move settings to one icon mobile

src/routes/weather/week/[location]/+page.svelte

@@ -12,6 +12,8 @@
 		storedVariablePrefs
 	} from '$lib/stores/settings';
 
+	import { buildLocationRoute } from '$lib/utils/location';
+
 	import { ChartContainer } from '$lib/components/charts';
 
 	import {
@@ -76,6 +78,10 @@
 		storedLocation.set(data.location);
 	});
 
+	// Lets the strip's side buttons hand over to the archive / seasonal outlook
+	// for the same place once their range is exhausted.
+	let locationRoute = $derived(buildLocationRoute(location));
+
 	let mounted = $state(false);
 	let loading = $state(true);
 	let loadError = $state<FriendlyWeatherError | null>(null);
@@ -318,6 +324,7 @@
 					onExtend={() => (forecastDays = 15)}
 					canExtendPast={pastDays < 3}
 					onExtendPast={() => (pastDays = 3)}
+					{locationRoute}
 				/>
 			{/if}