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/css-tree/lib/syntax/node/Dimension.js

@@ -0,0 +1,23 @@
+import { Dimension } from '../../tokenizer/index.js';
+
+export const name = 'Dimension';
+export const structure = {
+    value: String,
+    unit: String
+};
+
+export function parse() {
+    const start = this.tokenStart;
+    const value = this.consumeNumber(Dimension);
+
+    return {
+        type: 'Dimension',
+        loc: this.getLocation(start, this.tokenStart),
+        value,
+        unit: this.substring(start + value.length, this.tokenStart)
+    };
+}
+
+export function generate(node) {
+    this.token(Dimension, node.value + node.unit);
+}