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/endpoint/shared.js

@@ -0,0 +1,60 @@
+import { imageConfig } from "astro:assets";
+import { isRemotePath, removeQueryString } from "@astrojs/internal-helpers/path";
+import { isRemoteAllowed } from "@astrojs/internal-helpers/remote";
+import * as mime from "mrmime";
+import { getConfiguredImageService } from "../internal.js";
+import { etag } from "../utils/etag.js";
+async function loadRemoteImage(src) {
+  try {
+    const res = await fetch(src, { redirect: "manual" });
+    if (res.status >= 300 && res.status < 400) {
+      return void 0;
+    }
+    if (!res.ok) {
+      return void 0;
+    }
+    return Buffer.from(await res.arrayBuffer());
+  } catch {
+    return void 0;
+  }
+}
+const handleImageRequest = async ({
+  request,
+  loadLocalImage
+}) => {
+  const imageService = await getConfiguredImageService();
+  if (!("transform" in imageService)) {
+    throw new Error("Configured image service is not a local service");
+  }
+  const url = new URL(request.url);
+  const transform = await imageService.parseURL(url, imageConfig);
+  if (!transform?.src) {
+    return new Response("Invalid request", { status: 400 });
+  }
+  let inputBuffer = void 0;
+  if (isRemotePath(transform.src)) {
+    if (!isRemoteAllowed(transform.src, imageConfig)) {
+      return new Response("Forbidden", { status: 403 });
+    }
+    inputBuffer = await loadRemoteImage(new URL(transform.src));
+  } else {
+    inputBuffer = await loadLocalImage(removeQueryString(transform.src), url);
+  }
+  if (!inputBuffer) {
+    return new Response("Internal Server Error", { status: 500 });
+  }
+  const { data, format } = await imageService.transform(inputBuffer, transform, imageConfig);
+  return new Response(data, {
+    status: 200,
+    headers: {
+      "Content-Type": mime.lookup(format) ?? `image/${format}`,
+      "Cache-Control": "public, max-age=31536000",
+      ETag: etag(data.toString()),
+      Date: (/* @__PURE__ */ new Date()).toUTCString()
+    }
+  });
+};
+export {
+  handleImageRequest,
+  loadRemoteImage
+};