feat: Upgrade to Astro with full PDPA compliance

PDPA Features:
✅ Cookie consent banner
✅ Consent logging API
✅ Admin dashboard
✅ Privacy Policy
✅ Terms & Conditions

Technical:
✅ Astro 5.x + Tailwind v4
✅ Docker on port 80
✅ SQLite database
✅ 15 pages built

Ready for Easypanel deployment.

node_modules/csso/cjs/replace/Atrule.cjs

@@ -0,0 +1,13 @@
+'use strict';
+
+const cssTree = require('css-tree');
+const keyframes = require('./atrule/keyframes.cjs');
+
+function Atrule(node) {
+    // compress @keyframe selectors
+    if (cssTree.keyword(node.name).basename === 'keyframes') {
+        keyframes(node);
+    }
+}
+
+module.exports = Atrule;