The node-engine reads each assignment by the build its node keeps and says a seat pass in its answer (issue 1966, ADR 0660)

Claude-Session: https://claude.ai/code/session_01NcbgfFfQ4Z9UE5jK32PmE5

internal/compose/node.go

@@ -60,7 +60,8 @@ type Declared struct {
 	ForeseenPorts []string
 	// CoreBoxesWanted are the core credentials whose box the send must ask the vault for and keep.
 	CoreBoxesWanted []CoreBoxWanted
-	// Passes are the seats the mesh would pass on, for the caller to record, and Said the lines found while composing.
+	// Passes are the seats composed as passed to their only claimant (ADR 0660), recorded by nobody here, and Said the lines found
+	// while composing, the passes among them.
 	Passes Passes
 	Said   []string
 }
@@ -228,6 +229,8 @@ func (c *composer) declaration(nodeName string, mode Mode) (Declared, error) {
 		return Declared{}, err
 	}
 	out.Passes = passes
+	// A pass is composed, never recorded (ADR 0660 §4): the answer says it, with what two claimants leave unsettled.
+	out.Said = append(out.Said, passes.Lines()...)
 	for _, l := range left {
 		out.Said = append(out.Said, l.String())
 	}