Add photo galleries API and frontend for public and admin viewing.

Introduces the Go photo-api service, nginx/systemd deploy wiring, and Next.js gallery/lightbox pages so event photos can be managed and browsed.

Co-authored-by: Cursor <cursoragent@cursor.com>

deploy/back-end_nginx.conf

@@ -63,6 +63,29 @@ server {
         return 413 '{"error":"Payload too large (413). Please upload a smaller file."}';
     }
 
+    # Photo gallery service (photo-api, port 3020). ^~ wins over the /
+    # prefix below; bigger body cap and unbuffered uploads for photo batches.
+    location ^~ /api/photos/ {
+        limit_req zone=spanglish_api_limit burst=50 nodelay;
+
+        proxy_pass http://spanglish_photos;
+        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;
+
+        # Strip CORS headers from the service (nginx handles CORS here)
+        proxy_hide_header 'Access-Control-Allow-Origin';
+        proxy_hide_header 'Access-Control-Allow-Methods';
+
+        client_max_body_size 100m;
+        proxy_request_buffering off;
+        proxy_read_timeout 300s;
+        proxy_connect_timeout 300s;
+    }
+
     location / {
         limit_req zone=spanglish_api_limit burst=50 nodelay;