♻️ 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/micromark-util-classify-character/index.js

@@ -1,27 +0,0 @@
-/**
- * @import {Code} from 'micromark-util-types'
- */
-
-import { markdownLineEndingOrSpace, unicodePunctuation, unicodeWhitespace } from 'micromark-util-character';
-/**
- * Classify whether a code represents whitespace, punctuation, or something
- * else.
- *
- * Used for attention (emphasis, strong), whose sequences can open or close
- * based on the class of surrounding characters.
- *
- * > 👉 **Note**: eof (`null`) is seen as whitespace.
- *
- * @param {Code} code
- *   Code.
- * @returns {typeof constants.characterGroupWhitespace | typeof constants.characterGroupPunctuation | undefined}
- *   Group.
- */
-export function classifyCharacter(code) {
-  if (code === null || markdownLineEndingOrSpace(code) || unicodeWhitespace(code)) {
-    return 1;
-  }
-  if (unicodePunctuation(code)) {
-    return 2;
-  }
-}