Migrate to Tailwind 4 + Editor Upgrade (#8465)

* wip

* fix: roadmap editor

* fix: padding

* wip

* fix: remove editor package

* wip

* fix: update pnpm lock

* Add contribution docs

* UI changes for TW4

* Update deployment workflow

---------

Co-authored-by: Arik Chakma <arikchangma@gmail.com>

src/components/Questions/QuestionGuide.astro

@@ -59,7 +59,7 @@ const { frontmatter: guideFrontmatter, author } = questionGroup;
 <article class='lg:grid lg:max-w-full lg:grid-cols-[1fr_minmax(0,700px)_1fr]'>
   {
     showTableOfContent && (
-      <div class='bg-gradient-to-r from-gray-50 py-0 lg:col-start-3 lg:col-end-4 lg:row-start-1'>
+      <div class='bg-linear-to-r from-gray-50 py-0 lg:col-start-3 lg:col-end-4 lg:row-start-1'>
         <RelatedGuides
           relatedTitle={guideFrontmatter?.relatedTitle}
           relatedGuides={questionGroup?.relatedGuides || {}}