ReMoM

Vet a third-party dependency before recommending, installing, or adding it. Use whenever a new external binary, library, package, or tool is proposed - including anything installed via winget/choco/vcpkg/FetchContent, any DLL committed to the repo, and any tool suggested to the user. Also use when the user challenges a dependency's pedigree, provenance, trustworthiness, or supply-chain risk.

Turn a PRD into a multi-phase implementation plan using tracer-bullet vertical slices, saved as a local Markdown file in doc/#AI_Plans/. Use when user wants to break down a PRD, create an implementation plan, plan phases from a PRD, or mentions "tracer bullets".

Safely terminate stuck test executables that block rebuilds or CTest runs on Windows. Use when a test binary is locked or still running, or when the user says a test executable is stuck, hung, blocking the linker, or needs to be killed. Read the executable list from the generated CTest config and always ask the user for permission before use.