♻️ 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-gettext.min.js

@@ -1 +0,0 @@
-Prism.languages.gettext={comment:[{pattern:/# .*/,greedy:!0,alias:"translator-comment"},{pattern:/#\..*/,greedy:!0,alias:"extracted-comment"},{pattern:/#:.*/,greedy:!0,alias:"reference-comment"},{pattern:/#,.*/,greedy:!0,alias:"flag-comment"},{pattern:/#\|.*/,greedy:!0,alias:"previously-untranslated-comment"},{pattern:/#.*/,greedy:!0}],string:{pattern:/(^|[^\\])"(?:[^"\\]|\\.)*"/,lookbehind:!0,greedy:!0},keyword:/^msg(?:ctxt|id|id_plural|str)\b/m,number:/\b\d+\b/,punctuation:/[\[\]]/},Prism.languages.po=Prism.languages.gettext;