fix(proxy): stop advertising HTTP/3 and enable Caddy access logs

docker/Caddyfile

@@ -1,6 +1,27 @@
+{
+	# The compose port mapping publishes 443/tcp only, so QUIC never reaches
+	# the container. Without this, Caddy would still advertise h3 via Alt-Svc
+	# and clients that act on it hang for up to 30 days.
+	servers {
+		protocols h1 h2
+	}
+}
+
 {$DOMAIN} {
 	encode gzip
 
+	# Access log without client IPs — the diagnostic value here is whether a
+	# request arrived at all, which needs no personal data.
+	log {
+		format filter {
+			wrap json
+			fields {
+				request>remote_ip delete
+				request>client_ip delete
+			}
+		}
+	}
+
 	handle_path /api/* {
 		reverse_proxy backend:3123
 	}

docker/docker-compose.prod.yaml

@@ -4,6 +4,11 @@ services:
   caddy:
     image: caddy:2-alpine
     restart: unless-stopped
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "20m"
+        max-file: "10"
     ports:
       - "80:80"
       - "443:443"
@@ -70,4 +75,4 @@ networks:
   default:
     driver: bridge
     driver_opts:
-      com.docker.network.driver.mtu: "1450" # adjust to your indrastructure
+      com.docker.network.driver.mtu: "1450" # adjust to your infrastructure