jnuyens/gsd:new-ddd

<runtime_note> Copilot (VS Code): Use vscode_askquestions wherever this workflow calls AskUserQuestion. They are equivalent, vscode_askquestions is the VS Code Copilot implementation of the same interactive question API. </runtime_note>

<context> **Documentation-Driven Development (DDD) mode for project initialization.** Differs from `/gsd:new-project`:

1. Users validate SPEC.md (user-facing docs: README, USAGE, CONCEPTS, API surface) rather than REQUIREMENTS.md (REQ-IDs + acceptance criteria).
2. Phases derive from SPEC.md sections / chapters rather than REQ-ID clusters.
3. Each phase's success criterion is "implementation matches the corresponding SPEC.md section" rather than "tests pass and UAT satisfied."

When to use DDD vs. standard new-project:

• CLIs (the help text IS the spec)
• Libraries / SDKs (README + API reference is the contract)
• APIs (OpenAPI-style docs-as-spec)
• Plugin / extension systems (extension API surface = docs)
• Any project where the user-facing surface is the deliverable

When to skip DDD and use standard new-project:

• Exploratory research where the system shape is unknown
• Pure refactors or performance optimization
• Backend services with no human-readable interface

Flags:

• --auto, Automatic mode. After config questions, runs research → docs → roadmap without further interaction. Expects idea document via @ reference. </context>

<objective> Initialize a new project through Documentation-Driven Development:

1. Questioning (deep context gathering, same as new-project)
2. Research (parallel, same as new-project)
3. SPEC.md drafting (NEW, writes user-facing documentation as the spec)
4. User validation of SPEC.md (NEW, read-through and approve before any phase work)
5. Roadmap generation (phases derived from SPEC.md sections)
6. STATE.md initialization

Creates:

• .planning/PROJECT.md, project context
• .planning/config.json, workflow preferences (mode: ddd set)
• .planning/research/, domain research (optional)
• docs/SPEC.md, user-facing documentation as the spec
• .planning/REQUIREMENTS.md, thin traceability shell, each entry pointing at a SPEC.md section
• .planning/ROADMAP.md, phase structure derived from SPEC.md sections
• .planning/STATE.md, project memory (with mode: ddd marker)

After this command: Run /gsd:plan-phase 1 to start execution. Per-phase work proceeds as standard GSD; SPEC.md is the spec each phase implements against. Manual doc updates during execution are expected; per-phase doc-sync automation is held for a future release. </objective>

<execution_context> @${CLAUDE_PLUGIN_ROOT}/workflows/new-ddd.md @${CLAUDE_PLUGIN_ROOT}/workflows/new-project.md @${CLAUDE_PLUGIN_ROOT}/references/questioning.md @${CLAUDE_PLUGIN_ROOT}/references/ui-brand.md @${CLAUDE_PLUGIN_ROOT}/templates/project.md </execution_context>

<process> Execute the new-ddd workflow from @${CLAUDE_PLUGIN_ROOT}/workflows/new-ddd.md end-to-end. Where the workflow says "as in new-project step N", follow the matching step from @${CLAUDE_PLUGIN_ROOT}/workflows/new-project.md to avoid duplicated logic. Preserve all workflow gates (validation, approvals, commits, routing). </process>