Redesign mobile time clock, add shortcuts, and improve account management.

Add iOS Shortcuts/Siri intents, local send-reminder notifications, stable
client picker with last-client defaults, account refresh/remove, and softer
session handling on unauthorized API responses.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/trpc-errors.ts

@@ -0,0 +1,8 @@
+import { TRPCClientError } from "@trpc/client";
+
+export function isUnauthorizedError(error: unknown): boolean {
+  return (
+    error instanceof TRPCClientError &&
+    (error.data?.code === "UNAUTHORIZED" || error.message === "UNAUTHORIZED")
+  );
+}