Reuse or establish library context. One assignment covers a named site, web scope, feed set or related sources, with the caller's question, dates, bounds and output location.
Use orchflows:orch-work once with the resolved collection guidance, evidence contract and available readers:
Collect the assigned evidence within its bounds, apply the Make guidance and return the evidence handoff. Work without child agents.
When the caller gathers, return the native worker handle and expected evidence location immediately. Otherwise await this worker and return its actual outcome.