draft-prompt-plan

Decompose a specification file into context-sized shell plans. Each shell captures the wiring invariants (Produces, Consumes, Covers) and high-level Implementation Steps without committing to file paths. Use when the user asks to "draft a prompt plan", "create a prompt plan", "break spec into prompts", "decompose spec into sessions", "plan prompts for spec", "generate prompts from spec", or "make prompts from spec".