feat(settings): rename custom gateway models

app/appconfig.py

@@ -1003,6 +1003,25 @@ def update_ai_model(model_name, path=AI_MODELS_PATH, **fields) -> None:
     save_ai_models_config(config, path=path)
 
 
+def rename_ai_model(model_name, new_name, path=AI_MODELS_PATH) -> dict:
+    """Rename one AI model while preserving every other stored field."""
+
+    config = load_ai_models_config(path)
+    index = _model_index(config["models"], model_name)
+    renamed = copy.deepcopy(config["models"][index])
+    renamed["name"] = str(new_name or "").strip()
+    if not renamed["name"]:
+        raise ConfigError("AI 模型名称不能为空")
+    if renamed["name"] != model_name and any(
+        model["name"] == renamed["name"] for model in config["models"]
+    ):
+        raise ConfigError(f"AI 模型名称已存在：{renamed['name']}")
+    normalized = _normalize_ai_model(renamed)
+    config["models"][index] = normalized
+    save_ai_models_config(config, path=path)
+    return copy.deepcopy(normalized)
+
+
 def delete_ai_model(name, path=AI_MODELS_PATH) -> None:
     config = load_ai_models_config(path)
     index = _model_index(config["models"], name)