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/vite-plugin-astro/query.js

@@ -0,0 +1,26 @@
+function parseAstroRequest(id) {
+  const [filename, rawQuery] = id.split(`?`, 2);
+  const query = Object.fromEntries(new URLSearchParams(rawQuery).entries());
+  if (query.astro != null) {
+    query.astro = true;
+  }
+  if (query.src != null) {
+    query.src = true;
+  }
+  if (query.index != null) {
+    query.index = Number(query.index);
+  }
+  if (query.raw != null) {
+    query.raw = true;
+  }
+  if (query.inline != null) {
+    query.inline = true;
+  }
+  return {
+    filename,
+    query
+  };
+}
+export {
+  parseAstroRequest
+};