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/@oslojs/encoding/README.md

@@ -0,0 +1,23 @@
+# @oslojs/encoding
+
+**Documentation: https://encoding.oslojs.dev**
+
+A JavaScript library for encoding and decoding data with hexadecimal, base32, base64, and base64url encoding schemes based on [RFC 4648](https://datatracker.ietf.org/doc/html/rfc4648). Implementations may be stricter than most to follow the RFC as close as possible.
+
+- Runtime-agnostic
+- No third-party dependencies
+- Fully typed
+
+```ts
+import { encodeBase64, decodeBase64 } from "@oslojs/encoding";
+
+const data: Uint8Array = new TextEncoder().encode("hello world");
+const encoded = encodeBase64(data);
+const decoded = decodeBase64(encoded);
+```
+
+## Installation
+
+```
+npm i @oslojs/encoding
+```