<overview LangGraph's human-in-the-loop patterns let you pause graph execution, surface data to users, and resume with their input: - — pauses execution, surfaces a value to the caller - — resumes execution, providing the value back to - Checkpointer — required to save state while paused - Thread ID — required to identify which paused execution to resume </overview --- Requirements Three things are required for interrupts to work: 1. Checkpointer — compile with (dev) or (prod) 2. Thread ID — pass to every / call 3. JSON-serializable payload — the value passed to must be JSON-serializable ---…