fix(config): 补充 peace_enabled 字段声明并增加安全属性读取

- 在 DouyuConfigOut 与 DouyuConfigUpdate 中加入 peace_enabled 声明与序列化
- 在 update_config 中使用 getattr(req, field, None) 做安全兜底，避免 500

web/backend/routers/douyu.py

@@ -624,7 +624,7 @@ def update_config(
     config = ensure_douyu_config(db)
     changed_fields = []
     for field in DOUYU_CONFIG_FIELDS:
-        value = getattr(req, field)
+        value = getattr(req, field, None)
         if value is None:
             continue
         setattr(config, field, value.strip() if isinstance(value, str) else value)

web/backend/schemas.py

@@ -769,6 +769,7 @@ class DouyuConfigOut(BaseModel):
     esports_chicken_skin_id: str = "0"
     esports_firework_gift_id: str = "24767"
     esports_firework_skin_id: str = "3850"
+    peace_enabled: bool = False
     xpd_act_alias: str = "20260623KDQFH"
     xpd_act_id: str = "46195"
     xpd_rid: str = "9263298"
@@ -797,6 +798,7 @@ class DouyuConfigOut(BaseModel):
             "esports_chicken_skin_id": self.esports_chicken_skin_id,
             "esports_firework_gift_id": self.esports_firework_gift_id,
             "esports_firework_skin_id": self.esports_firework_skin_id,
+            "peace_enabled": self.peace_enabled,
             "xpd_act_alias": self.xpd_act_alias,
             "xpd_act_id": self.xpd_act_id,
             "xpd_rid": self.xpd_rid,
@@ -825,6 +827,7 @@ class DouyuConfigUpdate(BaseModel):
     esports_chicken_skin_id: str | None = None
     esports_firework_gift_id: str | None = None
     esports_firework_skin_id: str | None = None
+    peace_enabled: bool | None = None
     xpd_act_alias: str | None = None
     xpd_act_id: str | None = None
     xpd_rid: str | None = None