feat: 核心模块增强 — 加密 + 运行时配置 + 日志缓冲

- crypto.py: API Key 加密/解密工具
- runtime_config.py: 运行时动态配置管理
- log_buffer.py: 内存日志缓冲区
- config.py: 新增加密配置项
- http_client.py: 增强重试和错误处理

src/api/routes/backtest.py

@@ -6,7 +6,7 @@ import logging
 from fastapi import APIRouter, Depends, HTTPException
 from pydantic import BaseModel, Field
 
-from src.api.deps import require_admin_key
+from src.api.deps import require_admin
 from src.llm.backtest import run_backtest
 
 logger = logging.getLogger(__name__)
@@ -23,7 +23,7 @@ class BacktestRequest(BaseModel):
     model: str | None = Field(None, description="指定模型 (空=默认)")
 
 
-@router.post("/backtest", dependencies=[Depends(require_admin_key)])
+@router.post("/backtest", dependencies=[Depends(require_admin)])
 async def backtest(req: BacktestRequest):
     """对历史比赛运行回测。
 
@@ -64,6 +64,8 @@ async def backtest(req: BacktestRequest):
                 "league_code": r.league_code,
                 "home_team": r.home_team,
                 "away_team": r.away_team,
+                "home_team_zh": r.home_team_zh,
+                "away_team_zh": r.away_team_zh,
                 "match_date": r.match_date,
                 "actual_score": f"{r.actual_home}-{r.actual_away}",
                 "actual_1x2": r.actual_1x2,