Drop the lease write's findings, the controller's artifacts-gone and the issuing gate (issue 1126, B9)

ADR 0590 supersedes the lease write: mesh-grants says no lease event any
more, so the watchman's lease-altered and removal-failed findings and
their row had nothing to hear. The ended controller's consumers are
removed as hand acts, so their deletion is no consumer lost; only the
one on DEAD_LETTER_NOTICES is still read, since its removal hands the
notices to the watchman. The builder hears artifacts-gone from the
artifact sweep seat alone, and mesh-enrolment's tokens no longer report
an issuing gate that nothing can turn off.

Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL

modules/mesh-delivery-builder/cmd/mesh-delivery-builder/main.go

@@ -188,8 +188,8 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
 		}
 		defer cc.Stop()
 	}
-	// The controller says artifacts-gone when its take-in found a key's blob gone (issue 1937): the builder's durable
-	// consumer on EVENTS, made by the controller from the manifest's consumes. Where it is not there yet the builder says
+	// The seat mesh-artifact-sweep says artifacts-gone when it found a key's blob gone (issue 1937, ADR 0571 §2): the
+	// builder's durable consumer on EVENTS, made by the grants part from the manifest's consumes. Where it is not there yet the builder says
 	// so; it still asks held at its start and at every module value.
 	switch cons, err := cred.EventConsumer(ctx, js, eventsStream); {
 	case err != nil:

modules/mesh-delivery-builder/cmd/mesh-delivery-builder/stored.go

@@ -15,8 +15,8 @@ import (
 	"mesh-delivery-builder/internal/build"
 )
 
-// eventsStream is the stream every module's and role's events are on, where the controller makes the builder's durable
-// consumer of artifacts-gone (mesh-controller internal/broker EventsStream).
+// eventsStream is the stream every module's and role's events are on, where the grants part makes the builder's durable
+// consumer of artifacts-gone (mesh-sdk buscompose EventsStream).
 const eventsStream = "EVENTS"
 
 // SeatHeld is the seat mesh-artifact-sweep's verb held (ADR 0571 §2).
@@ -27,8 +27,7 @@ type toolCaller func(key string, body any) (json.RawMessage, error)
 
 // storedVia is build.Builder's Stored: it asks the seat mesh-artifact-sweep's `held` (novox/hq ADR 0571 §2, issue 1937)
 // and answers the references the store no longer holds. One it could not ask about, with none gone, is an error: the key
-// is then left done, and the controller's take-in still refuses a gone blob. The controller's `held` is not asked: it
-// is no longer a fallback (issue 1955).
+// is then left done, and asked again at the next module value or artifacts-gone.
 func storedVia(call toolCaller) func(ctx context.Context, references []string) ([]string, error) {
 	return func(_ context.Context, references []string) ([]string, error) {
 		body := map[string]any{"references": references}