feat: add configurable wind units

lib/store.ts

@@ -4,6 +4,8 @@ import { create } from "zustand";
 import { persist } from "zustand/middleware";
 import type { SelectedLocation } from "@/types/location";
 import type { Province } from "@/types/province";
+import type { WindSpeedUnit } from "@/types/units";
+import { DEFAULT_WIND_SPEED_UNIT } from "@/lib/weather-utils";
 
 type NotificationProvinceMode = "selected" | "manual";
 
@@ -16,6 +18,7 @@ interface WeatherStore {
   tomorrowBriefNotificationsEnabled: boolean;
   warningNotificationProvinceMode: NotificationProvinceMode;
   warningNotificationProvince: Province | null;
+  windSpeedUnit: WindSpeedUnit;
   toggleFavorite: (id: string) => void;
   selectStation: (id: string) => void;
   selectLocation: (location: SelectedLocation) => void;
@@ -24,6 +27,7 @@ interface WeatherStore {
   setTomorrowBriefNotificationsEnabled: (enabled: boolean) => void;
   setWarningNotificationProvinceMode: (mode: NotificationProvinceMode) => void;
   setWarningNotificationProvince: (province: Province | null) => void;
+  setWindSpeedUnit: (unit: WindSpeedUnit) => void;
 }
 
 export const useWeatherStore = create<WeatherStore>()(
@@ -37,6 +41,7 @@ export const useWeatherStore = create<WeatherStore>()(
       tomorrowBriefNotificationsEnabled: false,
       warningNotificationProvinceMode: "selected",
       warningNotificationProvince: null,
+      windSpeedUnit: DEFAULT_WIND_SPEED_UNIT,
       toggleFavorite: (id) =>
         set((state) => ({
           favorites: state.favorites.includes(id)
@@ -50,6 +55,7 @@ export const useWeatherStore = create<WeatherStore>()(
       setTomorrowBriefNotificationsEnabled: (enabled) => set({ tomorrowBriefNotificationsEnabled: enabled }),
       setWarningNotificationProvinceMode: (mode) => set({ warningNotificationProvinceMode: mode }),
       setWarningNotificationProvince: (province) => set({ warningNotificationProvince: province }),
+      setWindSpeedUnit: (unit) => set({ windSpeedUnit: unit }),
     }),
     { name: "wtr:preferences" },
   ),