Fix object-form breaking on repeat pjax visits, and stray autofill in game rename field

object_form.js declared top-level const bindings, which pjax replays verbatim on every visit — the second visit threw "already declared" and silently broke "Ajouter un champ"/"Créer l'objet". Wrapped it in an IIFE. Also renamed the generic name="name" rename-game field to name="game_name" with autocomplete off, since browsers were autofilling it with unrelated previously-typed values.

routes/games/game_rename.py

@@ -7,7 +7,7 @@ from core.flask_app import app
 
 @app.route("/game/<slug>/rename", methods=["POST"])
 def game_rename(slug):
-    new_name = request.form.get("name", "").strip()
+    new_name = request.form.get("game_name", "").strip()
     if new_name:
         db.update_game_name(slug, new_name)
     return redirect(url_for("game_dashboard", slug=slug))