♻️ 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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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/micromark-util-decode-string/package.json

@@ -1,63 +0,0 @@
-{
-  "name": "micromark-util-decode-string",
-  "version": "2.0.1",
-  "description": "micromark utility to decode markdown strings",
-  "license": "MIT",
-  "keywords": [
-    "micromark",
-    "util",
-    "utility",
-    "decode",
-    "character",
-    "reference",
-    "escape",
-    "string"
-  ],
-  "repository": "https://github.com/micromark/micromark/tree/main/packages/micromark-util-decode-string",
-  "bugs": "https://github.com/micromark/micromark/issues",
-  "funding": [
-    {
-      "type": "GitHub Sponsors",
-      "url": "https://github.com/sponsors/unifiedjs"
-    },
-    {
-      "type": "OpenCollective",
-      "url": "https://opencollective.com/unified"
-    }
-  ],
-  "author": "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)",
-  "contributors": [
-    "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)"
-  ],
-  "sideEffects": false,
-  "type": "module",
-  "files": [
-    "dev/",
-    "index.d.ts.map",
-    "index.d.ts",
-    "index.js"
-  ],
-  "exports": {
-    "development": "./dev/index.js",
-    "default": "./index.js"
-  },
-  "dependencies": {
-    "micromark-util-character": "^2.0.0",
-    "micromark-util-decode-numeric-character-reference": "^2.0.0",
-    "micromark-util-symbol": "^2.0.0",
-    "decode-named-character-reference": "^1.0.0"
-  },
-  "scripts": {
-    "build": "micromark-build"
-  },
-  "xo": {
-    "envs": [
-      "shared-node-browser"
-    ],
-    "prettier": true,
-    "rules": {
-      "unicorn/prefer-code-point": "off",
-      "unicorn/prefer-string-replace-all": "off"
-    }
-  }
-}