♻️ 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-qore.min.js

@@ -1 +0,0 @@
-Prism.languages.qore=Prism.languages.extend("clike",{comment:{pattern:/(^|[^\\])(?:\/\*[\s\S]*?\*\/|(?:\/\/|#).*)/,lookbehind:!0},string:{pattern:/("|')(?:\\[\s\S]|(?!\1)[^\\])*\1/,greedy:!0},keyword:/\b(?:abstract|any|assert|binary|bool|boolean|break|byte|case|catch|char|class|code|const|continue|data|default|do|double|else|enum|extends|final|finally|float|for|goto|hash|if|implements|import|inherits|instanceof|int|interface|long|my|native|new|nothing|null|object|our|own|private|reference|rethrow|return|short|soft(?:bool|date|float|int|list|number|string)|static|strictfp|string|sub|super|switch|synchronized|this|throw|throws|transient|try|void|volatile|while)\b/,boolean:/\b(?:false|true)\b/i,function:/\$?\b(?!\d)\w+(?=\()/,number:/\b(?:0b[01]+|0x(?:[\da-f]*\.)?[\da-fp\-]+|(?:\d+(?:\.\d+)?|\.\d+)(?:e\d+)?[df]|(?:\d+(?:\.\d+)?|\.\d+))\b/i,operator:{pattern:/(^|[^.])(?:\+[+=]?|-[-=]?|[!=](?:==?|~)?|>>?=?|<(?:=>?|<=?)?|&[&=]?|\|[|=]?|[*\/%^]=?|[~?])/,lookbehind:!0},variable:/\$(?!\d)\w+\b/});