♻️ 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-gradle.min.js

@@ -1 +0,0 @@
-!function(e){var n={pattern:/((?:^|[^\\$])(?:\\{2})*)\$(?:\w+|\{[^{}]*\})/,lookbehind:!0,inside:{"interpolation-punctuation":{pattern:/^\$\{?|\}$/,alias:"punctuation"},expression:{pattern:/[\s\S]+/,inside:null}}};e.languages.gradle=e.languages.extend("clike",{string:{pattern:/'''(?:[^\\]|\\[\s\S])*?'''|'(?:\\.|[^\\'\r\n])*'/,greedy:!0},keyword:/\b(?:apply|def|dependencies|else|if|implementation|import|plugin|plugins|project|repositories|repository|sourceSets|tasks|val)\b/,number:/\b(?:0b[01_]+|0x[\da-f_]+(?:\.[\da-f_p\-]+)?|[\d_]+(?:\.[\d_]+)?(?:e[+-]?\d+)?)[glidf]?\b/i,operator:{pattern:/(^|[^.])(?:~|==?~?|\?[.:]?|\*(?:[.=]|\*=?)?|\.[@&]|\.\.<|\.\.(?!\.)|-[-=>]?|\+[+=]?|!=?|<(?:<=?|=>?)?|>(?:>>?=?|=)?|&[&=]?|\|[|=]?|\/=?|\^=?|%=?)/,lookbehind:!0},punctuation:/\.+|[{}[\];(),:$]/}),e.languages.insertBefore("gradle","string",{shebang:{pattern:/#!.+/,alias:"comment",greedy:!0},"interpolation-string":{pattern:/"""(?:[^\\]|\\[\s\S])*?"""|(["/])(?:\\.|(?!\1)[^\\\r\n])*\1|\$\/(?:[^/$]|\$(?:[/$]|(?![/$]))|\/(?!\$))*\/\$/,greedy:!0,inside:{interpolation:n,string:/[\s\S]+/}}}),e.languages.insertBefore("gradle","punctuation",{"spock-block":/\b(?:and|cleanup|expect|given|setup|then|when|where):/}),e.languages.insertBefore("gradle","function",{annotation:{pattern:/(^|[^.])@\w+/,lookbehind:!0,alias:"punctuation"}}),n.inside.expression.inside=e.languages.gradle}(Prism);