#rushstack

Copilot-guided migration from SPFx 1.21 (gulp) to 1.22 (Heft): detect customizations, verify Node, update toolchain, and audit permissions.

Heft task to lint SCSS/CSS with Stylelint; optionally auto-fix via --fix and run before builds.

Same approach as the original post, plus a quick demo of responsive, resized images using Astro assets.

Use Heft to keep the SharePoint package solution version in sync with package.json in SPFx 1.22.