What problem does it solve? Large tickets that span multiple layers and repos are hard to parallelize safely. This Skill decomposes a slice-ready specification into independent, vertically complete work-units so each slice can be built and verified on its own testing seam without stepping on the others. ## Core Features & Use Cases - Vertical slice decomposition: Turns behaviors from a spec into thin, complete slices that cross every layer of the repo's chain, rejecting single-layer slices that prove nothing. - Dependency DAG and wave board: Renders a slice-board.md with parallel waves, a Mermaid dependency graph, and per-slice cards showing lanes, repos, and verify seams. - Deferral-aware lanes: Classifies slices as READY, DEFERRED REGION (with fail-loud stubs), or PARKED based on open questions priced by the grilling gate, so unresolved decisions never silently corrupt the plan. - Use Case: During a /start-ticket decompose run, after /to-spec writes slice-spec.md, run this Skill to produce slice work-unit files and an approval board, then approve it so the orchestrator dispatches slices into worktrees. ## Quick Start Run the to-tickets skill on the current ticket after /to-spec has produced slice-spec.md, then review and approve the generated slice board.
