♻️ 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/cssesc/package.json

@@ -1,51 +0,0 @@
-{
-  "name": "cssesc",
-  "version": "3.0.0",
-  "description": "A JavaScript library for escaping CSS strings and identifiers while generating the shortest possible ASCII-only output.",
-  "homepage": "https://mths.be/cssesc",
-  "engines": {
-    "node": ">=4"
-  },
-  "main": "cssesc.js",
-  "bin": "bin/cssesc",
-  "man": "man/cssesc.1",
-  "keywords": [
-    "css",
-    "escape",
-    "identifier",
-    "string",
-    "tool"
-  ],
-  "license": "MIT",
-  "author": {
-    "name": "Mathias Bynens",
-    "url": "https://mathiasbynens.be/"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/mathiasbynens/cssesc.git"
-  },
-  "bugs": "https://github.com/mathiasbynens/cssesc/issues",
-  "files": [
-    "LICENSE-MIT.txt",
-    "cssesc.js",
-    "bin/",
-    "man/"
-  ],
-  "scripts": {
-    "build": "grunt template && babel cssesc.js -o cssesc.js",
-    "test": "mocha tests",
-    "cover": "istanbul cover --report html node_modules/.bin/_mocha tests -- -u exports -R spec"
-  },
-  "devDependencies": {
-    "babel-cli": "^6.26.0",
-    "babel-preset-env": "^1.6.1",
-    "codecov": "^1.0.1",
-    "grunt": "^1.0.1",
-    "grunt-template": "^1.0.0",
-    "istanbul": "^0.4.4",
-    "mocha": "^2.5.3",
-    "regenerate": "^1.2.1",
-    "requirejs": "^2.1.16"
-  }
-}