What problem does it solve? It guides engineers changing, testing, reviewing, or documenting the Auctra CLI-first text creation product runtime under cli/auctra, enforcing product boundaries, human review invariants, and evidence integrity so changes do not break contracts. ## Core Features & Use Cases - Runtime Boundary Enforcement: Defines module ownership across internal/cli, internal/app, internal/content, internal/corpus, internal/review, internal/runtime, and internal/store, plus closed provider IDs (pi, omp, cohors, fixture). - Review-First Text Engine: Ensures generation only creates pending review items, with accepted versions produced solely through review accept or review partial across novels, Xiaohongshu notes, WeChat articles, and screenplay scenes. - Screenplay Corpus Intelligence & Scaena Handoff: Governs additive corpus overlays, holdout isolation, and the accepted-only auctra.production_handoff.v1 export contract with fail-closed readiness checks. - Use Case: When adding a new CLI command or changing run evidence output, follow this Skill to keep --json envelopes stable, redaction enabled, and run the required go test and openspec validate commands. ## Quick Start Ask the agent to modify or review a command in cli/auctra while preserving CLI ownership, human review, and evidence redaction, then run the specified Go tests and OpenSpec validation.