fix(shell): return to the saved page before the period takes the url

src/lib/period.svelte.ts

@@ -69,6 +69,7 @@ class Period {
     const range = rangeFromUrl(url) ?? stored() ?? periodOf(today(), view);
     this.start = range.start;
     this.end = range.end;
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(range));
     this.ready = true;
   }