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/imageAttributes.js

@@ -0,0 +1,14 @@
+import { toStyleString } from "../../runtime/server/render/util.js";
+const cssFitValues = ["fill", "contain", "cover", "scale-down"];
+function addCSSVarsToStyle(vars, styles) {
+  const cssVars = Object.entries(vars).filter(([_, value]) => value !== void 0 && value !== false).map(([key, value]) => `--${key}: ${value};`).join(" ");
+  if (!styles) {
+    return cssVars;
+  }
+  const style = typeof styles === "string" ? styles : toStyleString(styles);
+  return `${cssVars} ${style}`;
+}
+export {
+  addCSSVarsToStyle,
+  cssFitValues
+};