cli: module issue — deliver a module its scoped broker account (ADR 0048)

'module issue <module> --node <m>' looks up the module's emits/consumes from
the catalogue, ensures the bus exchanges exist, creates its scoped account
(CreateModuleAccount), and seals an amqps {url,fingerprint} to the node as the
module's broker own-secret — the same delivery as 'builder issue', now generic.

Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF

cmd/mesh-control/main.go

@@ -135,6 +135,7 @@ func usage() {
   module list                    what modules this mesh knows about
   module moved <name> <commit>   the source has a newer commit than the mesh built
   module forget <name>           remove one, unless a node is running it
+  module issue <name> --node <m> a broker account for a module, scoped to its emits and consumes
   status [--json]                what is wrong, what is quiet, and what is out of date
   board [--listen ADDR]          the same three questions, as a page that holds nothing
   api --issuer URL [--listen A]  assign and unassign over http, for a surface that is not here