check relays asynchronously

src/main.py

@@ -742,6 +742,7 @@ def handle_settings(password_manager: PasswordManager) -> None:
             print(colored("Vault locked. Please re-enter your password.", "yellow"))
             password_manager.unlock_vault()
             password_manager.start_background_sync()
+            getattr(password_manager, "start_background_relay_check", lambda: None)()
             pause()
         elif choice == "13":
             handle_display_stats(password_manager)
@@ -779,6 +780,7 @@ def display_menu(
         display_fn()
         pause()
     password_manager.start_background_sync()
+    getattr(password_manager, "start_background_relay_check", lambda: None)()
     while True:
         fp, parent_fp, child_fp = getattr(
             password_manager,
@@ -796,6 +798,7 @@ def display_menu(
             password_manager.lock_vault()
             password_manager.unlock_vault()
             password_manager.start_background_sync()
+            getattr(password_manager, "start_background_relay_check", lambda: None)()
             continue
         # Periodically push updates to Nostr
         if (
@@ -819,6 +822,7 @@ def display_menu(
             password_manager.lock_vault()
             password_manager.unlock_vault()
             password_manager.start_background_sync()
+            getattr(password_manager, "start_background_relay_check", lambda: None)()
             continue
         password_manager.update_activity()
         if not choice:

src/password_manager/manager.py

@@ -925,17 +925,6 @@ class PasswordManager:
                 parent_seed=getattr(self, "parent_seed", None),
             )
 
-            if hasattr(self.nostr_client, "check_relay_health"):
-                healthy = self.nostr_client.check_relay_health(MIN_HEALTHY_RELAYS)
-                if healthy < MIN_HEALTHY_RELAYS:
-                    print(
-                        colored(
-                            f"Only {healthy} relay(s) responded with your latest event."
-                            " Consider adding more relays via Settings.",
-                            "yellow",
-                        )
-                    )
-
             logger.debug("Managers re-initialized for the new fingerprint.")
 
         except Exception as e:
@@ -984,6 +973,35 @@ class PasswordManager:
         self._sync_thread = threading.Thread(target=_worker, daemon=True)
         self._sync_thread.start()
 
+    def start_background_relay_check(self) -> None:
+        """Check relay health in a background thread."""
+        if (
+            hasattr(self, "_relay_thread")
+            and self._relay_thread
+            and self._relay_thread.is_alive()
+        ):
+            return
+
+        def _worker() -> None:
+            try:
+                if getattr(self, "nostr_client", None) and hasattr(
+                    self.nostr_client, "check_relay_health"
+                ):
+                    healthy = self.nostr_client.check_relay_health(MIN_HEALTHY_RELAYS)
+                    if healthy < MIN_HEALTHY_RELAYS:
+                        print(
+                            colored(
+                                f"Only {healthy} relay(s) responded with your latest event."
+                                " Consider adding more relays via Settings.",
+                                "yellow",
+                            )
+                        )
+            except Exception as exc:
+                logger.warning(f"Relay health check failed: {exc}")
+
+        self._relay_thread = threading.Thread(target=_worker, daemon=True)
+        self._relay_thread.start()
+
     def sync_index_from_nostr_if_missing(self) -> None:
         """Retrieve the password database from Nostr if it doesn't exist locally."""
         index_file = self.fingerprint_dir / "seedpass_entries_db.json.enc"

src/tests/test_auto_sync.py

@@ -23,6 +23,7 @@ def test_auto_sync_triggers_post(monkeypatch):
         lock_vault=lambda: None,
         unlock_vault=lambda: None,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
 
     called = False

src/tests/test_background_relay_check.py

@@ -0,0 +1,23 @@
+import time
+from types import SimpleNamespace
+from pathlib import Path
+import sys
+
+sys.path.append(str(Path(__file__).resolve().parents[1]))
+
+from password_manager.manager import PasswordManager
+from constants import MIN_HEALTHY_RELAYS
+
+
+def test_background_relay_check_runs_async(monkeypatch):
+    pm = PasswordManager.__new__(PasswordManager)
+    called = {"args": None}
+    pm.nostr_client = SimpleNamespace(
+        check_relay_health=lambda min_relays: called.__setitem__("args", min_relays)
+        or min_relays
+    )
+
+    pm.start_background_relay_check()
+    time.sleep(0.05)
+
+    assert called["args"] == MIN_HEALTHY_RELAYS

src/tests/test_cli_invalid_input.py

@@ -47,6 +47,7 @@ def _make_pm(called, locked=None):
         lock_vault=lock,
         unlock_vault=unlock,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
     return pm, locked
 

src/tests/test_inactivity_lock.py

@@ -35,6 +35,7 @@ def test_inactivity_triggers_lock(monkeypatch):
         lock_vault=lock_vault,
         unlock_vault=unlock_vault,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
 
     monkeypatch.setattr(main, "timed_input", lambda *_: "")
@@ -72,6 +73,7 @@ def test_input_timeout_triggers_lock(monkeypatch):
         lock_vault=lock_vault,
         unlock_vault=unlock_vault,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
 
     responses = iter([TimeoutError(), ""])

src/tests/test_menu_navigation.py

@@ -31,6 +31,7 @@ def _make_pm(calls):
         lock_vault=lambda: None,
         unlock_vault=lambda: None,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
 
 

src/tests/test_menu_options.py

@@ -25,6 +25,7 @@ def _make_pm(calls):
         lock_vault=lambda: None,
         unlock_vault=lambda: None,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
 
 

src/tests/test_menu_search.py

@@ -24,6 +24,7 @@ def _make_pm(called):
         lock_vault=lambda: None,
         unlock_vault=lambda: None,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
     return pm