feat: evolution per player (optional)

polylan_submitter/place/api.py

@@ -36,9 +36,15 @@ def canvas(request: HttpRequest, event_path: str):
 
 @router.get(f"{PREFIX}/evolution.gif", auth=django_auth_is_staff)
 @decorate_view(require_game_enabled(path="place"))
-def evolution_gif(request: HttpRequest, event_path: str):
-    """Admin-only: replays the full placement history as an animated GIF."""
-    return HttpResponse(build_evolution_gif(request.event), content_type="image/gif")
+def evolution_gif(request: HttpRequest, event_path: str, players: str = ""):
+    """Admin-only: replays the full placement history as an animated GIF.
+
+    `players` is an optional comma-separated list of usernames to only
+    replay those players' placements (combined)."""
+    usernames = [name.strip() for name in players.split(",") if name.strip()]
+    return HttpResponse(
+        build_evolution_gif(request.event, usernames), content_type="image/gif"
+    )
 
 
 @router.get(f"{PREFIX}/placements.csv", auth=django_auth_is_staff)