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/prismjs/components/prism-nand2tetris-hdl.js

@@ -0,0 +1,9 @@
+Prism.languages['nand2tetris-hdl'] = {
+	'comment': /\/\/.*|\/\*[\s\S]*?(?:\*\/|$)/,
+	'keyword': /\b(?:BUILTIN|CHIP|CLOCKED|IN|OUT|PARTS)\b/,
+	'boolean': /\b(?:false|true)\b/,
+	'function': /\b[A-Za-z][A-Za-z0-9]*(?=\()/,
+	'number': /\b\d+\b/,
+	'operator': /=|\.\./,
+	'punctuation': /[{}[\];(),:]/
+};