Node ID Migration Notes

ComfyUI frontend now normalizes local node IDs to the branded NodeId string type at internal boundaries. Serialized workflows and API payloads may still contain numeric IDs, but litegraph node and link fields should be treated as strings after they enter the frontend.

Extension authors should avoid numeric comparisons against node IDs. In particular, subgraph boundary sentinels are exposed as branded string IDs:

• SUBGRAPH_INPUT_ID serializes from -10
• SUBGRAPH_OUTPUT_ID serializes from -20

Use the exported constants where available, or normalize both sides to strings before comparing legacy values.