refactor: bzzoiro.py 按管线拆分为 5 个模块

单文件 852 行按职责拆分,保持 BzzoiroSource 与 get_source("bzzoiro") 行为不变:
- bzzoiro_common  HTTP 抓取(多 key 轮换) + 字段转换原语
- bzzoiro_events   fetch_bzzoiro_events + BzzoiroSource.ingest + Bronze 补写
- bzzoiro_standings  standings 管线
- bzzoiro_stats     stats 回填
- pipeline_write    RawEvent/IngestFailure/DataLineage 写入助手

子模块运行期经聚合门面 src.data.bzzoiro 解析可替换协作者,
单文件时代的 bz.* monkeypatch 语义完全保留。
路由 import 已指向新模块(ingest.py / schedules.py)。

src/data/pipeline_write.py

@@ -0,0 +1,80 @@
+"""管线基础设施写入助手:RawEvent(Bronze 原始载荷)/ IngestFailure(死信)/ DataLineage(血缘)。
+
+从 bzzoiro.py 拆出。约定(与拆分前一致):
+  - 只 add 不 commit —— 事务由调用方 UnitOfWork 控制,分批事务约定不变;
+  - 死信与 Bronze 写入同为 best-effort:失败只记 warning,绝不拖垮采集主流程。
+"""
+from __future__ import annotations
+
+import logging
+
+from src.db.models import DataLineage, IngestFailure, RawEvent
+
+logger = logging.getLogger(__name__)
+
+
+async def _write_raw_event(db, source_system: str, source_record_id: str, raw_payload: dict, batch_id: str | None = None) -> None:
+    """写入 Bronze 层原始事件(幂等:同 source_record_id 跳过)。"""
+    from sqlalchemy import select as _select
+    stmt = _select(RawEvent).where(
+        RawEvent.source_system == source_system,
+        RawEvent.source_record_id == source_record_id,
+    )
+    existing = (await db.execute(stmt)).scalar_one_or_none()
+    if existing is None:
+        db.add(RawEvent(
+            source_system=source_system,
+            source_record_id=source_record_id,
+            raw_payload=raw_payload,
+            ingest_batch_id=batch_id,
+        ))
+
+
+async def _write_ingest_failure(db, source_system: str, entity_type: str, source_record_id: str | None, error_type: str, error_detail: str | None, raw_payload: dict | None = None) -> None:
+    """写入采集失败死信。"""
+    db.add(IngestFailure(
+        source_system=source_system,
+        entity_type=entity_type,
+        source_record_id=source_record_id,
+        error_type=error_type,
+        error_detail=error_detail,
+        raw_payload=raw_payload,
+    ))
+
+
+async def _safe_write_ingest_failure(
+    db,
+    *,
+    entity_type: str,
+    source_record_id: str | None,
+    error: Exception,
+    raw_payload: dict | None = None,
+) -> None:
+    """抓取失败时尽力写入死信表(失败不影响主流程)。
+
+    死信是「可观测性」基础设施,与 RawEvent/Lineage 同级:写入失败只记
+    warning,绝不能让原始抓取错误之外的新异常打断采集循环。
+    """
+    try:
+        await _write_ingest_failure(
+            db, "bzzoiro", entity_type, source_record_id,
+            "fetch_error", str(error), raw_payload,
+        )
+    except Exception:
+        logger.warning(
+            "写入 ingest_failures 死信失败(entity=%s, record=%s): %s",
+            entity_type, source_record_id, error, exc_info=True,
+        )
+
+
+async def _write_lineage(db, source_system: str, source_record_id: str, target_table: str, target_id: int | None, transform_name: str, transform_detail: dict | None = None, batch_id: str | None = None) -> None:
+    """写入 ETL 血缘追踪。"""
+    db.add(DataLineage(
+        source_system=source_system,
+        source_record_id=source_record_id,
+        target_table=target_table,
+        target_id=target_id,
+        transform_name=transform_name,
+        transform_detail=transform_detail,
+        batch_id=batch_id,
+    ))