Add purpose and demand model extension

infospace/agent/global-agent-brief.md

@@ -5,8 +5,8 @@
 This brief summarizes the current canon service surface for agents.
 
 - Infospace slug: `canon`
-- Artifact count: 29
-- Retrieval index items: 29
+- Artifact count: 34
+- Retrieval index items: 34
 - Primary confidence command: `make validate`
 - Refresh generated indexes and views with: `make index`
 - Refresh agent briefs and interface templates with: `make agent-briefs`
@@ -32,7 +32,7 @@ This brief summarizes the current canon service surface for agents.
 - **Actor vs Subject vs Principal**: Use actor for the acting entity in a context, subject for the entity a policy evaluates, and principal for the authenticated identity bound to access decisions.
 - **Organization Role vs AccessRole vs CARING role**: Organization roles describe responsibility or position; access roles describe permissions; CARING roles classify access-governance needs and analysis.
 - **Policy vs Control vs Evidence**: Policy states intent or rule, control implements or enforces that rule, and evidence records why the claim should be trusted.
-- **Intent vs Scope vs Purpose**: Intent captures why an actor wants something, scope bounds what is included, and purpose captures consumer demand or use case pressure on the repo.
+- **Intent vs Scope vs Purpose**: Intent captures why a producer or consumer exists, scope bounds producer ownership and promises, and purpose captures consumer demand anchored in consumer intent.
 
 ## Consumption Notes