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/mdast-util-to-markdown/lib/handle/paragraph.js

@@ -0,0 +1,20 @@
+/**
+ * @import {Info, State} from 'mdast-util-to-markdown'
+ * @import {Paragraph, Parents} from 'mdast'
+ */
+
+/**
+ * @param {Paragraph} node
+ * @param {Parents | undefined} _
+ * @param {State} state
+ * @param {Info} info
+ * @returns {string}
+ */
+export function paragraph(node, _, state, info) {
+  const exit = state.enter('paragraph')
+  const subexit = state.enter('phrasing')
+  const value = state.containerPhrasing(node, info)
+  subexit()
+  exit()
+  return value
+}