♻️ 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)

easypanel.config.json

@@ -0,0 +1,16 @@
+{
+  "easypanel": {
+    "url": "",
+    "project": "customerwebsite",
+    "app": {
+      "name": "dealplustech-astro",
+      "port": 4321,
+      "image": "dealplustech-astro:latest"
+    },
+    "env": {
+      "NODE_ENV": "production",
+      "PORT": "4321",
+      "HOST": "0.0.0.0"
+    }
+  }
+}