♻️ 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/mdast-util-to-markdown/lib/handle/index.js

@@ -1,45 +0,0 @@
-import {blockquote} from './blockquote.js'
-import {hardBreak} from './break.js'
-import {code} from './code.js'
-import {definition} from './definition.js'
-import {emphasis} from './emphasis.js'
-import {heading} from './heading.js'
-import {html} from './html.js'
-import {image} from './image.js'
-import {imageReference} from './image-reference.js'
-import {inlineCode} from './inline-code.js'
-import {link} from './link.js'
-import {linkReference} from './link-reference.js'
-import {list} from './list.js'
-import {listItem} from './list-item.js'
-import {paragraph} from './paragraph.js'
-import {root} from './root.js'
-import {strong} from './strong.js'
-import {text} from './text.js'
-import {thematicBreak} from './thematic-break.js'
-
-/**
- * Default (CommonMark) handlers.
- */
-export const handle = {
-  blockquote,
-  break: hardBreak,
-  code,
-  definition,
-  emphasis,
-  hardBreak,
-  heading,
-  html,
-  image,
-  imageReference,
-  inlineCode,
-  link,
-  linkReference,
-  list,
-  listItem,
-  paragraph,
-  root,
-  strong,
-  text,
-  thematicBreak
-}