fix(pipeline): 死信表真正接线 + 前端 HTTP 收敛与状态修正

- bzzoiro events/standings/stats 抓取失败写入 IngestFailure 死信(尽力而为,
  写入失败不影响主流程);顺带修复 standings 失败路径 league_r 缺 errors 键
  的 KeyError —— 该路径此前从未跑通,一旦失败会顶掉原始异常
- admin/api.ts 收敛为 lib/http.ts 薄门面,消除第二套 HTTP 实现;
  UNAUTHORIZED_EVENT 定义移至共享层,断开 lib→admin 反向依赖
- STATUS_META 死键 live 改为 in_play(对齐 normalize.py 口径),
  补 paused/postponed/cancelled/suspended;移除无人消费的
  DashboardStats.total_matches(items.length 近似,上限 100)
- 新增 tests/test_ingest_deadletter.py(6 例,变异验证判别力)

src/data/bzzoiro.py

@@ -200,6 +200,13 @@ class BzzoiroSource:
                 # 单联赛抓取失败隔离:记录错误后继续其余联赛,不拖垮整批
                 logger.exception("bzzoiro fetch failed for %s", code)
                 league_r["errors"].append(f"fetch failed: {e}")
+                await _safe_write_ingest_failure(
+                    db,
+                    entity_type="events",
+                    source_record_id=None,
+                    error=e,
+                    raw_payload={"league": code, "status": status, "date_from": date_from, "date_to": date_to},
+                )
                 result["leagues"][code] = league_r
                 continue
 
@@ -367,6 +374,31 @@ async def _write_ingest_failure(db, source_system: str, entity_type: str, source
     ))
 
 
+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(
@@ -418,12 +450,19 @@ async def ingest_bzzoiro_standings(db, *, leagues: Iterable[str], season: str |
 
     result: dict = {"leagues": {}, "total_upserted": 0, "errors": []}
     for code in leagues:
-        league_r: dict = {"upserted": 0, "teams_created": 0, "rows": 0}
+        league_r: dict = {"upserted": 0, "teams_created": 0, "rows": 0, "errors": []}
         try:
             payload = await fetch_bzzoiro_standings(code, season=season)
         except Exception as e:
             logger.exception("bzzoiro standings fetch failed for %s", code)
             league_r["errors"].append(str(e))
+            await _safe_write_ingest_failure(
+                db,
+                entity_type="standings",
+                source_record_id=None,
+                error=e,
+                raw_payload={"league": code, "season": season},
+            )
             result["leagues"][code] = league_r
             result["errors"].append(f"{code}: {e}")
             continue
@@ -634,6 +673,13 @@ async def ingest_bzzoiro_event_stats(
         except Exception as e:
             logger.warning("stats fetch failed match=%s event=%s: %s", m.id, m.source_event_id, e)
             result["errors"].append(f"match {m.id}: {e}")
+            await _safe_write_ingest_failure(
+                db,
+                entity_type="match_stats",
+                source_record_id=str(m.source_event_id),
+                error=e,
+                raw_payload={"match_id": m.id},
+            )
             await asyncio.sleep(REQUEST_INTERVAL)
             continue