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/util/compile-pattern.js

@@ -0,0 +1,24 @@
+/**
+ * @import {CompilePattern} from '../types.js'
+ */
+
+/**
+ * @type {CompilePattern}
+ */
+export function compilePattern(pattern) {
+  if (!pattern._compiled) {
+    const before =
+      (pattern.atBreak ? '[\\r\\n][\\t ]*' : '') +
+      (pattern.before ? '(?:' + pattern.before + ')' : '')
+
+    pattern._compiled = new RegExp(
+      (before ? '(' + before + ')' : '') +
+        (/[|\\{}()[\]^$+*?.-]/.test(pattern.character) ? '\\' : '') +
+        pattern.character +
+        (pattern.after ? '(?:' + pattern.after + ')' : ''),
+      'g'
+    )
+  }
+
+  return pattern._compiled
+}