Card: task instruction and stakeholders (the paper's terms)

README.md

@@ -30,9 +30,9 @@ Each is the original task of its scenario, exactly as in the full set:
 ```
 cases/<scenario>/
   engagement.json    title, what the scenario runs (model gateway, simulated services)
-  briefs/L0..L3.md   the task as the agent receives it, at four levels of detail (L0 says most, L3 least)
+  briefs/L0..L3.md   the task instruction the agent receives, at four levels (L0 says most, L3 least)
   world/             the customer's environment: documents, data, the system as found
-  npcs.json          the customer's people: what each knows, and what it costs to ask
+  npcs.json          the customer's stakeholders: what each knows, and the contact cost of asking
   build_world.py     builds the agent's workspace
   gen.py, ...        generators for the data and for the held-out production traffic
   services/          simulated customer services, where a scenario has them