Gsd New Milestone

---
name: gsd-new-milestone
description: "Start a new milestone cycle — update PROJECT.md and route to requirements"
---

<cursor_skill_adapter>
## A. Skill Invocation
- This skill is invoked when the user mentions `gsd-new-milestone` or describes a task matching this skill.
- Treat all user text after the skill mention as `{{GSD_ARGS}}`.
- If no arguments are present, treat `{{GSD_ARGS}}` as empty.

## B. User Prompting
When the workflow needs user input, prompt the user conversationally:
- Present options as a numbered list in your response text
- Ask the user to reply with their choice
- For multi-select, ask for comma-separated numbers

## C. Tool Usage
Use these Cursor tools when executing GSD workflows:
- `Shell` for running commands (terminal operations)
- `StrReplace` for editing existing files
- `Read`, `Write`, `Glob`, `Grep`, `Task`, `WebSearch`, `WebFetch`, `TodoWrite` as needed

## D. Subagent Spawning
When the workflow needs to spawn a subagent:
- Use `Task(subagent_type="generalPurpose", ...)`
- The `model` parameter maps to Cursor's model options (e.g., "fast")
</cursor_skill_adapter>

<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>
@./.cursor/gsd-core/workflows/new-milestone.md
@./.cursor/gsd-core/references/questioning.md
@./.cursor/gsd-core/references/ui-brand.md
@./.cursor/gsd-core/templates/project.md
@./.cursor/gsd-core/templates/requirements.md
</execution_context>

<context>
Milestone name: {{GSD_ARGS}} (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>