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/css-tree/cjs/syntax/node/CDO.cjs

@@ -0,0 +1,26 @@
+'use strict';
+
+const types = require('../../tokenizer/types.cjs');
+
+const name = 'CDO';
+const structure = [];
+
+function parse() {
+    const start = this.tokenStart;
+
+    this.eat(types.CDO); // <!--
+
+    return {
+        type: 'CDO',
+        loc: this.getLocation(start, this.tokenStart)
+    };
+}
+
+function generate() {
+    this.token(types.CDO, '<!--');
+}
+
+exports.generate = generate;
+exports.name = name;
+exports.parse = parse;
+exports.structure = structure;