address review Minors: drop redundant filename replace, assert 暂无消息, tighten downloadBlob return type + try/finally, fix plan group time-picker wording. Co-Authored-By: Claude <noreply@anthropic.com>
支持 DM(talker_id) 与 群(room_id),可选 start/end 时间范围; is_send 决定气泡左右。对齐云客微信客户/群列表「导出HTML聊天记录」。 Co-Authored-By: Claude <noreply@anthropic.com>