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/postcss/lib/comment.js

@@ -0,0 +1,13 @@
+'use strict'
+
+let Node = require('./node')
+
+class Comment extends Node {
+  constructor(defaults) {
+    super(defaults)
+    this.type = 'comment'
+  }
+}
+
+module.exports = Comment
+Comment.default = Comment