♻️ 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

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✅ Ready for Easypanel deployment (no root dir needed)

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

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

@@ -1,22 +0,0 @@
-Prism.languages.ada = {
-	'comment': /--.*/,
-	'string': /"(?:""|[^"\r\f\n])*"/,
-	'number': [
-		{
-			pattern: /\b\d(?:_?\d)*#[\dA-F](?:_?[\dA-F])*(?:\.[\dA-F](?:_?[\dA-F])*)?#(?:E[+-]?\d(?:_?\d)*)?/i
-		},
-		{
-			pattern: /\b\d(?:_?\d)*(?:\.\d(?:_?\d)*)?(?:E[+-]?\d(?:_?\d)*)?\b/i
-		}
-	],
-	'attribute': {
-		pattern: /\b'\w+/,
-		alias: 'attr-name'
-	},
-	'keyword': /\b(?:abort|abs|abstract|accept|access|aliased|all|and|array|at|begin|body|case|constant|declare|delay|delta|digits|do|else|elsif|end|entry|exception|exit|for|function|generic|goto|if|in|interface|is|limited|loop|mod|new|not|null|of|or|others|out|overriding|package|pragma|private|procedure|protected|raise|range|record|rem|renames|requeue|return|reverse|select|separate|some|subtype|synchronized|tagged|task|terminate|then|type|until|use|when|while|with|xor)\b/i,
-	'boolean': /\b(?:false|true)\b/i,
-	'operator': /<[=>]?|>=?|=>?|:=|\/=?|\*\*?|[&+-]/,
-	'punctuation': /\.\.?|[,;():]/,
-	'char': /'.'/,
-	'variable': /\b[a-z](?:\w)*\b/i
-};