修复斗鱼绑定主链路：双 actAlias 分工与任务驱动扫码确认

扫码/确认走活动 alias，角色与换绑最新态优先查 cjm；生成二维码前强制校验换绑冷却，前端以任务结果为单一数据源展示二维码、待确认角色与换绑时间。

web/backend/services/douyu_service.py

@@ -34,7 +34,7 @@ SUPPORTED_DOUYU_TASK_TYPES = {
 DOUYU_CONFIG_DEFAULTS = {
     "manual_id": "G4KA4Qnz4LDp7",
     "rid": "9263298",
-    "bind_act_alias": "20250213NQCYX",
+    "bind_act_alias": "20260120QYOOB",
     "confirm_act_alias": "20260120QYOOB",
     "legacy_act_alias": "cjm",
     "room_id": "9263298",
@@ -64,6 +64,10 @@ def apply_douyu_config_defaults(config: DouyuConfig) -> bool:
     """补齐斗鱼配置默认值，返回是否发生变更。"""
     changed = False
     for field in DOUYU_CONFIG_FIELDS:
+        if field == "bind_act_alias" and str(getattr(config, field, "") or "").strip() == "20250213NQCYX":
+            setattr(config, field, DOUYU_CONFIG_DEFAULTS[field])
+            changed = True
+            continue
         normalized = douyu_config_value(field, getattr(config, field, None))
         if getattr(config, field, None) != normalized:
             setattr(config, field, normalized)