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/layout.d.ts

@@ -0,0 +1,25 @@
+import type { ImageLayout } from './types.js';
+export declare const DEFAULT_RESOLUTIONS: number[];
+export declare const LIMITED_RESOLUTIONS: number[];
+/**
+ * Gets the breakpoints for an image, based on the layout and width
+ *
+ * The rules are as follows:
+ *
+ * - For full-width layout we return all breakpoints smaller than the original image width
+ * - For fixed layout we return 1x and 2x the requested width, unless the original image is smaller than that.
+ * - For responsive layout we return all breakpoints smaller than 2x the requested width, unless the original image is smaller than that.
+ */
+export declare const getWidths: ({ width, layout, breakpoints, originalWidth, }: {
+    width?: number;
+    layout: ImageLayout;
+    breakpoints?: Array<number>;
+    originalWidth?: number;
+}) => Array<number>;
+/**
+ * Gets the `sizes` attribute for an image, based on the layout and width
+ */
+export declare const getSizesAttribute: ({ width, layout, }: {
+    width?: number;
+    layout?: ImageLayout;
+}) => string | undefined;