Synchronous component wiring, captured before its stages or mappers run.
WHY: mounts have no public run wrapper to bind their private integration state.
Runs on the actual protected scope before stage callbacks, stream start or item selection.
Factory construction effects precede this boundary; returned asynchronous work is refused.
Synchronous component wiring, captured before its stages or mappers run. WHY: mounts have no public run wrapper to bind their private integration state.