Revert the revert of G's mesh-sdk merge (#191): G's sdk stands again over reader release 3

Main reverted G's half merge (#189, reverted by 8afc3eb in #191) and then took the reader release's S1-S5, which
copied G's code. G's form holds where they differ (process_bus.go, seats.go, state.go and their tests); the
release's kept names stay so main's callers keep building: SeatViewPrefix beside SeatReadPrefix, and QueueInvoke's
empty strings on not-ok (with its test TestQueueInvoke). The tree differs from G's head f30dee54 only by those and
the release's two tests (objects cap option, seat states and stream kinds).

Builds: design 47 G (the milestone's sdk part, as at f30dee54)

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h

go/process/module.go

@@ -52,6 +52,7 @@ func (a Account) DialOptions(opts ...nats.Option) []nats.Option {
 // Dial connects as the module's own principal and opens JetStream on the connection. The caller closes the
 // connection.
 func (a Account) Dial(opts ...nats.Option) (*nats.Conn, jetstream.JetStream, error) {
+	OwnBuild()
 	nc, err := nats.Connect(a.URL, a.DialOptions(opts...)...)
 	if err != nil {
 		return nil, nil, fmt.Errorf("connecting to the bus: %w", err)