From 7e66b026b9b843cd7f672d01486c7e309760f25c Mon Sep 17 00:00:00 2001
From: "2569718930@qq.com" <2569718930@qq.com>
Date: Mon, 27 Apr 2026 00:54:24 +0800
Subject: [PATCH] feat: implement AI city forecast streaming hook and utility
 functions for scan terminal

---
 .../dashboard/scan-terminal/city-card-decision-utils.ts  | 9 +--------
 .../dashboard/scan-terminal/use-ai-city-card-data.ts     | 4 ++--
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/frontend/components/dashboard/scan-terminal/city-card-decision-utils.ts b/frontend/components/dashboard/scan-terminal/city-card-decision-utils.ts
index 98eff311..34583fd1 100644
--- a/frontend/components/dashboard/scan-terminal/city-card-decision-utils.ts
+++ b/frontend/components/dashboard/scan-terminal/city-card-decision-utils.ts
@@ -281,14 +281,7 @@ export function pickMarketBucketForWeatherCenter(
   }
   if (roundedMatch) return roundedMatch;
   if (!nearest) return isReasonableFallback(selectedBucket) ? selectedBucket : null;
-  const comparable = normalizeMarketComparableTemp(expectedHigh, tempSymbol, nearest);
-  const unit = String(nearest.unit || "").toUpperCase();
-  const maxReasonableDelta = unit === "F" ? 16 : 8;
-  if (
-    comparable != null &&
-    Number.isFinite(nearestDelta) &&
-    nearestDelta <= maxReasonableDelta
-  ) {
+  if (Number.isFinite(nearestDelta) && isReasonableFallback(nearest)) {
     return nearest;
   }
   return isReasonableFallback(selectedBucket) ? selectedBucket : null;
diff --git a/frontend/components/dashboard/scan-terminal/use-ai-city-card-data.ts b/frontend/components/dashboard/scan-terminal/use-ai-city-card-data.ts
index 40be974b..7dd6dba8 100644
--- a/frontend/components/dashboard/scan-terminal/use-ai-city-card-data.ts
+++ b/frontend/components/dashboard/scan-terminal/use-ai-city-card-data.ts
@@ -16,7 +16,7 @@ import { normalizeCityKey } from "./decision-utils";
 
 const AI_CITY_FORECAST_CACHE_PREFIX = "polyWeather_aiCityForecast_v3";
 const AI_CITY_FORECAST_CACHE_TTL_MS = 60 * 60 * 1000;
-const CITY_MARKET_SCAN_CACHE_PREFIX = "polyWeather_cityMarketScan_v2";
+const CITY_MARKET_SCAN_CACHE_PREFIX = "polyWeather_cityMarketScan_v3";
 const CITY_MARKET_SCAN_CACHE_TTL_MS = 10 * 60 * 1000;
 const pendingAiCityForecastRequests = new Map<
   string,
@@ -504,7 +504,7 @@ export function useCityMarketScan({
     const cacheKey = buildStorageKey(CITY_MARKET_SCAN_CACHE_PREFIX, [
       normalizeCityKey(detailCityName),
       detail.local_date || "",
-      "lite",
+      "full",
     ]);
     let cancelled = false;
     if (detail.market_scan) {