Add inactivity lock feature

src/tests/test_auto_sync.py

@@ -14,10 +14,14 @@ def test_auto_sync_triggers_post(monkeypatch):
     pm = SimpleNamespace(
         is_dirty=True,
         last_update=time.time() - 0.2,
+        last_activity=time.time(),
         nostr_client=SimpleNamespace(close_client_pool=lambda: None),
         handle_add_password=lambda: None,
         handle_retrieve_entry=lambda: None,
         handle_modify_entry=lambda: None,
+        update_activity=lambda: None,
+        lock_vault=lambda: None,
+        unlock_vault=lambda: None,
     )
 
     called = False

src/tests/test_inactivity_lock.py

@@ -0,0 +1,35 @@
+import time
+from types import SimpleNamespace
+from pathlib import Path
+import pytest
+
+import sys
+
+sys.path.append(str(Path(__file__).resolve().parents[1]))
+
+import main
+
+
+def test_inactivity_triggers_lock(monkeypatch):
+    locked = {"locked": False, "unlocked": False}
+
+    pm = SimpleNamespace(
+        is_dirty=False,
+        last_update=time.time(),
+        last_activity=time.time() - 1.0,
+        nostr_client=SimpleNamespace(close_client_pool=lambda: None),
+        handle_add_password=lambda: None,
+        handle_retrieve_entry=lambda: None,
+        handle_modify_entry=lambda: None,
+        update_activity=lambda: None,
+        lock_vault=lambda: locked.update(locked=True) or None,
+        unlock_vault=lambda: locked.update(unlocked=True) or None,
+    )
+
+    monkeypatch.setattr("builtins.input", lambda _: "5")
+
+    with pytest.raises(SystemExit):
+        main.display_menu(pm, sync_interval=1000, inactivity_timeout=0.1)
+
+    assert locked["locked"]
+    assert locked["unlocked"]