Client↔server interrupt transport for Hooks v2 server-owned events.
Serialize a hook invocation request for interrupt().
Parse a hook invocation interrupt payload when present.
Serialize a hook invocation response for Command(resume=...).
Validate a resumed hook response against the outstanding request.
Return whether value looks like a Hooks v2 invocation interrupt.
Request sent for a server-owned hook invocation.
Response returned for a server-owned hook invocation.
LangGraph interrupt envelope for a server-owned hook invocation.
