Publisher workflow - npm releases are now published automatically via GitHub Releases using OIDC (no long-lived tokens)
• CI badge in README
• Node.js 20+ requirement - bumped from 18 to match CI matrix and vitest compatibility
• Doc fixes - corrected stale tool counts in CLAUDE.md, version refs in README, dot notation in CONTRIBUTING.md

Changes since v0.6.0

• ci: add npm trusted publisher workflow (publish.yml)
• ci: add GitHub Actions CI for build + test on Node 20/22
• docs: bump Node.js requirement to 20
• docs: add CI status badge
• fix: update stale tool counts, version refs, and dot notation in docs
• fix: update package description to 25 tools