♻️ 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-shell-session.min.js

@@ -1 +0,0 @@
-!function(s){var n=['"(?:\\\\[^]|\\$\\([^)]+\\)|\\$(?!\\()|`[^`]+`|[^"\\\\`$])*"',"'[^']*'","\\$'(?:[^'\\\\]|\\\\[^])*'","<<-?\\s*([\"']?)(\\w+)\\1\\s[^]*?[\r\n]\\2"].join("|");s.languages["shell-session"]={command:{pattern:RegExp('^(?:[^\\s@:$#%*!/\\\\]+@[^\r\n@:$#%*!/\\\\]+(?::[^\0-\\x1F$#%*?"<>:;|]+)?|[/~.][^\0-\\x1F$#%*?"<>@:;|]*)?[$#%](?=\\s)'+"(?:[^\\\\\r\n \t'\"<$]|[ \t](?:(?!#)|#.*$)|\\\\(?:[^\r]|\r\n?)|\\$(?!')|<(?!<)|<<str>>)+".replace(/<<str>>/g,(function(){return n})),"m"),greedy:!0,inside:{info:{pattern:/^[^#$%]+/,alias:"punctuation",inside:{user:/^[^\s@:$#%*!/\\]+@[^\r\n@:$#%*!/\\]+/,punctuation:/:/,path:/[\s\S]+/}},bash:{pattern:/(^[$#%]\s*)\S[\s\S]*/,lookbehind:!0,alias:"language-bash",inside:s.languages.bash},"shell-symbol":{pattern:/^[$#%]/,alias:"important"}}},output:/.(?:.*(?:[\r\n]|.$))*/},s.languages["sh-session"]=s.languages.shellsession=s.languages["shell-session"]}(Prism);