Astro PR Writer Write Astro pull request descriptions that help reviewers quickly understand intent, behavior changes, and validation. Use this skill whenever the user asks for any PR-writing task, including: - create/open a pull request - create/open a draft pull request - update a PR title - update a PR body/description - write PR notes/summary Core Principle Describe the change , how it works , and why it matters . - explains what the fix/feature does. - lists what test code was added or changed. - explains whether user-facing docs changes are needed. Do not use PR sections as a task log.…