feat(omp-rpc): added error handling and history bounds to RPC client

- Added error handling callbacks (on_protocol_error, on_listener_error) and error history tracking (protocol_errors, listener_errors properties) for RPC failures.
- Added max_event_history and max_stderr_chunks parameters to bound retained history in long-lived hosts, preventing unbounded memory growth.
- Added assistant_text_with_thinking() and message_text_with_thinking() helper functions for backward compatibility with thinking block inclusion.
- Improved error correlation for id-less parse/unknown-command failures to waiting requests and changed prompt scheduling failures to raise instead of timing out.
- Refactored event dispatch to _dispatch_listeners() with exception handling and error recording for robust listener failure management.

python/omp-rpc/tests/test_protocol.py

@@ -8,6 +8,7 @@ from omp_rpc import (
     SessionState,
     TodoReminderEvent,
     assistant_text,
+    assistant_text_with_thinking,
     parse_notification,
     parse_session_state,
 )
@@ -157,6 +158,18 @@ class ProtocolParsingTests(unittest.TestCase):
         self.assertEqual(notification.todos[0].content, "Map tools")
         self.assertEqual(notification.todos[0].status, "pending")
 
+    def test_assistant_text_excludes_thinking_by_default(self) -> None:
+        message = {
+            "role": "assistant",
+            "content": [
+                {"type": "thinking", "thinking": "internal"},
+                {"type": "text", "text": "visible"},
+            ],
+        }
+
+        self.assertEqual(assistant_text(message), "visible")
+        self.assertEqual(assistant_text_with_thinking(message), "internalvisible")
+
 
 if __name__ == "__main__":
     unittest.main()