♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prismjs/components/prism-hoon.js

@@ -1,14 +0,0 @@
-Prism.languages.hoon = {
-	'comment': {
-		pattern: /::.*/,
-		greedy: true
-	},
-	'string': {
-		pattern: /"(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*'/,
-		greedy: true
-	},
-	'constant': /%(?:\.[ny]|[\w-]+)/,
-	'class-name': /@(?:[a-z0-9-]*[a-z0-9])?|\*/i,
-	'function': /(?:\+[-+] {2})?(?:[a-z](?:[a-z0-9-]*[a-z0-9])?)/,
-	'keyword': /\.[\^\+\*=\?]|![><:\.=\?!]|=[>|:,\.\-\^<+;/~\*\?]|\?[>|:\.\-\^<\+&~=@!]|\|[\$_%:\.\-\^~\*=@\?]|\+[|\$\+\*]|:[_\-\^\+~\*]|%[_:\.\-\^\+~\*=]|\^[|:\.\-\+&~\*=\?]|\$[|_%:<>\-\^&~@=\?]|;[:<\+;\/~\*=]|~[>|\$_%<\+\/&=\?!]|--|==/
-};