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/transformToPath.js

@@ -0,0 +1,32 @@
+import { basename, dirname, extname } from "node:path";
+import { deterministicString } from "deterministic-object-hash";
+import { removeQueryString } from "../../core/path.js";
+import { shorthash } from "../../runtime/server/shorthash.js";
+import { isESMImportedImage } from "./imageKind.js";
+const INVALID_CHAR_REGEX = /[\u0000-\u001F"#$%&*+,:;<=>?[\]^`{|}\u007F]/g;
+function propsToFilename(filePath, transform, hash) {
+  let filename = decodeURIComponent(removeQueryString(filePath));
+  const ext = extname(filename);
+  if (filePath.startsWith("data:")) {
+    filename = shorthash(filePath);
+  } else {
+    filename = basename(filename, ext).replace(INVALID_CHAR_REGEX, "_");
+  }
+  const prefixDirname = isESMImportedImage(transform.src) ? dirname(filePath) : "";
+  let outputExt = transform.format ? `.${transform.format}` : ext;
+  return `${prefixDirname}/${filename}_${hash}${outputExt}`;
+}
+function hashTransform(transform, imageService, propertiesToHash) {
+  const hashFields = propertiesToHash.reduce(
+    (acc, prop) => {
+      acc[prop] = transform[prop];
+      return acc;
+    },
+    { imageService }
+  );
+  return shorthash(deterministicString(hashFields));
+}
+export {
+  hashTransform,
+  propsToFilename
+};