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Get Started Free →Start a new milestone cycle — update PROJECT.md and route to requirements
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-13 | ✗→✓ | ▲ Improved | -30% | 0% |
| case-09 | ✗→✓ | ▲ Improved | -36% | 0% |
| case-10 | ✗→✓ | ▲ Improved | -23% | 0% |
| case-11 | ✗→✓ | ▲ Improved | -38% | 0% |
| case-12 | ✗→✓ | ▲ Improved | -14% | 0% |
<objective> Start a new milestone: questioning → research (optional) → requirements → roadmap.
Brownfield equivalent of new-project. Project exists, PROJECT.md has history. Gathers "what's next", updates PROJECT.md, then runs requirements → roadmap cycle.
Creates/Updates:
.planning/PROJECT.md — updated with new milestone goals.planning/research/ — domain research (optional, NEW features only).planning/REQUIREMENTS.md — scoped requirements for this milestone.planning/ROADMAP.md — phase structure (continues numbering).planning/STATE.md — reset for new milestoneAfter: /gsd-plan-phase [N] to start execution. </objective>
<execution_context> @~/.claude/gsd-core/workflows/new-milestone.md @~/.claude/gsd-core/references/questioning.md @~/.claude/gsd-core/references/ui-brand.md @~/.claude/gsd-core/templates/project.md @~/.claude/gsd-core/templates/requirements.md </execution_context>
<context> Milestone name: $ARGUMENTS (optional - will prompt if not provided)
Project and milestone context files are resolved inside the workflow (init new-milestone) and delegated via <files_to_read> blocks where subagents are used. </context>
<process> Execute end-to-end. Preserve all workflow gates (validation, questioning, research, requirements, roadmap approval, commits). </process>
Other measured skills in the registry, with their headline benchmark lift.