feat: cream terminal redesign, English-only UI, autopilot launch fixes

- Redesign dashboard into a cream-paper + vermilion IBM Plex Mono terminal
  (live L2 order book, cost/liq map, WS K-line, signal matrix, orchestration
  topology, risk radar, execution log, current positions, equity curve)
- Convert all user-facing UI and backend strings/prompts from Chinese to
  English (multi-language retained, default English)
- Add /api/statistics/full endpoint + full-stats frontend wiring
- Fix Autopilot launch: reuse the existing trader instead of creating
  duplicates (eliminates repeat ~35s create cost and stale-trader 404s);
  launch sends 5m scan interval
- Fix unreadable toasts: cream theme with high-contrast text + per-type accent
- Silence background dashboard polls (getTraderConfig) to stop error-toast spam

web/src/router/AppRoutes.tsx

@@ -25,7 +25,7 @@ import { BeginnerOnboardingPage } from '../pages/BeginnerOnboardingPage'
 import { DataPage } from '../pages/DataPage'
 import { SettingsPage } from '../pages/SettingsPage'
 import { StrategyStudioPage } from '../pages/StrategyStudioPage'
-import { TraderDashboardPage } from '../pages/TraderDashboardPage'
+import { TerminalDashboard } from '../components/terminal/TerminalDashboard'
 import { useAuth } from '../contexts/AuthContext'
 import { useLanguage } from '../contexts/LanguageContext'
 import { useSystemConfig } from '../hooks/useSystemConfig'
@@ -35,9 +35,7 @@ import { getUserMode } from '../lib/onboarding'
 import type {
   AccountInfo,
   DecisionRecord,
-  Exchange,
   Position,
-  Statistics,
   SystemStatus,
   TraderInfo,
 } from '../types'
@@ -73,7 +71,7 @@ function LoadingScreen() {
   return (
     <div
       className="min-h-screen flex items-center justify-center"
-      style={{ background: '#0B0E11' }}
+      style={{ background: '#F1ECE2' }}
     >
       <div className="text-center">
         <img
@@ -81,7 +79,7 @@ function LoadingScreen() {
           alt="NoFx Logo"
           className="w-16 h-16 mx-auto mb-4 animate-pulse"
         />
-        <p style={{ color: '#EAECEF' }}>{t('loading', language)}</p>
+        <p style={{ color: '#1A1813' }}>{t('loading', language)}</p>
       </div>
     </div>
   )
@@ -160,7 +158,7 @@ function AppChrome({
   return (
     <div
       className="min-h-screen"
-      style={{ background: '#0B0E11', color: '#EAECEF' }}
+      style={{ background: '#F1ECE2', color: '#1A1813' }}
     >
       <HeaderBar
         isLoggedIn={!!user}
@@ -226,14 +224,13 @@ function TradersRoute({
 }
 
 function DashboardRoute() {
-  const { language } = useLanguage()
   const { user, token } = useAuth()
   const navigate = useNavigate()
   const [searchParams] = useSearchParams()
   const selectedTraderSlug = searchParams.get('trader') || undefined
   const [selectedTraderId, setSelectedTraderId] = useState<string | undefined>()
-  const [lastUpdate, setLastUpdate] = useState<string>('--:--:--')
-  const [decisionsLimit, setDecisionsLimit] = useState(5)
+  const [, setLastUpdate] = useState<string>('--:--:--')
+  const [decisionsLimit] = useState(5)
   const [accountPollOff, setAccountPollOff] = useState(false)
   const [positionsPollOff, setPositionsPollOff] = useState(false)
   const [decisionsPollOff, setDecisionsPollOff] = useState(false)
@@ -244,7 +241,7 @@ function DashboardRoute() {
     setDecisionsPollOff(false)
   }, [selectedTraderId])
 
-  const { data: traders, error: tradersError } = useSWR<TraderInfo[]>(
+  const { data: traders } = useSWR<TraderInfo[]>(
     user && token ? 'traders-dashboard' : null,
     () => api.getTraders(true),
     {
@@ -253,15 +250,6 @@ function DashboardRoute() {
     }
   )
 
-  const { data: exchanges } = useSWR<Exchange[]>(
-    user && token ? 'exchanges-dashboard' : null,
-    api.getExchangeConfigs,
-    {
-      refreshInterval: 60000,
-      shouldRetryOnError: false,
-    }
-  )
-
   useEffect(() => {
     if (!traders || traders.length === 0) {
       return
@@ -359,16 +347,6 @@ function DashboardRoute() {
     }
   )
 
-  const { data: stats } = useSWR<Statistics>(
-    selectedTraderId ? `statistics-${selectedTraderId}` : null,
-    () => api.getStatistics(selectedTraderId, true),
-    {
-      refreshInterval: 30000,
-      revalidateOnFocus: false,
-      dedupingInterval: 20000,
-    }
-  )
-
   useEffect(() => {
     if (account) {
       setLastUpdate(new Date().toLocaleTimeString())
@@ -381,22 +359,13 @@ function DashboardRoute() {
 
   return (
     <AppChrome currentPage="trader" animateContent>
-      <TraderDashboardPage
+      <TerminalDashboard
         selectedTrader={selectedTrader}
         status={status}
         account={account}
-        accountFailed={accountPollOff}
         positions={positions}
-        positionsFailed={positionsPollOff}
         decisions={decisions}
-        decisionsFailed={decisionsPollOff}
-        decisionsLimit={decisionsLimit}
-        onDecisionsLimitChange={setDecisionsLimit}
-        stats={stats}
-        lastUpdate={lastUpdate}
-        language={language}
         traders={traders}
-        tradersError={tradersError}
         selectedTraderId={selectedTraderId}
         onTraderSelect={(traderId) => {
           setSelectedTraderId(traderId)
@@ -408,8 +377,6 @@ function DashboardRoute() {
             }
           )
         }}
-        onNavigateToTraders={() => navigate(ROUTES.traders)}
-        exchanges={exchanges}
       />
     </AppChrome>
   )