Decode manifests in tests and pin the mesh-sdk that no longer holds the judge

Issue 1585, S18/S19: the judge's tests live in mesh-delivery now, so an assertion that only tested judging goes
and every test that builds a manifest decodes it.

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

internal/broker/modstreams.go

@@ -108,7 +108,7 @@ func (s ModuleStream) Stream() Stream {
 
 // QueueOwner is the one process of a module that is the durable consumer of one of its own work-queue
 // streams (novox/hq ADR 0436 §1, §2, §6): named in that process's bus.queues, and checked at registration
-// to be the only one (catalogue.WorkQueueStreamProblems).
+// to be the only one (the indexer's judge).
 type QueueOwner struct {
 	// Process is the process resource's id — its bus account's name, with the node and module (novox/hq ADR
 	// 0436 §2).