Produce an implementation plan at .turbo/plans/<slug>.md. Use when the user asks to "draft a plan", "draft the plan", "write an implementation plan", "plan this change", "create an implementation plan", or needs a first-draft plan file before refinement.
Decompose a specification file into shells with YAML frontmatter. 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 shells", "create shells", "break spec into shells", "decompose spec into sessions", "draft shells from spec", "generate shells from spec", or "make shells from spec".
Expand a shell into a full implementation plan. Verifies Consumes against the current codebase, runs a fresh pattern survey, escalates open questions, and fills in concrete file references and verification. Use when the user asks to "expand a shell", "expand shell", "fill in the shell", "expand the shell", or "concretize the shell".
Pick the next shell whose dependencies are satisfied and carry it through planning: expand, refine, self-improve, halt. Use when the user asks to "pick next shell", "next shell", "continue project", "what's next", "next implementation step", or "continue with the plan".
Analyze task complexity and route to a mode by artifact: direct fix for clear-scope changes, plan file when the approach needs to be written down, or spec and shells for multi-session projects. Use when the user asks to "turboplan", "run turboplan", "plan this task", "turbo plan mode", "plan and implement", or "use turboplan instead of plan mode".
Produce an implementation plan at .turbo/plans/<slug>.md. Use when the user asks to "draft a plan", "draft the plan", "write an implementation plan", "plan this change", "create an implementation plan", or needs a first-draft plan file before refinement.
Decompose a specification file into shells with YAML frontmatter. 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 shells", "create shells", "break spec into shells", "decompose spec into sessions", "draft shells from spec", "generate shells from spec", or "make shells from spec".
Expand a shell into a full implementation plan. Verifies Consumes against the current codebase, runs a fresh pattern survey, escalates open questions, and fills in concrete file references and verification. Use when the user asks to "expand a shell", "expand shell", "fill in the shell", "expand the shell", or "concretize the shell".