feat: add global weather support

lib/imgw-current-api.ts

@@ -1,5 +1,6 @@
 import { toNumber } from "@/lib/weather-utils";
 import type { ImgwCurrentWeather, RawImgwHybridWeatherResponse, RawImgwHybridWeatherRow } from "@/types/imgw-current";
+import type { WeatherRegion } from "@/types/weather-region";
 
 const STALE_TEN_MINUTE_THRESHOLD_MS = 2 * 60 * 60 * 1000;
 
@@ -104,6 +105,12 @@ export function normalizeImgwCurrentWeather(payload: RawImgwHybridWeatherRespons
 
   return {
     coverage: fullRow?.row.Type === "Type_Ten_Minutes" ? "full" : fullRow ? "hourly" : "precipitation-only",
+    region: "PL",
+    source: "IMGW",
+    sourceLabel: "IMGW Hybrid",
+    sourceType: fullRow ? "hybrid" : "model",
+    isOfficial: true,
+    fetchedAt: new Date().toISOString(),
     measuredAt: row.measuredAt,
     temperature: toCelsius(row.row.Temperature),
     feelsLike: toCelsius(row.row.Chill),
@@ -126,3 +133,10 @@ export async function fetchImgwCurrentWeather(latitude: number, longitude: numbe
   if (!response.ok) throw new Error("Nie udało się pobrać bieżącej analizy IMGW Hybrid.");
   return normalizeImgwCurrentWeather(await response.json() as RawImgwHybridWeatherResponse);
 }
+
+export async function fetchCurrentWeather(latitude: number, longitude: number, region: WeatherRegion, signal?: AbortSignal) {
+  const params = new URLSearchParams({ latitude: String(latitude), longitude: String(longitude), region });
+  const response = await fetch(`/api/current-weather?${params}`, { signal });
+  if (!response.ok) throw new Error("Nie udało się pobrać bieżących warunków pogodowych.");
+  return await response.json() as ImgwCurrentWeather | null;
+}