chore: log notifier failures in RAG; notify on MCP atexit failure; add TUI notification tests

tests/test_tui_notifications.py

@@ -0,0 +1,49 @@
+import pytest
+
+from pentestagent.interface import notifier
+from pentestagent.interface.tui import PentestAgentTUI
+from pentestagent.workspaces.manager import WorkspaceManager
+
+
+def test_tui_set_target_persist_failure_emits_notification(monkeypatch, tmp_path):
+    captured = []
+
+    def cb(level, message):
+        captured.append((level, message))
+
+    notifier.register_callback(cb)
+
+    # Make set_last_target raise
+    def bad_set_last(self, name, value):
+        raise RuntimeError("disk error")
+
+    monkeypatch.setattr(WorkspaceManager, "set_last_target", bad_set_last)
+
+    tui = PentestAgentTUI()
+    # Call the internal method to set target
+    tui._set_target("/target 10.0.0.1")
+
+    assert len(captured) >= 1
+    assert any("Failed to persist last target" in m for _, m in captured)
+
+
+def test_tui_apply_target_display_failure_emits_notification(monkeypatch):
+    captured = []
+
+    def cb(level, message):
+        captured.append((level, message))
+
+    notifier.register_callback(cb)
+
+    tui = PentestAgentTUI()
+
+    # Make _apply_target_display raise
+    def bad_apply(self, target):
+        raise RuntimeError("ui update failed")
+
+    monkeypatch.setattr(PentestAgentTUI, "_apply_target_display", bad_apply)
+
+    tui._set_target("/target 1.2.3.4")
+
+    assert len(captured) >= 1
+    assert any("Failed to update target display" in m or "Failed to update target" in m for _, m in captured)