♻️ 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)

dealplustech-astro/node_modules/astro/dist/runtime/client/idle.js

@@ -1,19 +0,0 @@
-const idleDirective = (load, options) => {
-  const cb = async () => {
-    const hydrate = await load();
-    await hydrate();
-  };
-  const rawOptions = typeof options.value === "object" ? options.value : void 0;
-  const idleOptions = {
-    timeout: rawOptions?.timeout
-  };
-  if ("requestIdleCallback" in window) {
-    window.requestIdleCallback(cb, idleOptions);
-  } else {
-    setTimeout(cb, idleOptions.timeout || 200);
-  }
-};
-var idle_default = idleDirective;
-export {
-  idle_default as default
-};