♻️ 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-rescript.min.js

@@ -1 +0,0 @@
-Prism.languages.rescript={comment:{pattern:/\/\/.*|\/\*[\s\S]*?(?:\*\/|$)/,greedy:!0},char:{pattern:/'(?:[^\r\n\\]|\\(?:.|\w+))'/,greedy:!0},string:{pattern:/"(?:\\(?:\r\n|[\s\S])|[^\\\r\n"])*"/,greedy:!0},"class-name":/\b[A-Z]\w*|@[a-z.]*|#[A-Za-z]\w*|#\d/,function:{pattern:/[a-zA-Z]\w*(?=\()|(\.)[a-z]\w*/,lookbehind:!0},number:/(?:\b0x(?:[\da-f]+(?:\.[\da-f]*)?|\.[\da-f]+)(?:p[+-]?\d+)?|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e[+-]?\d+)?)[ful]{0,4}/i,boolean:/\b(?:false|true)\b/,"attr-value":/[A-Za-z]\w*(?==)/,constant:{pattern:/(\btype\s+)[a-z]\w*/,lookbehind:!0},tag:{pattern:/(<)[a-z]\w*|(?:<\/)[a-z]\w*/,lookbehind:!0,inside:{operator:/<|>|\//}},keyword:/\b(?:and|as|assert|begin|bool|class|constraint|do|done|downto|else|end|exception|external|float|for|fun|function|if|in|include|inherit|initializer|int|lazy|let|method|module|mutable|new|nonrec|object|of|open|or|private|rec|string|switch|then|to|try|type|when|while|with)\b/,operator:/\.{3}|:[:=]?|\|>|->|=(?:==?|>)?|<=?|>=?|[|^?'#!~`]|[+\-*\/]\.?|\b(?:asr|land|lor|lsl|lsr|lxor|mod)\b/,punctuation:/[(){}[\],;.]/},Prism.languages.insertBefore("rescript","string",{"template-string":{pattern:/`(?:\\[\s\S]|\$\{(?:[^{}]|\{(?:[^{}]|\{[^}]*\})*\})+\}|(?!\$\{)[^\\`])*`/,greedy:!0,inside:{"template-punctuation":{pattern:/^`|`$/,alias:"string"},interpolation:{pattern:/((?:^|[^\\])(?:\\{2})*)\$\{(?:[^{}]|\{(?:[^{}]|\{[^}]*\})*\})+\}/,lookbehind:!0,inside:{"interpolation-punctuation":{pattern:/^\$\{|\}$/,alias:"tag"},rest:Prism.languages.rescript}},string:/[\s\S]+/}}}),Prism.languages.res=Prism.languages.rescript;