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/eval.py

@@ -5,7 +5,7 @@ import logging
 
 from fastapi import APIRouter, Depends, HTTPException
 
-from src.api.deps import require_admin_key
+from src.api.deps import require_admin
 from src.api.schemas import EvalSummaryOut, SettleRequest
 from src.db.base import AsyncSession, get_db, get_db_read
 from src.llm.eval import get_eval_summary, settle_prediction
@@ -15,7 +15,7 @@ logger = logging.getLogger(__name__)
 router = APIRouter(prefix="/api/v1", tags=["eval"])
 
 
-@router.post("/eval/settle", dependencies=[Depends(require_admin_key)])
+@router.post("/eval/settle", dependencies=[Depends(require_admin)])
 async def settle(req: SettleRequest, db: AsyncSession = Depends(get_db)):
     """回填实际结果。"""
     try:
@@ -29,7 +29,7 @@ async def settle(req: SettleRequest, db: AsyncSession = Depends(get_db)):
         raise HTTPException(500, "回填失败,请查看服务器日志")
 
 
-@router.get("/eval/summary", response_model=EvalSummaryOut)
+@router.get("/eval/summary", response_model=EvalSummaryOut, dependencies=[Depends(require_admin)])
 async def eval_summary():
     """提供商/模型准确率对比。"""
     return await get_eval_summary()