♻️ 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
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✅ 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-uri.min.js

@@ -1 +0,0 @@
-Prism.languages.uri={scheme:{pattern:/^[a-z][a-z0-9+.-]*:/im,greedy:!0,inside:{"scheme-delimiter":/:$/}},fragment:{pattern:/#[\w\-.~!$&'()*+,;=%:@/?]*/,inside:{"fragment-delimiter":/^#/}},query:{pattern:/\?[\w\-.~!$&'()*+,;=%:@/?]*/,inside:{"query-delimiter":{pattern:/^\?/,greedy:!0},"pair-delimiter":/[&;]/,pair:{pattern:/^[^=][\s\S]*/,inside:{key:/^[^=]+/,value:{pattern:/(^=)[\s\S]+/,lookbehind:!0}}}}},authority:{pattern:RegExp("^//(?:[\\w\\-.~!$&'()*+,;=%:]*@)?(?:\\[(?:[0-9a-fA-F:.]{2,48}|v[0-9a-fA-F]+\\.[\\w\\-.~!$&'()*+,;=]+)\\]|[\\w\\-.~!$&'()*+,;=%]*)(?::\\d*)?","m"),inside:{"authority-delimiter":/^\/\//,"user-info-segment":{pattern:/^[\w\-.~!$&'()*+,;=%:]*@/,inside:{"user-info-delimiter":/@$/,"user-info":/^[\w\-.~!$&'()*+,;=%:]+/}},"port-segment":{pattern:/:\d*$/,inside:{"port-delimiter":/^:/,port:/^\d+/}},host:{pattern:/[\s\S]+/,inside:{"ip-literal":{pattern:/^\[[\s\S]+\]$/,inside:{"ip-literal-delimiter":/^\[|\]$/,"ipv-future":/^v[\s\S]+/,"ipv6-address":/^[\s\S]+/}},"ipv4-address":/^(?:(?:[03-9]\d?|[12]\d{0,2})\.){3}(?:[03-9]\d?|[12]\d{0,2})$/}}}},path:{pattern:/^[\w\-.~!$&'()*+,;=%:@/]+/m,inside:{"path-separator":/\//}}},Prism.languages.url=Prism.languages.uri;