Analyze the following GitHub issue and produce an implementation plan.

## Issue #{number}: {title}

{body}

## Instructions

Produce an implementation plan for the issue above:
- Files to create or modify
- Order of changes
- Existing patterns to follow
- Tests needed (unit and integration)
- Risks or open questions

When your plan is complete, use the Write tool to save the full plan to this exact path:

  {plan_file}

This file is the ONLY artifact captured from this session and will be posted to the GitHub issue for human review.

Do NOT make code changes. Analysis only.
