release: v2.0.6

Redesign the desktop workspace with task sidebars, live filters, clearer settings, and an accessible update dialog.

Harden encrypted backup imports, configuration persistence, history retention, queue snapshots, shutdown recovery, and update installation ordering.

Publish verified Windows artifacts and refreshed English documentation.

tests/serialized-runner.test.js

@@ -0,0 +1,32 @@
+const { describe, it } = require('node:test');
+const assert = require('node:assert/strict');
+
+describe('serialized runner', () => {
+  it('flush waits for an already running save and later work stays ordered', async () => {
+    const { createSerializedRunner } = require('../lib/serialized-runner');
+    let releaseFirst;
+    const calls = [];
+    const runner = createSerializedRunner(async (value) => {
+      calls.push(`start:${value}`);
+      if (value === 'first') await new Promise((resolve) => { releaseFirst = resolve; });
+      calls.push(`end:${value}`);
+      return value;
+    });
+
+    const first = runner.run('first');
+    await new Promise((resolve) => setImmediate(resolve));
+    const second = runner.run('second');
+    let flushed = false;
+    const flush = runner.flush().then(() => { flushed = true; });
+    await new Promise((resolve) => setImmediate(resolve));
+    assert.equal(flushed, false);
+    assert.deepEqual(calls, ['start:first']);
+
+    releaseFirst();
+    assert.equal(await first, 'first');
+    assert.equal(await second, 'second');
+    await flush;
+    assert.equal(flushed, true);
+    assert.deepEqual(calls, ['start:first', 'end:first', 'start:second', 'end:second']);
+  });
+});