♻️ 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-autoit.min.js

@@ -1 +0,0 @@
-Prism.languages.autoit={comment:[/;.*/,{pattern:/(^[\t ]*)#(?:comments-start|cs)[\s\S]*?^[ \t]*#(?:ce|comments-end)/m,lookbehind:!0}],url:{pattern:/(^[\t ]*#include\s+)(?:<[^\r\n>]+>|"[^\r\n"]+")/m,lookbehind:!0},string:{pattern:/(["'])(?:\1\1|(?!\1)[^\r\n])*\1/,greedy:!0,inside:{variable:/([%$@])\w+\1/}},directive:{pattern:/(^[\t ]*)#[\w-]+/m,lookbehind:!0,alias:"keyword"},function:/\b\w+(?=\()/,variable:/[$@]\w+/,keyword:/\b(?:Case|Const|Continue(?:Case|Loop)|Default|Dim|Do|Else(?:If)?|End(?:Func|If|Select|Switch|With)|Enum|Exit(?:Loop)?|For|Func|Global|If|In|Local|Next|Null|ReDim|Select|Static|Step|Switch|Then|To|Until|Volatile|WEnd|While|With)\b/i,number:/\b(?:0x[\da-f]+|\d+(?:\.\d+)?(?:e[+-]?\d+)?)\b/i,boolean:/\b(?:False|True)\b/i,operator:/<[=>]?|[-+*\/=&>]=?|[?^]|\b(?:And|Not|Or)\b/i,punctuation:/[\[\]().,:]/};