♻️ 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/graceful-fs/package.json

@@ -1,53 +0,0 @@
-{
-  "name": "graceful-fs",
-  "description": "A drop-in replacement for fs, making various improvements.",
-  "version": "4.2.11",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/isaacs/node-graceful-fs"
-  },
-  "main": "graceful-fs.js",
-  "directories": {
-    "test": "test"
-  },
-  "scripts": {
-    "preversion": "npm test",
-    "postversion": "npm publish",
-    "postpublish": "git push origin --follow-tags",
-    "test": "nyc --silent node test.js | tap -c -",
-    "posttest": "nyc report"
-  },
-  "keywords": [
-    "fs",
-    "module",
-    "reading",
-    "retry",
-    "retries",
-    "queue",
-    "error",
-    "errors",
-    "handling",
-    "EMFILE",
-    "EAGAIN",
-    "EINVAL",
-    "EPERM",
-    "EACCESS"
-  ],
-  "license": "ISC",
-  "devDependencies": {
-    "import-fresh": "^2.0.0",
-    "mkdirp": "^0.5.0",
-    "rimraf": "^2.2.8",
-    "tap": "^16.3.4"
-  },
-  "files": [
-    "fs.js",
-    "graceful-fs.js",
-    "legacy-streams.js",
-    "polyfills.js",
-    "clone.js"
-  ],
-  "tap": {
-    "reporter": "classic"
-  }
-}