Scope folder realtime refreshes by device

tests/android-folder-realtime-refresh.test.ts

@@ -0,0 +1,26 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+
+test("android folder activity refreshes on matching device-scoped conversation updates", async () => {
+  const source = await readFile(
+    new URL("../android/app/src/main/java/com/hyzq/boss/ConversationFolderActivity.java", import.meta.url),
+    "utf8",
+  );
+
+  assert.match(
+    source,
+    /private String folderDeviceId;/,
+    "expected folder activity to keep track of the folder device id for realtime filtering",
+  );
+  assert.match(
+    source,
+    /String payloadDeviceId = event\.payload\.optString\("deviceId", ""\)\.trim\(\);/,
+    "expected folder activity to inspect device-scoped realtime payloads",
+  );
+  assert.match(
+    source,
+    /payloadDeviceId\.equals\(folderDeviceId\)/,
+    "expected folder activity to reload when the event targets its device",
+  );
+});