The provisioner client's account stays named while the client is held: a held client keeps the node's handing (issue 774)

provisionerAccount reads the user of the client's process from this pass's plan, and a client held as its stub (or
carried as it runs) composes no process: on ace, 2026-11-04 01:29 to 01:33, the node's own composition named no
account, the node-engine refused every filled write, and no module was handed (postgres's consumers, restic, power).
A node now carries the account its client runs as (Node.RunningProvisioner: its own composition's account as it runs,
else the user of the client's running process), and a placed client that composes none this pass keeps it. A row holds
the client in the provisioned mesh, both ways: the account stays and restic keeps its filled files; both were lost
before.

Claude-Session: https://claude.ai/code/session_01JG73KG7AfSdh6FP8VrBqCn

internal/compose/input.go

@@ -224,6 +224,11 @@ type Node struct {
 	// so it is left to the node: Compositions composes it as a stub (Stub) and carries its resources as they run, each
 	// after the resource it runs after (issue 1126). Nil composes every folded module from its manifest, as before.
 	RunsOwn *delivery.Composed
+	// RunningProvisioner is the account the provisioner's client runs as on this node now, read from what runs (its own
+	// composition's provisioner account, else the user of the provisioner client's running process), empty when nothing
+	// says it. A client held as its stub this pass composes no process, so the node keeps this account and its handing
+	// (provisionerAccount; issue 774: ace, 2026-11-04 01:29, every filled write refused and postgres's consumers unhanded).
+	RunningProvisioner string
 	// Held is the modules refused alone on this node, each composed as what runs of it (Carried, in Kept; its Stub when
 	// nothing of it runs) so the rest is composed (novox/hq issue 1126): none of a held module's own composition is in what
 	// Compositions answers, so the node keeps what it last applied of it; one whose resources the node's own runs