Visualize Plan

Transform an existing plan into a faithful, polished HTML explanation. Do not review, rewrite, execute, or expand the plan into new requirements.

Step 1: Resolve the plan

Resolve the plan source in this order:

1. If the input names a readable file, use that file. Treat the full input as one path after removing optional surrounding quotes or a leading @.
2. If the input is empty, derive the session file (PI_SESSION_FILE, or in Claude Code $HOME/.claude/projects/<project slug>/$CLAUDE_CODE_SESSION_ID.jsonl with / and . in the project path mapped to -) and use ${SESSION_FILE%.jsonl}.plan.md when it exists.
3. If the input contains substantial inline plan content, use it directly.
4. Otherwise, stop and ask for a plan file path or pasted plan.

For path-like input that does not exist, report the missing path; do not reinterpret it as plan text. Read the complete plan before generating anything.