Add a required "Model Used" section to the PR template so contributors
document which AI model (with version, context window, reasoning mode,
and other capability details) was used for each change. Also adds a
corresponding checklist item.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Address Greptile feedback — the sparse 3-line placeholder could
lead to shallow thinking paths. Expanded to 6 lines with guiding
brackets and added "Aim for 5–8 steps" hint in the comment.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>