fix(export+calls): 同类owner错位问题全面修复(群导出不按owner过滤+群语音客户点击走群聊路由)

- /api/export/chat-html: room 查询忽略 owner(chat_group owner 错位同
  ChatTimeline,群列表/聊天页的导出按钮原来会导出空文件)
- CallList viewCallCustomer: talker 以 @chatroom 结尾→group-chat 路由
  (原走 1:1 路由按 talker_id 查@chatroom 恒空)
- TDD: 群消息在 ownerB 名下用 ownerA+room 导出仍能拿到;428 测试绿
- 实测:错位 owner 导出 43304 群返回 15002 个消息元素

Co-Authored-By: Claude <noreply@anthropic.com>

yunke-server/app/api/routers/export.py

@@ -128,21 +128,22 @@ async def export_chat_html(
     start: Annotated[int | None, Query(ge=0)] = None,
     end: Annotated[int | None, Query(ge=0)] = None,
 ) -> Response:
-    q = (
-        sa.select(Message)
-        .where(Message.channel == channel)
-        .where(Message.owner_account_id == owner_account_id)
-    )
+    # 群聊(room_id)不按 owner 过滤:chat_group 表按 room 去重、owner 被末位
+    # 员工覆盖,与消息实际归属 owner 错位会导出空文件(同 ChatTimeline 修复,
+    # 2026-08-22);room 全局唯一且消息只在单一 owner 名下。
+    q = sa.select(Message).where(Message.channel == channel)
     peer = ""
     if room_id:
         q = q.where(Message.room_id == room_id)
         peer = room_id
-    elif talker_id:
-        # DM：限定 room_id 为空，避免误捞群消息
-        q = q.where(Message.talker_id == talker_id).where(
-            (Message.room_id == None) | (Message.room_id == "")  # noqa: E711
-        )
-        peer = talker_id
+    else:
+        q = q.where(Message.owner_account_id == owner_account_id)
+        if talker_id:
+            # DM：限定 room_id 为空，避免误捞群消息
+            q = q.where(Message.talker_id == talker_id).where(
+                (Message.room_id == None) | (Message.room_id == "")  # noqa: E711
+            )
+            peer = talker_id
     if start is not None:
         q = q.where(Message.timestamp >= start)
     if end is not None: