Enforce explicit responsibility attribution

- document responsibility attribution as a project-wide invariant
- prevent inferred ownership in protocol rendering
- add negative gold regression for false responsibility assignment
- document future responsibility evidence and attribution model
- record the real-life benchmark finding

docs/output-views.md

@@ -78,6 +78,13 @@ Rendered protocol language should normally match the dominant language of the
 source transcript or consolidated meeting knowledge unless an explicit output
 language is requested.
 
+Responsibility attribution is a cross-cutting invariant for every Output View.
+A renderer may name a person, team or department as responsible only when the
+input explicitly contains that assignment or acceptance. Discussion,
+expertise, objection, suggestion, speaker adjacency, organizational
+assumptions and department mentions do not establish ownership. If
+responsibility is unclear, render it as open rather than guessing.
+
 ## Working Protocol
 
 Suggested filename: `working_protocol.md`