feat: 优化用量状态同步机制和 OpenAI CLI 流式转换

- 增加状态回退保护，防止异步响应覆盖已知状态
- 添加轮询并发保护 (pollInFlight)，避免重复请求
- 支持 cancelled 状态筛选和显示
- 前端 mergeRecordStatus 保护活跃记录状态
- 后端 streaming 状态同步更新改为使用当前 DB 会话
- OpenAI CLI 流式转换增加工具调用事件支持
- 轮询接口新增 target_model 字段返回
- 修复迁移脚本 inspector 缓存问题，改用 information_schema

src/api/admin/usage/routes.py

@@ -857,7 +857,7 @@ class AdminUsageRecordsAdapter(AdminApiAdapter):
                 query = query.filter(Usage.is_stream == False)  # noqa: E712
             elif self.status == "error":
                 query = query.filter((Usage.status_code >= 400) | (Usage.error_message.isnot(None)))
-            elif self.status in ("pending", "streaming", "completed"):
+            elif self.status in ("pending", "streaming", "completed", "cancelled"):
                 # 新的状态筛选：直接按 status 字段过滤
                 query = query.filter(Usage.status == self.status)
             elif self.status == "failed":