♻️ 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/regex-utilities/package.json

@@ -1,35 +0,0 @@
-{
-  "name": "regex-utilities",
-  "version": "2.3.0",
-  "description": "Tiny helpers for processing regex syntax",
-  "author": "Steven Levithan",
-  "license": "MIT",
-  "type": "module",
-  "exports": {
-    ".": {
-      "types": "./types/index.d.ts",
-      "import": "./src/index.js"
-    }
-  },
-  "types": "./types/index.d.ts",
-  "scripts": {
-    "types": "tsc src/index.js --rootDir src --declaration --allowJs --emitDeclarationOnly --outdir types",
-    "prebuild": "rm -rf types/*",
-    "build": "npm run types",
-    "pretest": "npm run build",
-    "test": "jasmine",
-    "prepare": "npm test"
-  },
-  "files": [
-    "src",
-    "types"
-  ],
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/slevithan/regex-utilities.git"
-  },
-  "devDependencies": {
-    "jasmine": "^5.2.0",
-    "typescript": "5.5.4"
-  }
-}