Add XTerm handoff runtime diagnostics

src/cthulhu/input_event_manager.py

@@ -227,6 +227,14 @@ class InputEventManager:
             "paused": self._paused,
             "secure_input_active": self._secure_input_active,
             "suspended_xterm_script_present": self._scriptWithSuspendedGrabsForXterm is not None,
+            "xterm_focus_monitor_active": self._xtermFocusHandlerId != 0,
+            "xterm_recovery_timer_active": self._xtermRecoverySourceId != 0,
+            "last_ewmh_active_window_id": (
+                hex(self._lastEwmhActiveWindowId)
+                if self._lastEwmhActiveWindowId is not None
+                else ""
+            ),
+            "last_ewmh_xterm_match": self._lastEwmhXtermMatch,
             "last_input_event_present": self._last_input_event is not None,
             "last_non_modifier_key_event_present": self._last_non_modifier_key_event is not None,
         }

tests/test_runtime_state_snapshot.py

@@ -80,6 +80,10 @@ class RuntimeStateSnapshotTests(unittest.TestCase):
         manager._grabbed_bindings = {10: object(), 11: object()}
         manager._paused = True
         manager._scriptWithSuspendedGrabsForXterm = object()
+        manager._xtermFocusHandlerId = 17
+        manager._xtermRecoverySourceId = 23
+        manager._lastEwmhActiveWindowId = 0x1400010
+        manager._lastEwmhXtermMatch = False
         manager._last_input_event = object()
         manager._last_non_modifier_key_event = None
 
@@ -91,6 +95,10 @@ class RuntimeStateSnapshotTests(unittest.TestCase):
         self.assertEqual(1, snapshot["mapped_keysyms"])
         self.assertEqual(2, snapshot["grabbed_bindings"])
         self.assertTrue(snapshot["suspended_xterm_script_present"])
+        self.assertTrue(snapshot["xterm_focus_monitor_active"])
+        self.assertTrue(snapshot["xterm_recovery_timer_active"])
+        self.assertEqual("0x1400010", snapshot["last_ewmh_active_window_id"])
+        self.assertFalse(snapshot["last_ewmh_xterm_match"])
         self.assertFalse(snapshot["last_non_modifier_key_event_present"])
 
     def test_script_manager_snapshot_reports_cache_counts(self) -> None: