nx_wflow_data_gate.nx

nx_wflow_data_gate.nx -- R8 DATA-PASSING gate: run-scoped variables on the event-sourced ledger. Trigger-event fields auto-bind as vars (WFVAR records) -> {key} placeholders substitute into ANY step arg at execution -> set-var writes DERIVED vars (its own arg substitutes first) -> LAST write wins -> unknown or unclosed placeholder = LOUD step failure, run FAILED (the send_merge law) -> vars reach a FORKED organ argv (argecho receives the event's values). ONE fork. license_tier: ORIGINAL expect_exit: 0