扫描终端按需加载：后端支持 trading_region 过滤 + skip_polymarket 快速通道

scan_terminal_service：trading_region 参数预过滤城市列表。scan_terminal_city_row：快速模式跳过 Polymarket RPC。前端 hook 支持按区域查询。

frontend/components/dashboard/scan-terminal/MarketOverviewView.tsx

@@ -280,7 +280,7 @@ export function MarketOverviewView({
         </div>
       </Panel>
 
-      <Panel title={isEn ? "Top Opportunities" : "Top Opportunities"}>
+      <Panel title={isEn ? "Top Opportunities" : "最佳机会"}>
         <CompactRowsTable
           empty={isEn ? "No opportunities" : "暂无机会"}
           isEn={isEn}
@@ -289,7 +289,7 @@ export function MarketOverviewView({
         />
       </Panel>
 
-      <Panel title={isEn ? "Risk / Watchlist" : "Risk / Watchlist"}>
+      <Panel title={isEn ? "Risk / Watchlist" : "风险 / 观察列表"}>
         <CompactRowsTable
           empty={isEn ? "No risk rows" : "暂无风险项"}
           isEn={isEn}

frontend/components/dashboard/scan-terminal/scan-terminal-client.ts

@@ -53,6 +53,7 @@ type AiCityStreamEvent = {
 type TerminalQueryOptions = {
   forceRefresh?: boolean;
   signal?: AbortSignal;
+  tradingRegion?: string;
 };
 
 type CityDetailQueryOptions = {
@@ -253,6 +254,7 @@ async function readAiCityForecastStream(
 async function getTerminal({
   forceRefresh = false,
   signal,
+  tradingRegion,
 }: TerminalQueryOptions = {}) {
   const params = new URLSearchParams({
     scan_mode: "tradable",
@@ -266,6 +268,9 @@ async function getTerminal({
     force_refresh: String(forceRefresh),
     skip_polymarket: "true",
   });
+  if (tradingRegion && tradingRegion !== "all") {
+    params.set("trading_region", tradingRegion);
+  }
   if (forceRefresh) {
     params.set("_ts", String(Date.now()));
   }

frontend/components/dashboard/scan-terminal/use-scan-terminal-query.ts

@@ -13,9 +13,11 @@ import type { ScanTerminalResponse } from "@/lib/dashboard-types";
 export function useScanTerminalQuery({
   isPro,
   proAccessLoading,
+  tradingRegion,
 }: {
   isPro: boolean;
   proAccessLoading: boolean;
+  tradingRegion?: string;
 }) {
   const {
     data: terminalData,
@@ -48,11 +50,12 @@ export function useScanTerminalQuery({
           scanTerminalClient.getTerminal({
             forceRefresh,
             signal,
+            tradingRegion,
           }),
         showLoading,
       });
     },
-    [isPro, proAccessLoading, run],
+    [isPro, proAccessLoading, run, tradingRegion],
   );
 
   useEffect(() => {
@@ -62,7 +65,7 @@ export function useScanTerminalQuery({
       return;
     }
     void fetchScanTerminal({ forceRefresh: false, showLoading: true });
-  }, [fetchScanTerminal, isPro, proAccessLoading, reset]);
+  }, [fetchScanTerminal, isPro, proAccessLoading, reset, tradingRegion]);
 
   const refreshScanTerminalManually = useCallback(() => {
     if (

web/scan_terminal_service.py

@@ -1230,6 +1230,16 @@ def _build_scan_terminal_payload_uncached(
 
     try:
         city_names = list(CITIES.keys())
+        region_filter = str(filters.get("trading_region") or "").strip().lower()
+        if region_filter and region_filter not in ("all", ""):
+            from web.scan_terminal_filters import market_region_from_tz_offset as _tz_region
+
+            def _city_in_region(city_name: str) -> bool:
+                city_meta = CITIES.get(city_name) or {}
+                tz = city_meta.get("tz", 0)
+                return _tz_region(tz)["key"] == region_filter
+
+            city_names = [c for c in city_names if _city_in_region(c)]
         max_workers = max(1, min(SCAN_TERMINAL_MAX_WORKERS, len(city_names)))
         city_results: List[Dict[str, Any]] = []
         failed_cities: List[str] = []