♻️ 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
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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-nasm.js

@@ -1,24 +0,0 @@
-Prism.languages.nasm = {
-	'comment': /;.*$/m,
-	'string': /(["'`])(?:\\.|(?!\1)[^\\\r\n])*\1/,
-	'label': {
-		pattern: /(^\s*)[A-Za-z._?$][\w.?$@~#]*:/m,
-		lookbehind: true,
-		alias: 'function'
-	},
-	'keyword': [
-		/\[?BITS (?:16|32|64)\]?/,
-		{
-			pattern: /(^\s*)section\s*[a-z.]+:?/im,
-			lookbehind: true
-		},
-		/(?:extern|global)[^;\r\n]*/i,
-		/(?:CPU|DEFAULT|FLOAT).*$/m
-	],
-	'register': {
-		pattern: /\b(?:st\d|[xyz]mm\d\d?|[cdt]r\d|r\d\d?[bwd]?|[er]?[abcd]x|[abcd][hl]|[er]?(?:bp|di|si|sp)|[cdefgs]s)\b/i,
-		alias: 'variable'
-	},
-	'number': /(?:\b|(?=\$))(?:0[hx](?:\.[\da-f]+|[\da-f]+(?:\.[\da-f]+)?)(?:p[+-]?\d+)?|\d[\da-f]+[hx]|\$\d[\da-f]*|0[oq][0-7]+|[0-7]+[oq]|0[by][01]+|[01]+[by]|0[dt]\d+|(?:\d+(?:\.\d+)?|\.\d+)(?:\.?e[+-]?\d+)?[dt]?)\b/i,
-	'operator': /[\[\]*+\-\/%<>=&|$!]/
-};