What problem does it solve? Contributors to the mflux repository need a canonical, repeatable way to set up their local environment and run lint, format, build, test, and type-check commands without guessing which tools or flags the project expects. ## Core Features & Use Cases - Environment Setup Guidance: Documents the macOS arm64 expectation, the uv package manager preference, and the just (≥ 1.50) prerequisite for running project recipes. - Canonical Command Reference: Maps common tasks to justfile recipes such as just install, just lint, just format, just check, just build, and just typecheck. - Type Checker Migration Baseline: Explains the astral ty type checker setup, the pinned version, and the planned burn-down strategy for re-enabling ignored rules from the mypy-to-ty migration. - Use Case: A new contributor clones the mflux repo and asks how to run the pre-commit checks; the Skill directs them to just check and explains that tests must keep MFLUX_PRESERVE_TEST_OUTPUT=1 enabled. ## Quick Start Ask the AI to set up the mflux repository locally and run the lint, format, and type-check commands using the project's justfile recipes.