feat(assets): Add NGINX config and migration scripts for MinIO assets

- Add NGINX reverse proxy config for assets.daarion.space
- Add script to migrate assets from /static/uploads to MinIO
- Add script to update asset URLs in database after migration

nginx/assets_daarion_space.conf

@@ -0,0 +1,52 @@
+# NGINX configuration for assets.daarion.space
+# Proxies requests to MinIO S3-compatible storage
+
+server {
+    server_name assets.daarion.space;
+
+    # MinIO S3 API proxy
+    location / {
+        proxy_pass http://127.0.0.1:9000;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        
+        # Allow large file uploads
+        client_max_body_size 100M;
+        
+        # CORS headers for public assets
+        add_header Access-Control-Allow-Origin * always;
+        add_header Access-Control-Allow-Methods "GET, HEAD, OPTIONS" always;
+        add_header Access-Control-Allow-Headers "Range, Content-Type" always;
+        
+        # Cache static assets
+        proxy_cache_valid 200 302 1d;
+        proxy_cache_valid 404 1h;
+        add_header Cache-Control "public, max-age=86400" always;
+    }
+
+    # Health check endpoint
+    location /minio/health/live {
+        proxy_pass http://127.0.0.1:9000/minio/health/live;
+        access_log off;
+    }
+
+    listen 443 ssl;
+    ssl_certificate /etc/letsencrypt/live/assets.daarion.space/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/assets.daarion.space/privkey.pem;
+    include /etc/letsencrypt/options-ssl-nginx.conf;
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
+}
+
+server {
+    if ($host = assets.daarion.space) {
+        return 301 https://$host$request_uri;
+    }
+
+    listen 80;
+    server_name assets.daarion.space;
+    return 404;
+}
+