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/api/routes/schedules.py

@@ -10,7 +10,8 @@ from sqlalchemy import select, delete
 from src.api.deps import require_admin
 from src.api.schemas import ScheduleIn, ScheduleUpdate, ScheduleOut
 from src.core.scheduler import scheduler
-from src.data.bzzoiro import ingest_bzzoiro_event_stats, ingest_bzzoiro_standings
+from src.data.bzzoiro_standings import ingest_bzzoiro_standings
+from src.data.bzzoiro_stats import ingest_bzzoiro_event_stats
 from src.data.sources import get_source
 from src.data.config import BZZOIRO_LEAGUE_IDS
 from src.db.base import AsyncSession, get_db_read