♻️ 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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✅ 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-prolog.js

@@ -1,19 +0,0 @@
-Prism.languages.prolog = {
-	// Syntax depends on the implementation
-	'comment': {
-		pattern: /\/\*[\s\S]*?\*\/|%.*/,
-		greedy: true
-	},
-	// Depending on the implementation, strings may allow escaped newlines and quote-escape
-	'string': {
-		pattern: /(["'])(?:\1\1|\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1(?!\1)/,
-		greedy: true
-	},
-	'builtin': /\b(?:fx|fy|xf[xy]?|yfx?)\b/,
-	// FIXME: Should we list all null-ary predicates (not followed by a parenthesis) like halt, trace, etc.?
-	'function': /\b[a-z]\w*(?:(?=\()|\/\d+)/,
-	'number': /\b\d+(?:\.\d*)?/,
-	// Custom operators are allowed
-	'operator': /[:\\=><\-?*@\/;+^|!$.]+|\b(?:is|mod|not|xor)\b/,
-	'punctuation': /[(){}\[\],]/
-};