feat(douyu): 和平小店扭蛋碎片查询 + 深色模式修复 + 任务状态 WS 即时推送

- 碎片: 新增 query_xpd_fragments 任务, 复用 e语言 gamecoin 接口取扭蛋币 jb2,
  账号已存角色回退(规避 Livelink 风控), accounts.xpd_fragments 字段与迁移
- 列表: 和平小店移除鱼翅/限制兑换/换绑时间列, 新增扭蛋碎片列;
  操作区硬编码白底改用 theme token, 深色模式适配(三个手册共用)
- 轮询: 任务状态经 WS(level=task)即时推送(二维码/绑定进度即时展示),
  pending/running/终态全覆盖, REST/WS 载荷统一 douyu_task_payload,
  raw 快照递归剥离, HTTP 轮询降频 5s/30s 兜底

web/backend/services/douyu_runner.py

@@ -22,6 +22,7 @@ from .douyu_service import (
     douyu_config_value,
     ensure_douyu_config,
     latest_success_cookie,
+    douyu_task_payload,
     update_account_profile_from_cookie,
 )
 
@@ -345,6 +346,22 @@ class DouyuBatchRunner:
             return ""
         return f"{role_name}（{channel}）" if channel else role_name
 
+    def _push_task_event(self, task: DouyuTask) -> None:
+        """向批次 WS 推送任务状态事件（level=task），前端即时更新不依赖轮询。"""
+        if not self.log_queue or not self.loop:
+            return
+        try:
+            payload = douyu_task_payload(task)
+        except Exception:
+            logger.exception("[douyu] 推送任务状态失败: task_id={}", task.id)
+            return
+        event = {
+            "level": "task",
+            "message": "",
+            "task": payload,
+        }
+        asyncio.run_coroutine_threadsafe(self.log_queue.put(event), self.loop)
+
     def _mark_task(
         self,
         db: Session,
@@ -359,6 +376,7 @@ class DouyuBatchRunner:
             task.result = result
         task.finished_at = datetime.now(timezone.utc)
         db.commit()
+        self._push_task_event(task)
 
     def _update_task_progress(
         self,
@@ -373,6 +391,7 @@ class DouyuBatchRunner:
         if result is not None:
             task.result = result
         db.commit()
+        self._push_task_event(task)
 
     def _upsert_goods(self, db: Session, goods: list[dict]) -> None:
         now = datetime.now(timezone.utc)
@@ -1334,6 +1353,67 @@ class DouyuBatchRunner:
             {"balance": balance, "role": role, "area_id": area_id},
         )
 
+    def _execute_query_xpd_fragments(
+        self,
+        db: Session,
+        task: DouyuTask,
+        account: Account,
+        cookie: str,
+        config: dict,
+    ):
+        """查询和平小店扭蛋碎片数量。
+
+        优先现查角色；getrole 受限（Livelink 风控/失效）时回退账号已存角色，
+        保证已绑定账号仍可查询。
+        """
+        client = self._client(cookie)
+        act_id = str(config["xpd_act_id"])
+        embed_query: dict = {}
+        openid = str(account.xpd_openid or "")
+        roleid = str(account.xpd_role_id or "")
+        plat = str(account.xpd_plat_id or "1")
+        areaid = str(account.xpd_area_id or 1)
+        role: dict = {}
+        try:
+            ctx = self._xpd_role_context(client, config)
+            embed_query = ctx["embed"]["query"]
+            role = ctx["role"] if isinstance(ctx.get("role"), dict) else {}
+            if role.get("role_id"):
+                role_area = self._xpd_area_id(role, account)
+                openid = str(role.get("game_open_id") or "") or openid
+                roleid = str(role.get("role_id") or "") or roleid
+                plat = str(role.get("plat_id") or "1") or plat
+                areaid = str(role_area) or areaid
+                self._apply_xpd_role_to_account(account, role, role_area)
+        except Exception:
+            pass
+        if not openid or not roleid:
+            self._mark_task(db, task, "failed", "未获取到小店绑定角色，请先生成二维码扫码绑定")
+            return
+        result = client.xpd_fragments(
+            embed_query=embed_query,
+            act_id=act_id,
+            openid=openid,
+            roleid=roleid,
+            plat=plat,
+            areaid=areaid,
+        )
+        fragments = result.get("fragments")
+        account.xpd_fragments = fragments
+        account.xpd_bind_status = "xpd_fragments_queried"
+        account.updated_at = datetime.now(timezone.utc)
+        db.commit()
+        if fragments is None:
+            self._mark_task(db, task, "failed", "未获取到小店扭蛋碎片数量")
+            return
+        self._mark_task(
+            db,
+            task,
+            "success",
+            f"小店扭蛋碎片: {fragments}",
+            {"fragments": fragments, "role": role, "area_id": int(areaid)},
+        )
+
     def _execute_get_bind_qr(self, db: Session, task: DouyuTask, account: Account, cookie: str, config: dict):
         client = self._client(cookie)
         qr_act_alias = self._bind_qr_act_alias(config)
@@ -2584,9 +2664,7 @@ class DouyuBatchRunner:
             if not task or self._stop.is_set():
                 return
             account = task.account
-            task.status = "running"
-            task.message = "执行中"
-            worker_db.commit()
+            self._update_task_progress(worker_db, task, "running", "执行中")
 
             with self._counter_lock:
                 self._started += 1
@@ -2631,6 +2709,7 @@ class DouyuBatchRunner:
                 "query_xpd_role": self._execute_query_xpd_role,
                 "refresh_xpd_goods": self._execute_refresh_xpd_goods,
                 "query_xpd_balance": self._execute_query_xpd_balance,
+                "query_xpd_fragments": self._execute_query_xpd_fragments,
             }.get(task.task_type)
             if handler is None:
                 self._mark_task(worker_db, task, "failed", "不支持的任务类型")
@@ -2669,6 +2748,8 @@ class DouyuBatchRunner:
                 task.status = "pending"
                 task.message = "等待执行"
             self.db.commit()
+            for task in tasks:
+                self._push_task_event(task)
 
             total = len(tasks)
             with ThreadPoolExecutor(max_workers=self.concurrency) as executor: