feat: add configurable wind units

app/api/notifications/tomorrow-brief/route.ts

@@ -4,6 +4,7 @@ import { fetchMeteoWarnings } from "@/lib/server-warnings";
 import { getPushSubscriptions, hasSentTomorrowBrief, markTomorrowBriefSent, removePushSubscription } from "@/lib/push-store";
 import { isWebPushConfigured, sendTomorrowBriefNotification } from "@/lib/push-service";
 import { buildTomorrowWeatherBrief } from "@/lib/weather-brief";
+import { DEFAULT_WIND_SPEED_UNIT } from "@/lib/weather-utils";
 
 export const runtime = "nodejs";
 
@@ -76,6 +77,7 @@ export async function GET(request: Request) {
         countyTeryt: subscription.countyTeryt,
         locationName: subscription.locationName ?? "wtr.",
         language: subscription.language,
+        windSpeedUnit: subscription.windSpeedUnit ?? DEFAULT_WIND_SPEED_UNIT,
         now,
       });
       if (!brief) {