♻️ 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-hcl.min.js

@@ -1 +0,0 @@
-Prism.languages.hcl={comment:/(?:\/\/|#).*|\/\*[\s\S]*?(?:\*\/|$)/,heredoc:{pattern:/<<-?(\w+\b)[\s\S]*?^[ \t]*\1/m,greedy:!0,alias:"string"},keyword:[{pattern:/(?:data|resource)\s+(?:"(?:\\[\s\S]|[^\\"])*")(?=\s+"[\w-]+"\s+\{)/i,inside:{type:{pattern:/(resource|data|\s+)(?:"(?:\\[\s\S]|[^\\"])*")/i,lookbehind:!0,alias:"variable"}}},{pattern:/(?:backend|module|output|provider|provisioner|variable)\s+(?:[\w-]+|"(?:\\[\s\S]|[^\\"])*")\s+(?=\{)/i,inside:{type:{pattern:/(backend|module|output|provider|provisioner|variable)\s+(?:[\w-]+|"(?:\\[\s\S]|[^\\"])*")\s+/i,lookbehind:!0,alias:"variable"}}},/[\w-]+(?=\s+\{)/],property:[/[-\w\.]+(?=\s*=(?!=))/,/"(?:\\[\s\S]|[^\\"])+"(?=\s*[:=])/],string:{pattern:/"(?:[^\\$"]|\\[\s\S]|\$(?:(?=")|\$+(?!\$)|[^"${])|\$\{(?:[^{}"]|"(?:[^\\"]|\\[\s\S])*")*\})*"/,greedy:!0,inside:{interpolation:{pattern:/(^|[^$])\$\{(?:[^{}"]|"(?:[^\\"]|\\[\s\S])*")*\}/,lookbehind:!0,inside:{type:{pattern:/(\b(?:count|data|local|module|path|self|terraform|var)\b\.)[\w\*]+/i,lookbehind:!0,alias:"variable"},keyword:/\b(?:count|data|local|module|path|self|terraform|var)\b/i,function:/\w+(?=\()/,string:{pattern:/"(?:\\[\s\S]|[^\\"])*"/,greedy:!0},number:/\b0x[\da-f]+\b|\b\d+(?:\.\d*)?(?:e[+-]?\d+)?/i,punctuation:/[!\$#%&'()*+,.\/;<=>@\[\\\]^`{|}~?:]/}}}},number:/\b0x[\da-f]+\b|\b\d+(?:\.\d*)?(?:e[+-]?\d+)?/i,boolean:/\b(?:false|true)\b/i,punctuation:/[=\[\]{}]/};