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

frontend/src/admin/pages/Backtest.tsx

@@ -14,12 +14,15 @@ import { useEffect, useState } from 'react'
 import { triggerBacktest, fetchEvalSummary, fetchLeagues } from '../dal'
 import type { BacktestRequest, EvalSummary, League } from '../types'
 import { Card, CardBody, CardHeader, Badge, SectionHeader, Alert, Spinner } from '../components'
+import TeamSideTag from '../../components/TeamSideTag'
 
 interface BacktestResultRow {
   match_id: number
   league_code?: string | null
   home_team: string
   away_team: string
+  home_team_zh?: string | null
+  away_team_zh?: string | null
   match_date?: string | null
   actual_score: string
   actual_1x2?: string
@@ -279,8 +282,12 @@ export default function BacktestPage() {
                   <span className="w-24 flex-shrink-0 text-2xs tabular-nums text-ink-400">
                     {fmtDate(r.match_date)}
                   </span>
-                  <span className="min-w-0 flex-1 truncate text-sm text-ink-800">
-                    {r.home_team} vs {r.away_team}
+                  <span className="flex min-w-0 flex-1 items-center gap-1.5 text-sm text-ink-800">
+                    <TeamSideTag side="home" />
+                    <span className="truncate">{r.home_team_zh || r.home_team}</span>
+                    <span className="flex-shrink-0 text-ink-300">vs</span>
+                    <TeamSideTag side="away" />
+                    <span className="truncate">{r.away_team_zh || r.away_team}</span>
                   </span>
                   <span className="flex-shrink-0 text-xs tabular-nums text-ink-500">
                     实际 <span className="font-serif font-bold text-ink-900">{r.actual_score}</span>