Update __init__.py

Author: beacoder

python_agent_harness/__init__.py

@@ -5,7 +5,7 @@
 from .models import AgentMode, Message, ToolCall, ToolSpec
 from .session import Session
 
-__version__ = "1.5.5.3"
+__version__ = "1.5.5.4"
 
 __all__ = [
     "Session",