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/content/runtime-assets.js

@@ -0,0 +1,28 @@
+import { z } from "zod";
+import { emitESMImage } from "../assets/utils/node/emitAsset.js";
+function createImage(pluginContext, shouldEmitFile, entryFilePath, experimentalSvgEnabled) {
+  return () => {
+    return z.string().transform(async (imagePath, ctx) => {
+      const resolvedFilePath = (await pluginContext.resolve(imagePath, entryFilePath))?.id;
+      const metadata = await emitESMImage(
+        resolvedFilePath,
+        pluginContext.meta.watchMode,
+        // FUTURE: Remove in this in v6
+        experimentalSvgEnabled,
+        shouldEmitFile ? pluginContext.emitFile : void 0
+      );
+      if (!metadata) {
+        ctx.addIssue({
+          code: "custom",
+          message: `Image ${imagePath} does not exist. Is the path correct?`,
+          fatal: true
+        });
+        return z.never();
+      }
+      return { ...metadata, ASTRO_ASSET: metadata.fsPath };
+    });
+  };
+}
+export {
+  createImage
+};