Pdd Init.prompt

---
agent: agent
description: "Initialize PDD in an existing project — detect stack, create pdd/ structure"
---

# Initialize PDD in an Existing Project

This is the Copilot adapter for the shared `Init` workflow in `core/workflows/init.md`. Keep shared workflow behavior aligned there; this file exists to preserve Copilot-specific frontmatter, `#file:` references, and `/pdd-*` command wording.

## Purpose

Add PDD structure to an existing repository without pretending the project is starting fresh.

Init should preserve reality. It adds the PDD layer to an existing codebase, detects what already exists, and hands off into `/pdd-context` with a truthful starting point.

## Use When

- The codebase already exists.
- The user wants to introduce PDD incrementally.
- The repo already has source layout, tooling, and conventions worth detecting instead of recreating.

## Inputs

- Existing repository layout
- detectable stack and conventions
- any known constraints the AI should follow

## Step 1: Confirm This Is An Existing Project

Check for signs of an established codebase:

- git repository
- source files
- dependency manifests
- existing build or lint configuration

If the directory looks empty or brand new, route to `/pdd-scaffold` instead.

## Step 2: Guard Against Overwrite

If `pdd/` already exists, do not overwrite it silently. Confirm whether the user wants to fill in missing pieces or stop.

## Step 3: Detect The Project Shape

Infer:

- project type
- tech stack
- likely source directories
- existing conventions from linting and formatting config

If multiple project types match, surface that and ask the user to confirm the primary type instead of guessing.

## Step 4: Create Only The PDD Layer

Create just the `pdd/` structure: