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/micromark-extension-gfm-strikethrough/dev/lib/html.js

@@ -0,0 +1,26 @@
+/**
+ * @import {HtmlExtension} from 'micromark-util-types'
+ */
+
+/**
+ * Create an HTML extension for `micromark` to support GFM strikethrough when
+ * serializing to HTML.
+ *
+ * @returns {HtmlExtension}
+ *   Extension for `micromark` that can be passed in `htmlExtensions`, to
+ *   support GFM strikethrough when serializing to HTML.
+ */
+export function gfmStrikethroughHtml() {
+  return {
+    enter: {
+      strikethrough() {
+        this.tag('<del>')
+      }
+    },
+    exit: {
+      strikethrough() {
+        this.tag('</del>')
+      }
+    }
+  }
+}