f8d2365795
Replace hasattr() duck-typing with isinstance() checks for DiscordAdapter in gateway/run.py, add TypedDict for IMAGEGEN_BACKENDS in tools_config.py, properly type fal_client getattr'd callables in image_generation_tool.py, fix dict[str, object] → Callable annotation in approval.py, use isinstance(BaseModel) in web_tools.py, capture _message_handler to local in base.py, rename shadowed list_distributions parameter in batch_runner.py, and remove dead queue_message branch.