♻️ 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-protobuf.min.js

@@ -1 +0,0 @@
-!function(e){var s=/\b(?:bool|bytes|double|s?fixed(?:32|64)|float|[su]?int(?:32|64)|string)\b/;e.languages.protobuf=e.languages.extend("clike",{"class-name":[{pattern:/(\b(?:enum|extend|message|service)\s+)[A-Za-z_]\w*(?=\s*\{)/,lookbehind:!0},{pattern:/(\b(?:rpc\s+\w+|returns)\s*\(\s*(?:stream\s+)?)\.?[A-Za-z_]\w*(?:\.[A-Za-z_]\w*)*(?=\s*\))/,lookbehind:!0}],keyword:/\b(?:enum|extend|extensions|import|message|oneof|option|optional|package|public|repeated|required|reserved|returns|rpc(?=\s+\w)|service|stream|syntax|to)\b(?!\s*=\s*\d)/,function:/\b[a-z_]\w*(?=\s*\()/i}),e.languages.insertBefore("protobuf","operator",{map:{pattern:/\bmap<\s*[\w.]+\s*,\s*[\w.]+\s*>(?=\s+[a-z_]\w*\s*[=;])/i,alias:"class-name",inside:{punctuation:/[<>.,]/,builtin:s}},builtin:s,"positional-class-name":{pattern:/(?:\b|\B\.)[a-z_]\w*(?:\.[a-z_]\w*)*(?=\s+[a-z_]\w*\s*[=;])/i,alias:"class-name",inside:{punctuation:/\./}},annotation:{pattern:/(\[\s*)[a-z_]\w*(?=\s*=)/i,lookbehind:!0}})}(Prism);