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/astro/dist/container/vite-plugin-container.js

@@ -0,0 +1,15 @@
+const virtualModuleId = "astro:container";
+function astroContainer() {
+  return {
+    name: "astro:container",
+    enforce: "pre",
+    resolveId(id) {
+      if (id === virtualModuleId) {
+        return this.resolve("astro/virtual-modules/container.js");
+      }
+    }
+  };
+}
+export {
+  astroContainer as default
+};