Subgraph Identification in LangGraph Visualizations

[YassinNouh21]

Enhance LangGraph visualization capabilities to explicitly represent subgraphs within the parent graph without requiring custom styling. Subgraphs should be visually distinct by default, using a clear and intuitive format (e.g., enclosing subgraph nodes within a labeled boundary or grouping them under a "subgraph" section). This feature would provide users with a natural way to identify and interpret subgraph structures within complex workflows.

[vbarda]

@YassinNouh21 have you tried running

from IPython.display import display, Image
display(Image(graph.get_graph(xray=True).draw_mermaid_png()))

this should already render subgraphs (via xray parameter)