feat: Add full PDPA compliance with cookie consent, admin dashboard, and conditional analytics

Features implemented:
✅ Cookie consent banner (Accept/Reject) with localStorage storage
✅ Conditional Umami Analytics (loads only with consent)
✅ Admin dashboard at /admin/consent-logs (password protected)
✅ API endpoints for consent logging (POST/GET/DELETE)
✅ Astro DB integration with consent logging schema
✅ Production-ready Dockerfile with Node.js server adapter
✅ Node.js 20+ requirement for Astro 5.x compatibility

Files added:
- src/components/consent/CookieBanner.astro
- src/pages/api/consent/index.ts (POST/GET endpoints)
- src/pages/api/consent/[sessionId]/index.ts (DELETE endpoint)
- src/pages/admin/consent-logs.astro (admin dashboard)
- db/schema.ts (ConsentLog table schema)

Files modified:
- src/layouts/Layout.astro (CookieBanner + conditional Umami)
- astro.config.mjs (Node adapter + DB integration)
- package.json (start script, engines field, dependencies)
- Dockerfile (custom deployment with Node.js server)

Configuration:
- Umami Analytics: Conditional loading based on consent
- Admin password: 'changeme' (MUST change in production)
- Database: SQLite file (data/consent.db)
- Server: Node.js standalone adapter

Deployment:
- Docker build with SQLite runtime support
- Custom Dockerfile for Easypanel
- Start command: node dist/server/entry.mjs

Security notes:
⚠️  CHANGE ADMIN_PASSWORD before production deployment
⚠️  Enable HTTPS for secure cookie consent
⚠️  Consider server-side authentication for admin dashboard

astro.config.mjs

@@ -1,10 +1,14 @@
 // @ts-check
 import { defineConfig } from 'astro/config';
-
+import node from '@astrojs/node';
+import db from '@astrojs/db';
 import tailwindcss from '@tailwindcss/vite';
 
-// https://astro.build/config
 export default defineConfig({
+  adapter: node({
+    mode: 'standalone'
+  }),
+  integrations: [db()],
   vite: {
     plugins: [tailwindcss()]
   }