/new-milestone

name: gsd:new-milestone
description: Start a new milestone cycle — update PROJECT.md and route to requirements
argument-hint: "[milestone name, e.g., 'v1.1 Notifications'] [--ws <name>] [--reset-phase-numbers]"
allowed-tools:
  - Read
  - Write
  - Bash
  - Agent
  - AskUserQuestion
requires: [new-project, phase, plan-phase]

<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 milestone

**After:** `/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>