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/cli/infra/process-operating-system-provider.js

@@ -0,0 +1,12 @@
+class ProcessOperatingSystemProvider {
+  #platformToOs = {
+    darwin: "macOS",
+    win32: "Windows",
+    linux: "Linux"
+  };
+  name = process.platform;
+  displayName = `${this.#platformToOs[this.name] ?? this.name} (${process.arch})`;
+}
+export {
+  ProcessOperatingSystemProvider
+};