♻️ 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/clsx/package.json

@@ -1,60 +0,0 @@
-{
-  "name": "clsx",
-  "version": "2.1.1",
-  "repository": "lukeed/clsx",
-  "description": "A tiny (239B) utility for constructing className strings conditionally.",
-  "module": "dist/clsx.mjs",
-  "unpkg": "dist/clsx.min.js",
-  "main": "dist/clsx.js",
-  "types": "clsx.d.ts",
-  "license": "MIT",
-  "exports": {
-    ".": {
-      "import": {
-        "types": "./clsx.d.mts",
-        "default": "./dist/clsx.mjs"
-      },
-      "default": {
-        "types": "./clsx.d.ts",
-        "default": "./dist/clsx.js"
-      }
-    },
-    "./lite": {
-      "import": {
-        "types": "./clsx.d.mts",
-        "default": "./dist/lite.mjs"
-      },
-      "default": {
-        "types": "./clsx.d.ts",
-        "default": "./dist/lite.js"
-      }
-    }
-  },
-  "author": {
-    "name": "Luke Edwards",
-    "email": "luke.edwards05@gmail.com",
-    "url": "https://lukeed.com"
-  },
-  "engines": {
-    "node": ">=6"
-  },
-  "scripts": {
-    "build": "node bin",
-    "test": "uvu -r esm test"
-  },
-  "files": [
-    "*.d.mts",
-    "*.d.ts",
-    "dist"
-  ],
-  "keywords": [
-    "classes",
-    "classname",
-    "classnames"
-  ],
-  "devDependencies": {
-    "esm": "3.2.25",
-    "terser": "4.8.0",
-    "uvu": "0.5.4"
-  }
-}