A merge on the controller's own path never shares a batch with one that waits for the delivery's word (hq ADR 0276, decided during the build)

internal/inventory/plans.go

@@ -79,6 +79,15 @@ type PlanBatch struct {
 	ClosesAt time.Time `json:"closes_at"`
 	AtMost   time.Time `json:"at_most"`
 	Behind   string    `json:"behind,omitempty"`
+	// Own says the batch holds merges on the controller's own path, whose walk waits for nobody's word: such
+	// a merge never shares a batch with one that waits for mesh-delivery's (ADR 0276, decided during the
+	// build, 2026-10-10).
+	Own bool `json:"own,omitempty"`
+}
+
+// OwnPath says the record is a batch of merges on the controller's own path.
+func (p Plan) OwnPath() bool {
+	return p.Delivery != nil && p.Delivery.Batch != nil && p.Delivery.Batch.Own
 }
 
 // CommitOf is the commit of a repository the walk carries; empty when it carries none of it.