Join: mesh-config's whole test reads the subject the runtime publishes on from the manifest

The seat definition names mesh-config's renamed, retiring and retired on its own stream
(mesh.stream, A1c), and the runtime publishes an event the module's stream carries
there; the test assumed EVENTS (mesh.mod) for every event and failed at the joined heads.

Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig

modules/mesh-config/cmd/mesh-config/whole_integration_test.go

@@ -22,6 +22,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"slices"
 	"strings"
 	"sync"
 	"testing"
@@ -32,8 +33,10 @@ import (
 
 	"git.novox.be/novox/mesh-contracts/go/seats/meshconfig"
 	oc "git.novox.be/novox/mesh-contracts/go/seats/operatorchannel"
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
 	"git.novox.be/novox/mesh-sdk/go/delivery"
 	"git.novox.be/novox/mesh-sdk/go/health"
+	"git.novox.be/novox/mesh-sdk/go/process"
 	"git.novox.be/novox/mesh-sdk/go/testbus"
 )
 
@@ -452,7 +455,13 @@ func (p *player) conforms(key string, into any, subject func(holder string) stri
 		if err := dec.Decode(into); err != nil {
 			p.t.Errorf("the published %s %s does not match the seat's definition: %v", key, s.Body, err)
 		}
-		if got, want := "mesh.mod."+Module+".event."+s.Key, subject(Module); got != want {
+		// The runtime publishes an event its manifest's own stream carries on that stream (mesh.stream), any other on
+		// EVENTS (mesh.mod).
+		got := "mesh.mod." + Module + ".event." + s.Key
+		if streamCarries(p.t, s.Key) {
+			got = process.ModuleStreamSubject(Module, s.Key)
+		}
+		if want := subject(Module); got != want {
 			p.t.Errorf("%s is published on %s, the definition names %s", key, got, want)
 		}
 	}
@@ -788,3 +797,22 @@ func TestConfigWholeRenamesAndRetiresAgainstTheBus(t *testing.T) {
 	p2.conforms(EventRetired, &meshconfig.RetiredHolderEvent{}, meshconfig.HolderSubjectRetired)
 	eventually(t, "the retirement is dropped", func() bool { _, ok := p2.get(RetiringState, "radio.band"); return !ok })
 }
+
+// streamCarries says whether the module's manifest names event among its own streams' events.
+func streamCarries(t *testing.T, event string) bool {
+	t.Helper()
+	raw, err := os.ReadFile(filepath.Join("..", "..", "module.json"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	m, err := catalogue.Decode(raw)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, st := range m.Streams {
+		if slices.Contains(st.Events, event) {
+			return true
+		}
+	}
+	return false
+}