♻️ 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

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prismjs/components/prism-wren.min.js

@@ -1 +0,0 @@
-Prism.languages.wren={comment:[{pattern:/\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*)|\/\*(?:[^*/]|\*(?!\/)|\/(?!\*))*\*\/)*\*\/)*\*\//,greedy:!0},{pattern:/(^|[^\\:])\/\/.*/,lookbehind:!0,greedy:!0}],"triple-quoted-string":{pattern:/"""[\s\S]*?"""/,greedy:!0,alias:"string"},"string-literal":null,hashbang:{pattern:/^#!\/.+/,greedy:!0,alias:"comment"},attribute:{pattern:/#!?[ \t\u3000]*\w+/,alias:"keyword"},"class-name":[{pattern:/(\bclass\s+)\w+/,lookbehind:!0},/\b[A-Z][a-z\d_]*\b/],constant:/\b[A-Z][A-Z\d_]*\b/,null:{pattern:/\bnull\b/,alias:"keyword"},keyword:/\b(?:as|break|class|construct|continue|else|for|foreign|if|import|in|is|return|static|super|this|var|while)\b/,boolean:/\b(?:false|true)\b/,number:/\b(?:0x[\da-f]+|\d+(?:\.\d+)?(?:e[+-]?\d+)?)\b/i,function:/\b[a-z_]\w*(?=\s*[({])/i,operator:/<<|>>|[=!<>]=?|&&|\|\||[-+*/%~^&|?:]|\.{2,3}/,punctuation:/[\[\](){}.,;]/},Prism.languages.wren["string-literal"]={pattern:/(^|[^\\"])"(?:[^\\"%]|\\[\s\S]|%(?!\()|%\((?:[^()]|\((?:[^()]|\([^)]*\))*\))*\))*"/,lookbehind:!0,greedy:!0,inside:{interpolation:{pattern:/((?:^|[^\\])(?:\\{2})*)%\((?:[^()]|\((?:[^()]|\([^)]*\))*\))*\)/,lookbehind:!0,inside:{expression:{pattern:/^(%\()[\s\S]+(?=\)$)/,lookbehind:!0,inside:Prism.languages.wren},"interpolation-punctuation":{pattern:/^%\(|\)$/,alias:"punctuation"}}},string:/[\s\S]+/}};