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>

components/SessionSync.tsx

@@ -0,0 +1,27 @@
+import { useEffect, useRef } from "react";
+import { AppState, type AppStateStatus } from "react-native";
+
+import { useSession } from "@/contexts/AuthContext";
+
+/** Refetch auth session when the app returns to the foreground. */
+export function SessionSync() {
+  const { refetch } = useSession();
+  const wasBackgrounded = useRef(false);
+
+  useEffect(() => {
+    const subscription = AppState.addEventListener("change", (nextState: AppStateStatus) => {
+      if (nextState === "background" || nextState === "inactive") {
+        wasBackgrounded.current = true;
+        return;
+      }
+
+      if (nextState !== "active" || !wasBackgrounded.current) return;
+      wasBackgrounded.current = false;
+      void refetch();
+    });
+
+    return () => subscription.remove();
+  }, [refetch]);
+
+  return null;
+}