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/assets/utils/imageKind.js

@@ -0,0 +1,18 @@
+function isESMImportedImage(src) {
+  return typeof src === "object" || typeof src === "function" && "src" in src;
+}
+function isRemoteImage(src) {
+  return typeof src === "string";
+}
+async function resolveSrc(src) {
+  if (typeof src === "object" && "then" in src) {
+    const resource = await src;
+    return resource.default ?? resource;
+  }
+  return src;
+}
+export {
+  isESMImportedImage,
+  isRemoteImage,
+  resolveSrc
+};