Fix Android WebView API access and mobile shell layout

front/src/lib/transfer-runtime.test.ts

@@ -0,0 +1,52 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  SAFE_TRANSFER_CHUNK_SIZE,
+  TRANSFER_PROGRESS_UPDATE_INTERVAL_MS,
+  shouldPublishTransferProgress,
+  resolveTransferChunkSize,
+} from './transfer-runtime';
+
+test('resolveTransferChunkSize prefers a conservative default across browsers', () => {
+  assert.equal(SAFE_TRANSFER_CHUNK_SIZE, 64 * 1024);
+  assert.equal(resolveTransferChunkSize(undefined), 64 * 1024);
+  assert.equal(resolveTransferChunkSize(8 * 1024), 8 * 1024);
+  assert.equal(resolveTransferChunkSize(256 * 1024), 64 * 1024);
+});
+
+test('shouldPublishTransferProgress throttles noisy intermediate updates but always allows forward progress after the interval', () => {
+  const initialTime = 10_000;
+
+  assert.equal(shouldPublishTransferProgress({
+    nextProgress: 1,
+    previousProgress: 0,
+    now: initialTime,
+    lastPublishedAt: initialTime,
+  }), false);
+
+  assert.equal(shouldPublishTransferProgress({
+    nextProgress: 1,
+    previousProgress: 0,
+    now: initialTime + TRANSFER_PROGRESS_UPDATE_INTERVAL_MS,
+    lastPublishedAt: initialTime,
+  }), true);
+});
+
+test('shouldPublishTransferProgress always allows terminal or changed progress states through immediately', () => {
+  const initialTime = 10_000;
+
+  assert.equal(shouldPublishTransferProgress({
+    nextProgress: 100,
+    previousProgress: 99,
+    now: initialTime,
+    lastPublishedAt: initialTime,
+  }), true);
+
+  assert.equal(shouldPublishTransferProgress({
+    nextProgress: 30,
+    previousProgress: 30,
+    now: initialTime + TRANSFER_PROGRESS_UPDATE_INTERVAL_MS * 10,
+    lastPublishedAt: initialTime,
+  }), false);
+});