Add StatsManager for single display

src/tests/test_stats_screen.py

@@ -2,6 +2,7 @@ import sys
 from types import SimpleNamespace
 from pathlib import Path
 import pytest
+from seedpass.core.stats_manager import StatsManager
 
 sys.path.append(str(Path(__file__).resolve().parents[1]))
 
@@ -12,6 +13,7 @@ def _make_pm():
     return SimpleNamespace(
         display_stats=lambda: print("stats"),
         start_background_sync=lambda: None,
+        stats_manager=StatsManager(),
     )
 
 
@@ -57,3 +59,32 @@ def test_live_stats_triggers_background_sync(monkeypatch):
     main._display_live_stats(pm)
 
     assert called["sync"] >= 1
+
+
+def test_stats_display_only_once(monkeypatch, capsys):
+    pm = _make_pm()
+    monkeypatch.setattr(main, "get_notification_text", lambda *_: "")
+
+    events = [TimeoutError(), KeyboardInterrupt()]
+
+    def fake_input(*_args, **_kwargs):
+        raise events.pop(0)
+
+    monkeypatch.setattr(main, "timed_input", fake_input)
+    main._display_live_stats(pm, interval=0.01)
+    out = capsys.readouterr().out
+    assert out.count("stats") == 1
+
+
+def test_stats_display_resets_after_exit(monkeypatch, capsys):
+    pm = _make_pm()
+    monkeypatch.setattr(main, "get_notification_text", lambda *_: "")
+    monkeypatch.setattr(
+        main,
+        "timed_input",
+        lambda *_args, **_kwargs: (_ for _ in ()).throw(KeyboardInterrupt()),
+    )
+    main._display_live_stats(pm)
+    main._display_live_stats(pm)
+    out = capsys.readouterr().out
+    assert out.count("stats") == 2