feat(commit-push-pr): include plan/prompt context in PR body

[m-abboud]

Summary

• Adds a Plan/prompt context section to the /commit-push-pr command that automatically reads the task's plan or original prompt and injects it into the PR body
• Plan file is resolved in priority order: explicit argument → PLAN.md → .plan.md → most recently modified file in ~/.claude/plans/
• Updates README to document the new argument-hint and the plan-file lookup behaviour

Motivation

When Claude completes a task and opens a PR, reviewers currently only see a diff-based summary with no record of why the work was done or what the original requirements were. Including the plan/prompt context directly in the PR body gives reviewers and future readers full context without having to dig through a separate chat history or planning document.

How it works

The new context line in the command:

- Plan/prompt context: !`cat "$ARGUMENTS" 2>/dev/null || cat PLAN.md 2>/dev/null || cat .plan.md 2>/dev/null || ls -t ~/.claude/plans/*.md 2>/dev/null | head -1 | xargs cat 2>/dev/null || echo ""`

resolves to the first non-empty result from:

1. The file passed as an argument to the command (e.g. /commit-push-pr PLAN.md)
2. PLAN.md in the current working directory
3. .plan.md in the current working directory
4. The most recently modified Markdown file in ~/.claude/plans/ (written during Claude's plan mode)

If no plan file is found the field is empty and the PR body is generated from the diff as before.

Test plan

• Run /commit-push-pr with no argument in a repo that has a PLAN.md — verify plan content appears under ## Context in the PR body
• Run /commit-push-pr path/to/custom-plan.md — verify the specified file is used
• Run /commit-push-pr with no plan file present — verify PR is still created normally without a ## Context section
• Confirm .plan.md fallback works when PLAN.md does not exist
• Confirm ~/.claude/plans/ fallback is used when no local plan file exists

🤖 Generated with Claude Code

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