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/sharp/install/check.js

@@ -0,0 +1,14 @@
+/*!
+  Copyright 2013 Lovell Fuller and others.
+  SPDX-License-Identifier: Apache-2.0
+*/
+
+try {
+  const { useGlobalLibvips } = require('../lib/libvips');
+  if (useGlobalLibvips() || process.env.npm_config_build_from_source) {
+    process.exit(1);
+  }
+} catch (err) {
+  const summary = err.message.split(/\n/).slice(0, 1);
+  console.log(`sharp: skipping install check: ${summary}`);
+}