Decompose a use case into ordered, independently-executable slices. Owns the slice file format — one Markdown file per slice, holding the contract surface and the test plan as language-tagged snippets and nested bullets. Referenced by /m:plan (default and cover modes) to emit the per-slice files the build consumes.
Engineering principles that bind any code Molcajete plans, builds, or reviews — integration tests as the trust contract, hexagonal default, dependency injection, 80% coverage floor, universal software craft (small functions, clear boundaries, no god files, refactor to reuse), technology-agnostic. Loaded by /m:plan and /m:build. Mirrored to the host project at `.claude/rules/principles.md` by /m:setup.
Technology-agnostic rules for the test-first build loop. Implementer and Validator role contracts, outer-edge mocking, reading specs/TECH-STACK.md, Runner Inference, coverage gate scoped to touched files, reactive refactor.
Rules and templates for the /m:setup command. One-shot foundation setup from a single project description plus codebase detection. Generates PROJECT.md, TECH-STACK.md, ACTORS.md, GLOSSARY.md, MODULES.md, DOMAINS.md, FEATURES.md, and .molcajete/settings.json.
Conventions for generating README.md files as LLM-optimized navigation documents. Covers YAML frontmatter, file tables, subdirectory tables, Mermaid diagrams, and stack-specific variants (backend, frontend, config). Used by /m:doc and the documentation task in build plans.
Status as first-class state on slices, use cases, and features. Defines the three-value enum (pending | dirty | implemented), per-level semantics, the bottom-up roll-up rule, and which command writes which level's status. Status lives on the artifact's frontmatter and is the source of truth — the CHANGELOG is for context and markers, not state.
Per-UC change log mechanics. Defines the CHANGELOG.md sidecar file path, TODO/DONE section layout, entry line format, and entry-status transitions (pending → dirty → implemented). Referenced by /m:spec, /m:fix, /m:change, /m:cover, /m:plan, and /m:build. The changelog is a context log + marker file; it is NOT the source of truth for artifact status (see status-rollup).
Schema, section definitions, and population rules for ARCHITECTURE.md — the feature-level artifact that maps specs to code. Referenced by feature-authoring (scaffold creation) and reverse-engineering (code-driven population).