update-pr-summary

# Update PR Summary Update a PR title and description based on the complete changeset. When explicitly invoked with extra text, treat that text as the PR number or URL. ## Process 1. **Fetch PR info** - Use `gh pr view <pr> --json title,body,baseRefName,headRefName`. 2. **Analyze the complete changeset** - Use `git diff <base-branch>...HEAD` to review all committed changes in the branch. - Ignore unstaged changes. - Make the summary describe the full branch diff, not just the latest commit. 3. **Generate the updated summary** - Follow the `create-pr` skill format for title and body. - Start the title with a capital letter and a verb, with no `fix:` or `feat:` prefix. - Use plain language. Avoid jargon and internal shorthand unless an exact command or tool name is needed. - Keep the body to a single short section. - Include 1-2 sentences, a few bullets, and one usage snippet or before/after example when helpful. - Do not include test plans, changed file lists, or line-number links. 4. **Apply the update** - Use `gh pr edit <pr> --title "..." --body "..."`.