♻️ 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-scala.min.js

@@ -1 +0,0 @@
-Prism.languages.scala=Prism.languages.extend("java",{"triple-quoted-string":{pattern:/"""[\s\S]*?"""/,greedy:!0,alias:"string"},string:{pattern:/("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,greedy:!0},keyword:/<-|=>|\b(?:abstract|case|catch|class|def|derives|do|else|enum|extends|extension|final|finally|for|forSome|given|if|implicit|import|infix|inline|lazy|match|new|null|object|opaque|open|override|package|private|protected|return|sealed|self|super|this|throw|trait|transparent|try|type|using|val|var|while|with|yield)\b/,number:/\b0x(?:[\da-f]*\.)?[\da-f]+|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e\d+)?[dfl]?/i,builtin:/\b(?:Any|AnyRef|AnyVal|Boolean|Byte|Char|Double|Float|Int|Long|Nothing|Short|String|Unit)\b/,symbol:/'[^\d\s\\]\w*/}),Prism.languages.insertBefore("scala","triple-quoted-string",{"string-interpolation":{pattern:/\b[a-z]\w*(?:"""(?:[^$]|\$(?:[^{]|\{(?:[^{}]|\{[^{}]*\})*\}))*?"""|"(?:[^$"\r\n]|\$(?:[^{]|\{(?:[^{}]|\{[^{}]*\})*\}))*")/i,greedy:!0,inside:{id:{pattern:/^\w+/,greedy:!0,alias:"function"},escape:{pattern:/\\\$"|\$[$"]/,greedy:!0,alias:"symbol"},interpolation:{pattern:/\$(?:\w+|\{(?:[^{}]|\{[^{}]*\})*\})/,greedy:!0,inside:{punctuation:/^\$\{?|\}$/,expression:{pattern:/[\s\S]+/,inside:Prism.languages.scala}}},string:/[\s\S]+/}}}),delete Prism.languages.scala["class-name"],delete Prism.languages.scala.function,delete Prism.languages.scala.constant;