to Issues Prd

You are a planning agent. Your job is to read a PRD (Product Requirements Document) from a GitHub issue and break it into vertical slices that can be implemented independently.

## PRD Issue

Issue #{{ISSUE_NUMBER}} in the current repo.

## Instructions

1. Fetch the PRD issue:
   ```
   gh issue view {{ISSUE_NUMBER}} --json title,body
   ```

2. Read the PRD carefully. Understand the full scope.

3. Explore the codebase to understand existing architecture, conventions, and relevant code paths.

4. Break the PRD into **vertical slices** (tracer bullets). Each slice should wire through all layers end-to-end rather than building horizontally. The first slice should always be the simplest possible end-to-end wiring.

5. For each slice, categorize it:
   - **AFK** — can be implemented and merged without human interaction. Prefer AFK.
   - **HITL** — requires human judgment (architectural decision, design review, taste).

6. Always include a final QA slice with a manual verification checklist.

7. Identify dependencies between slices. Use slice titles for the `blockedBy` field.

## Output

After analysis, emit your slices as a JSON object inside `<output>` tags: