diff --git a/app/test/keyboard_operability_test.dart b/app/test/keyboard_operability_test.dart
index 88ba543..b8b0a7d 100644
--- a/app/test/keyboard_operability_test.dart
+++ b/app/test/keyboard_operability_test.dart
@@ -157,7 +157,7 @@ void main() {
       addTearDown(tester.view.resetPhysicalSize);
       addTearDown(tester.view.resetDevicePixelRatio);
 
-      await LogStorageService.instance.writeLog({
+      await _pumpHistoryScreen(tester, {
         '2026-07-30': [
           const FoodEntry(
             id: 'has-id',
@@ -173,14 +173,6 @@ void main() {
         ],
       });
 
-      // HistoryScreen loads via a fire-and-forget Future in initState that the
-      // frame scheduler does not track, so settle inside runAsync.
-      await tester.runAsync(() async {
-        await tester.pumpWidget(const MaterialApp(home: HistoryScreen()));
-        await Future<void>.delayed(const Duration(milliseconds: 50));
-        await tester.pumpAndSettle();
-      });
-
       // Delete used to be bound only to onLongPress, which has no keyboard
       // equivalent whatsoever.
       expect(
@@ -198,7 +190,7 @@ void main() {
       addTearDown(tester.view.resetPhysicalSize);
       addTearDown(tester.view.resetDevicePixelRatio);
 
-      await LogStorageService.instance.writeLog({
+      await _pumpHistoryScreen(tester, {
         '2026-07-30': [
           const FoodEntry(
             time: '2026-07-30T09:00:00+02:00',
@@ -213,12 +205,6 @@ void main() {
         ],
       });
 
-      await tester.runAsync(() async {
-        await tester.pumpWidget(const MaterialApp(home: HistoryScreen()));
-        await Future<void>.delayed(const Duration(milliseconds: 50));
-        await tester.pumpAndSettle();
-      });
-
       // Delete stays id-only to avoid ambiguous time+desc matches, so the
       // control must be absent rather than present-and-failing.
       expect(find.byTooltip('Delete entry'), findsNothing);
@@ -228,3 +214,27 @@ void main() {
 
 /// A do-nothing month-navigation callback.
 void _noop() {}
+
+/// Seed [log] to disk, then pump [HistoryScreen] until its load has painted.
+///
+/// Both halves must happen inside `runAsync`, and that is the whole point of
+/// this helper. `LogStorageService` here is backed by a `FileDocumentStore`,
+/// so `writeLog` awaits real `dart:io`; awaited from the test body it waits
+/// on a `Future` the fake-async zone never completes, and the test hangs
+/// rather than failing -- reported only as "did not complete" once the suite
+/// times out. `HistoryScreen` then loads through a fire-and-forget `Future`
+/// in `initState`, which needs the same real clock to resolve.
+///
+/// The pumping is a bounded manual loop rather than `pumpAndSettle()`, which
+/// inside `runAsync` waits on a frame scheduler this screen never reports as
+/// idle -- another hang, with the same unhelpful symptom.
+Future<void> _pumpHistoryScreen(WidgetTester tester, DayLog log) async {
+  await tester.runAsync(() async {
+    await LogStorageService.instance.writeLog(log);
+    await tester.pumpWidget(const MaterialApp(home: HistoryScreen()));
+    for (var i = 0; i < 10; i++) {
+      await Future<void>.delayed(const Duration(milliseconds: 20));
+      await tester.pump();
+    }
+  });
+}
diff --git a/scripts/ci_mirror.sh b/scripts/ci_mirror.sh
index 3639d7d..2be99e0 100755
--- a/scripts/ci_mirror.sh
+++ b/scripts/ci_mirror.sh
@@ -85,7 +85,20 @@ run_precommit_all_files() {
 
 run_pytest_clean_venv() {
     log "pytest in the clean venv (mirrors the Tests workflow)"
-    "$VENV_DIR/bin/python" -m pytest "$@" || fail "pytest (clean requirements.txt venv)"
+    # Under xvfb-run, exactly as python-tests.yml does. The gate's real-Tk
+    # tests walk a focus ring via tk_focusNext, which consults mapped-ness
+    # and real focus: on a developer's live display the window never takes
+    # focus and the ring collapses to one widget, so TestRealFocusRing fails
+    # here while passing in CI. Mirroring the workflow's display is the whole
+    # point of this script -- without it the mirror reports red on a green
+    # tree, which is worse than not mirroring at all.
+    if ! command -v xvfb-run >/dev/null 2>&1; then
+        fail "xvfb-run is not on PATH (install xorg-server-xvfb); the real-Tk
+gate tests need the same virtual display the Tests workflow gives them"
+    fi
+    xvfb-run -a -s "-screen 0 1600x1200x24" \
+        "$VENV_DIR/bin/python" -m pytest "$@" \
+        || fail "pytest (clean requirements.txt venv)"
 }
 
 # Run flutter with the calling git hook's environment stripped.