fix(P2): no_data 结构化、权重校验、鉴权与前端竞态

P2-1 no_data 门控依赖文案子串(脆弱):
- context_builder 新增 SliceResult(text/has_data/n_records),
  5 个切片函数改为显式声明 has_data
- base._slice_has_data() 优先取结构化结果,str 返回仍走文案回退
  (兼容既有测试 mock 与自定义切片)
- build_context 的 has_stats/has_injuries 直接取切片声明

P2-2 agent_weights 无校验即落库:
- validation 新增 AgentWeightsSchema / validate_agent_weights:
  未知专家名丢弃、越界值钳制、总和非 1 时归一化
- orchestrator 落库前对 agent_weights 做校验

P2-3 1x2 与比分不一致被静默修正:
- 仍以比分修正,但补 logger.warning 暴露 LLM 自相矛盾

P2-5/P2-6 prompt 缓存不可刷新 + 缓存键不含模板内容:
- 新增 clear_prompt_cache() 供改模板后显式失效
- 缓存键纳入模板内容 hash,模板一改缓存自动失效

P2-7 ingest/backtest/settle 接口无鉴权:
- 新增 require_admin_key 依赖(X-API-Key),
  ADMIN_API_KEY 未设置时放行并告警(不破坏本地开发)
- 挂到 3 个 ingest 接口 + backtest + eval/settle

P2-8 前端请求竞态 + 未使用游标分页:
- Matches.tsx 用递增 seq 丢弃过期响应,避免旧筛选结果覆盖新筛选
- 接入后端已有的 cursor 分页 + 「加载更多」按钮

附带: .env.example 补齐 LLM_TIMEOUT / 分档模型 / ADMIN_API_KEY;
tests 新增 10 个用例覆盖 P2-1/2/3。

src/api/routes/ingest.py

@@ -3,8 +3,9 @@ from __future__ import annotations
 
 import logging
 
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, Depends, HTTPException
 
+from src.api.deps import require_admin_key
 from src.api.schemas import IngestBzzoiroRequest, IngestResponse, IngestUnderstatRequest, IngestInjuriesRequest, IngestSimpleResponse
 from src.data.sources import get_source
 from src.data.injuries import ingest_injuries
@@ -15,7 +16,7 @@ logger = logging.getLogger(__name__)
 router = APIRouter(prefix="/api/v1", tags=["ingest"])
 
 
-@router.post("/ingest/bzzoiro", response_model=IngestResponse)
+@router.post("/ingest/bzzoiro", response_model=IngestResponse, dependencies=[Depends(require_admin_key)])
 async def ingest_bzzoiro_route(req: IngestBzzoiroRequest):
     """触发 bzzoiro 采集。"""
     source = get_source("bzzoiro")
@@ -34,7 +35,7 @@ async def ingest_bzzoiro_route(req: IngestBzzoiroRequest):
         raise HTTPException(500, "数据采集失败,请查看服务器日志")
 
 
-@router.post("/ingest/understat", response_model=IngestSimpleResponse)
+@router.post("/ingest/understat", response_model=IngestSimpleResponse, dependencies=[Depends(require_admin_key)])
 async def ingest_understat_route(req: IngestUnderstatRequest):
     """触发 understat xG 回填。"""
     source = get_source("understat")
@@ -47,7 +48,7 @@ async def ingest_understat_route(req: IngestUnderstatRequest):
         raise HTTPException(500, "xG 回填失败,请查看服务器日志")
 
 
-@router.post("/ingest/injuries", response_model=IngestSimpleResponse)
+@router.post("/ingest/injuries", response_model=IngestSimpleResponse, dependencies=[Depends(require_admin_key)])
 async def ingest_injuries_route(req: IngestInjuriesRequest):
     """触发伤停采集。"""
     try: