♻️ 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-makefile.js

@@ -1,34 +0,0 @@
-Prism.languages.makefile = {
-	'comment': {
-		pattern: /(^|[^\\])#(?:\\(?:\r\n|[\s\S])|[^\\\r\n])*/,
-		lookbehind: true
-	},
-	'string': {
-		pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
-		greedy: true
-	},
-
-	'builtin-target': {
-		pattern: /\.[A-Z][^:#=\s]+(?=\s*:(?!=))/,
-		alias: 'builtin'
-	},
-
-	'target': {
-		pattern: /^(?:[^:=\s]|[ \t]+(?![\s:]))+(?=\s*:(?!=))/m,
-		alias: 'symbol',
-		inside: {
-			'variable': /\$+(?:(?!\$)[^(){}:#=\s]+|(?=[({]))/
-		}
-	},
-	'variable': /\$+(?:(?!\$)[^(){}:#=\s]+|\([@*%<^+?][DF]\)|(?=[({]))/,
-
-	// Directives
-	'keyword': /-include\b|\b(?:define|else|endef|endif|export|ifn?def|ifn?eq|include|override|private|sinclude|undefine|unexport|vpath)\b/,
-
-	'function': {
-		pattern: /(\()(?:abspath|addsuffix|and|basename|call|dir|error|eval|file|filter(?:-out)?|findstring|firstword|flavor|foreach|guile|if|info|join|lastword|load|notdir|or|origin|patsubst|realpath|shell|sort|strip|subst|suffix|value|warning|wildcard|word(?:list|s)?)(?=[ \t])/,
-		lookbehind: true
-	},
-	'operator': /(?:::|[?:+!])?=|[|@]/,
-	'punctuation': /[:;(){}]/
-};