Let the controller ask an issued credential's tool in its own name, and seal it again over a remade pair (hq issue 526, ADR 0305)

The bus left the controller out of the caller-named grants, so issued could never reach plex's tool; the
controller is now granted exactly the tools of offers whose software issues the credential, composed from
the records, so the installer's first user list is unchanged. A pair remade on a key change or accepted by
hand kept the issued stamp and was never sealed again; those writes now clear it.

internal/inventory/secrets.go

@@ -58,7 +58,9 @@ const (
 // **Remade when either end's sealing key changes.** A node that rejoined generated a new key and
 // can no longer open what was sealed to the old one, so keeping the blob would deliver something
 // unreadable for ever. The new secret reaches both ends in the same push, which is the only
-// moment they can be changed together.
+// moment they can be changed together. A remade value is the mesh's, whatever the row held: its
+// origin says made and it carries no stamp, so a value a provider's software issued is sealed to it
+// again at the provider's next ask (novox/hq ADR 0305 §5) rather than read as still held.
 func (i *Inventory) SecretFor(ctx context.Context, name, consumer, consumerModule, provider, local string) (
 	Secret, error) {
 	consumerKey, err := i.SealingKeyOf(ctx, consumer)
@@ -121,7 +123,8 @@ func (i *Inventory) SecretFor(ctx context.Context, name, consumer, consumerModul
 		   for_consumer = excluded.for_consumer, for_provider = excluded.for_provider,
 		   consumer_key = excluded.consumer_key, provider_key = excluded.provider_key,
 		   created_at = now(),
-		   operator_sealed = excluded.operator_sealed, operator_key = excluded.operator_key`,
+		   operator_sealed = excluded.operator_sealed, operator_key = excluded.operator_key,
+		   origin = 'made', generation = null`,
 		name, consumerNode.ID, consumerModule, providerNode.ID,
 		made.ForConsumer, made.ForProvider, made.ConsumerKey, made.ProviderKey, forOperator, operatorKey, local)
 	if err != nil {
@@ -202,7 +205,7 @@ func (i *Inventory) AcceptSecretForPair(ctx context.Context, name, consumer, con
 		 on conflict (name, local, consumer, consumer_module, provider) do update set
 		   for_consumer = excluded.for_consumer, for_provider = excluded.for_provider,
 		   consumer_key = excluded.consumer_key, provider_key = excluded.provider_key,
-		   created_at = now(), origin = excluded.origin,
+		   created_at = now(), origin = excluded.origin, generation = null,
 		   operator_sealed = excluded.operator_sealed, operator_key = excluded.operator_key`,
 		name, consumerNode.ID, consumerModule, providerNode.ID,
 		sealed.ForConsumer, sealed.ForProvider, sealed.ConsumerKey, sealed.ProviderKey,