feat(mobile): improve pairing invite journey

apps/mobile/src/__tests__/lib/pairedUnlockSeen.test.ts

@@ -0,0 +1,18 @@
+jest.mock("@react-native-async-storage/async-storage", () => ({
+    getItem: jest.fn(), setItem: jest.fn(), removeItem: jest.fn(),
+}));
+
+import AsyncStorage from "@react-native-async-storage/async-storage";
+import { clearPairedUnlockSeen, hasSeenPairedUnlock, markPairedUnlockSeen } from "../../lib/pairedUnlockSeen";
+
+describe("paired unlock state", () => {
+    it("is scoped to both account and couple", async () => {
+        (AsyncStorage.getItem as jest.Mock).mockResolvedValue("true");
+        await hasSeenPairedUnlock("user-a", "couple-a");
+        await markPairedUnlockSeen("user-a", "couple-a");
+        await clearPairedUnlockSeen("user-a", "couple-a");
+        expect(AsyncStorage.getItem).toHaveBeenCalledWith("paired_unlock_seen_user-a_couple-a");
+        expect(AsyncStorage.setItem).toHaveBeenCalledWith("paired_unlock_seen_user-a_couple-a", "true");
+        expect(AsyncStorage.removeItem).toHaveBeenCalledWith("paired_unlock_seen_user-a_couple-a");
+    });
+});