refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

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

@@ -0,0 +1,19 @@
+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
+};