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/zod-to-json-schema/dist/esm/getRelativePath.js

@@ -0,0 +1,8 @@
+export const getRelativePath = (pathA, pathB) => {
+    let i = 0;
+    for (; i < pathA.length && i < pathB.length; i++) {
+        if (pathA[i] !== pathB[i])
+            break;
+    }
+    return [(pathA.length - i).toString(), ...pathB.slice(i)].join("/");
+};