♻️ 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-gap.js

@@ -1,54 +0,0 @@
-// https://www.gap-system.org/Manuals/doc/ref/chap4.html
-// https://www.gap-system.org/Manuals/doc/ref/chap27.html
-
-Prism.languages.gap = {
-	'shell': {
-		pattern: /^gap>[\s\S]*?(?=^gap>|$(?![\s\S]))/m,
-		greedy: true,
-		inside: {
-			'gap': {
-				pattern: /^(gap>).+(?:(?:\r(?:\n|(?!\n))|\n)>.*)*/,
-				lookbehind: true,
-				inside: null // see below
-			},
-			'punctuation': /^gap>/
-		}
-	},
-
-	'comment': {
-		pattern: /#.*/,
-		greedy: true
-	},
-	'string': {
-		pattern: /(^|[^\\'"])(?:'(?:[^\r\n\\']|\\.){1,10}'|"(?:[^\r\n\\"]|\\.)*"(?!")|"""[\s\S]*?""")/,
-		lookbehind: true,
-		greedy: true,
-		inside: {
-			'continuation': {
-				pattern: /([\r\n])>/,
-				lookbehind: true,
-				alias: 'punctuation'
-			}
-		}
-	},
-
-	'keyword': /\b(?:Assert|Info|IsBound|QUIT|TryNextMethod|Unbind|and|atomic|break|continue|do|elif|else|end|fi|for|function|if|in|local|mod|not|od|or|quit|readonly|readwrite|rec|repeat|return|then|until|while)\b/,
-	'boolean': /\b(?:false|true)\b/,
-
-	'function': /\b[a-z_]\w*(?=\s*\()/i,
-
-	'number': {
-		pattern: /(^|[^\w.]|\.\.)(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+)?(?:_[a-z]?)?(?=$|[^\w.]|\.\.)/,
-		lookbehind: true
-	},
-
-	'continuation': {
-		pattern: /([\r\n])>/,
-		lookbehind: true,
-		alias: 'punctuation'
-	},
-	'operator': /->|[-+*/^~=!]|<>|[<>]=?|:=|\.\./,
-	'punctuation': /[()[\]{},;.:]/
-};
-
-Prism.languages.gap.shell.inside.gap.inside = Prism.languages.gap;