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/csso/lib/clean/index.js

@@ -0,0 +1,28 @@
+import { walk } from 'css-tree';
+import Atrule from './Atrule.js';
+import Comment from './Comment.js';
+import Declaration from './Declaration.js';
+import Raw from './Raw.js';
+import Rule from './Rule.js';
+import TypeSelector from './TypeSelector.js';
+import WhiteSpace from './WhiteSpace.js';
+
+const handlers = {
+    Atrule,
+    Comment,
+    Declaration,
+    Raw,
+    Rule,
+    TypeSelector,
+    WhiteSpace
+};
+
+export default function(ast, options) {
+    walk(ast, {
+        leave(node, item, list) {
+            if (handlers.hasOwnProperty(node.type)) {
+                handlers[node.type].call(this, node, item, list, options);
+            }
+        }
+    });
+};