Interpret lenslab analyse JSON, relay only CLI-prescribed capture fixes, and keep the Rust CLI as the only measurement engine. Use when a user wants to assess a lens copy from DNG/TIFF captures, understand copy_assessment support, or get reshoot guidance.
Interpret lenslab analyse JSON and coach lens-copy capture reshoots using the shared lenslab skill core.
Use before opening, updating, or merging a lenslab PR, especially after decode, core, dependency, binary-size, roadmap, or CLI-output changes. Checks roadmap freshness, crate boundaries, release-size impact, and PR verification evidence.
Use after a larger piece of work or specialised targeted bugfix, before merge, to decide what should be compounded as a repo-local skill, a docs/solutions institutional learning, a rule update, or nothing. Start by showing candidates, then produce only the artefacts that earn their place.
Use when checking whether GitHub Actions CI has run or passed on a pull request via the GitHub MCP tools (`mcp__github__pull_request_read`) — before claiming CI is green, red, or hasn't run yet.
Use when a rustup toolchain install is broken — `cargo`/`rustc` missing or failing to load (e.g. `librustc_driver-*` dylib/so not found), or `rustup toolchain install` reports "toolchain is already up to date" yet rustc errors. Repairs an interrupted toolchain install (common after a setup-script or container interruption).