Static OP_ID_SEQ 

static OP_ID_SEQ: AtomicU64

Process-wide monotonic source of node op_ids. The LLM-emitted RTDL does not carry a usable op_id (it defaults to 0), so pilot assigns one itself while parsing: a globally-unique, auto-incrementing id starting at 1. “Global” = across every plan/round in this pilot process, so each node in the live task-graph forest is uniquely addressable for steering and result correlation — not merely unique within one plan.