fix: add avatar imager cache-buster for instant clothing updates

.env.example

@@ -26,9 +26,10 @@ APP_URL=http://localhost:3002
 AUTH_URL=http://localhost:3002
 
 # --- IMAGER ---
-IMAGING_UPSTREAM_URL=http://127.0.0.1:3030/imaging
+# Avatar imager: Polaris-imager (avatar-imaging-pixinode) serves /avatarimage on 8082.
+IMAGING_UPSTREAM_URL=http://127.0.0.1:8082/avatarimage
 # Runtime values: changing these only requires recreating the container.
-IMAGER_URL=http://127.0.0.1:3030/imaging
+IMAGER_URL=http://127.0.0.1:8082/avatarimage
 BADGE_URL=/swf/c_images/album1584
 # Legacy NEXT_PUBLIC_IMAGER_URL / NEXT_PUBLIC_BADGE_URL are still read at runtime.