♻️ 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-mata.min.js

@@ -1 +0,0 @@
-!function(t){var e="\\bvoid\\b|<org>|\\b(?:complex|numeric|pointer(?:\\s*\\([^()]*\\))?|real|string|(?:class|struct)\\s+\\w+|transmorphic)(?:\\s*<org>)?".replace(/<org>/g,"\\b(?:(?:col|row)?vector|matrix|scalar)\\b");t.languages.mata={comment:{pattern:/\/\/.*|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*]|\*(?!\/))*\*\/)*\*\//,greedy:!0},string:{pattern:/"[^"\r\n]*"|[‘`']".*?"[’`']/,greedy:!0},"class-name":{pattern:/(\b(?:class|extends|struct)\s+)\w+(?=\s*(?:\{|\bextends\b))/,lookbehind:!0},type:{pattern:RegExp(e),alias:"class-name",inside:{punctuation:/[()]/,keyword:/\b(?:class|function|struct|void)\b/}},keyword:/\b(?:break|class|continue|do|else|end|extends|external|final|for|function|goto|if|pragma|private|protected|public|return|static|struct|unset|unused|version|virtual|while)\b/,constant:/\bNULL\b/,number:{pattern:/(^|[^\w.])(?:\d+(?:\.\d+)?(?:e[+-]?\d+)?|\d[a-f0-9]*(?:\.[a-f0-9]+)?x[+-]?\d+)i?(?![\w.])/i,lookbehind:!0},missing:{pattern:/(^|[^\w.])(?:\.[a-z]?)(?![\w.])/,lookbehind:!0,alias:"symbol"},function:/\b[a-z_]\w*(?=\s*\()/i,operator:/\.\.|\+\+|--|&&|\|\||:?(?:[!=<>]=|[+\-*/^<>&|:])|[!?=\\#’`']/,punctuation:/[()[\]{},;.]/}}(Prism);