Easier Conversation Reset and Input Updates for the File Agent Node

The File Agent node now includes a Reset Conversation button that clears the conversation history and code generation plan while preserving node connections, file inputs, and any previously generated code. This is useful when the agent gets stuck or when you need to substantially change the node's behavior.

File input configuration is also now always accessible in the UI, making it easier to add, remove, or swap input files without interrupting the rest of your workflow.