♻️ 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/micromark-core-commonmark/index.js

@@ -1,22 +0,0 @@
-export { attention } from './lib/attention.js';
-export { autolink } from './lib/autolink.js';
-export { blankLine } from './lib/blank-line.js';
-export { blockQuote } from './lib/block-quote.js';
-export { characterEscape } from './lib/character-escape.js';
-export { characterReference } from './lib/character-reference.js';
-export { codeFenced } from './lib/code-fenced.js';
-export { codeIndented } from './lib/code-indented.js';
-export { codeText } from './lib/code-text.js';
-export { content } from './lib/content.js';
-export { definition } from './lib/definition.js';
-export { hardBreakEscape } from './lib/hard-break-escape.js';
-export { headingAtx } from './lib/heading-atx.js';
-export { htmlFlow } from './lib/html-flow.js';
-export { htmlText } from './lib/html-text.js';
-export { labelEnd } from './lib/label-end.js';
-export { labelStartImage } from './lib/label-start-image.js';
-export { labelStartLink } from './lib/label-start-link.js';
-export { lineEnding } from './lib/line-ending.js';
-export { list } from './lib/list.js';
-export { setextUnderline } from './lib/setext-underline.js';
-export { thematicBreak } from './lib/thematic-break.js';