diff --git a/scripts/windows-smoke.mjs b/scripts/windows-smoke.mjs
index c071157..c4aa55c 100644
--- a/scripts/windows-smoke.mjs
+++ b/scripts/windows-smoke.mjs
@@ -312,6 +312,69 @@ try {
   record('global hotkeys reach the page', /not found/i.test(msg) ? 'n/a' : 'fail', msg);
 }
 
+// 10. Tray / badge / taskbar / thumbbar / media-controls commands (#4, #7):
+// the state they set is only visible to a person on a desktop, but each must
+// accept what cinny sends and leave the app working. Then reset everything.
+const calls = [
+  ['set_badge_count', { count: 3 }],
+  ['set_tray_unread', { unread: true }],
+  ['set_call_active', { active: true }],
+  ['set_tray_call_state', { active: true, muted: true, deafened: false }],
+  ['set_thumbbar', { active: true, muted: true, deafened: false }],
+  ['set_thumbbar', { active: true, muted: false, deafened: true }],
+  ['set_smtc_call_state', { active: true, muted: true }],
+  ['set_taskbar_progress', { status: 'normal', progress: 40 }],
+  ['set_taskbar_progress', { status: 'indeterminate', progress: null }],
+  ['set_jump_list', { items: [{ title: 'Smoke room', uri: 'matrix:r/lotus-smoke:example.org' }] }],
+  ['set_tray_update_ready', { version: '9.9.9' }],
+  ['flash_window', {}],
+  ['get_tray_dnd', {}],
+  ['has_tray_host', {}],
+  // reset
+  ['set_badge_count', { count: 0 }],
+  ['set_tray_unread', { unread: false }],
+  ['set_tray_call_state', { active: false, muted: false, deafened: false }],
+  ['set_thumbbar', { active: false, muted: false, deafened: false }],
+  ['set_smtc_call_state', { active: false, muted: false }],
+  ['set_call_active', { active: false }],
+  ['set_taskbar_progress', { status: 'none', progress: null }],
+  ['set_jump_list', { items: [] }],
+  ['set_tray_update_ready', { version: null }],
+];
+const failures = [];
+for (const [cmd, args] of calls) {
+  // eslint-disable-next-line no-await-in-loop
+  const err = await page
+    .evaluate(
+      async ([c, a]) => {
+        try {
+          await window.__TAURI_INTERNALS__.invoke(c, a);
+          return null;
+        } catch (e) {
+          return String(e).slice(0, 120);
+        }
+      },
+      [cmd, args],
+    )
+    .catch((e) => `page gone: ${String(e).slice(0, 80)}`);
+  if (err) failures.push(`${cmd}(${JSON.stringify(args)}): ${err}`);
+}
+const alive = await page.evaluate(() => document.title !== undefined).catch(() => false);
+// Without a desktop there is no Explorer shell: the tray icon, the taskbar
+// overlay badge and the thumbnail toolbar can't exist, and Windows answers
+// E_FAIL / E_NOTIMPL. cinny ignores those errors; the app must just survive.
+const SHELL_ONLY = /^(set_badge_count|set_tray_unread|set_tray_call_state|set_tray_update_ready|set_thumbbar)\(/;
+const real = interactive ? failures : failures.filter((f) => !SHELL_ONLY.test(f));
+record(
+  'tray, badge, taskbar, thumbbar and media-control commands',
+  real.length === 0 && alive ? 'pass' : 'fail',
+  real.length
+    ? real.join(' | ')
+    : `${calls.length - failures.length}/${calls.length} calls ok${
+        failures.length ? `, ${failures.length} shell-only calls n/a without a desktop` : ''
+      }; app still responsive: ${alive}`,
+);
+
 await page.screenshot({ path: `${OUT}/02-end.png` }).catch(() => undefined);
 
 writeFileSync(`${OUT}/results.json`, JSON.stringify(results, null, 2));