♻️ 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/@astrojs/telemetry/dist/post.js

@@ -1,11 +0,0 @@
-const ASTRO_TELEMETRY_ENDPOINT = `https://telemetry.astro.build/api/v1/record`;
-function post(body) {
-  return fetch(ASTRO_TELEMETRY_ENDPOINT, {
-    method: "POST",
-    body: JSON.stringify(body),
-    headers: { "content-type": "application/json" }
-  });
-}
-export {
-  post
-};