d7a56474fc
Ports the pr-lens agent skill: represent a diff or subsystem as one graph.json document and render it as animated SVG diagrams via the MIT npx CLI (@coldtea/pr-lens-cli), with optional opt-in publishing to a shareable canvas link. Why: PR review and architecture explanation keep producing hand-drawn Mermaid; this gives validated, animated, drill-down diagrams with a deterministic document format. Upstream created Aug 20, 1.1k stars in 3 weeks, GitHub App + Action + CLI + skill. - optional-skills/software-development/pr-lens/: SKILL.md (145 lines), references/ (config, graph document format, valid example) vendored near-verbatim, LICENSE.txt (MIT, Coldtea AI) - gh --attach caveat handled: installed gh 2.97 lacks the flag; skill documents honest fallbacks (gist, canvas link, local path) - Live smoke: validate + render of the vendored example graph passed (4 SVGs + manifest produced) - docs: own catalog row + generated page + sidebar entry only