Two store-backed tests rotted because nothing runs the check (novox/hq issue 177)

The converged-declaration guard still expected `hosts` on a container after c978aa7 took it off
every container, and the adopted-anchor fixture reported no outward link after ADR 0140 made a
filter depend on one. Both failed under `make check` since 2026-09-28/30; the build does not run the
check, so the mesh never saw it. The guard is re-captured with the change named — a field an older
host never sees is the one change it permits — and the fixture reports a link as a real host does.

cmd/mesh-controller/adopting_test.go

@@ -91,6 +91,10 @@ func reportsReaching(t *testing.T, open *stores, reachable []link.Reach, held ..
 	if _, err := (link.Enrolment{Inventory: open.inventory}).Heard(ctx, link.Report{
 		Node: "anchor", Applied: []string{"hello-web.x"}, Declared: digestOf(body),
 		Firewall: "ufw", Held: held, Reachable: reachable,
+		// A machine says which of its links face outside on every apply (novox/hq ADR 0140), and a
+		// filter is not sent to one that has not. The anchor reports one, as a real host does; this
+		// fixture lacked it from 2026-09-28 and nothing ran the test (issue 177).
+		Outward: []string{"eth0"},
 	}); err != nil {
 		t.Fatal(err)
 	}

cmd/mesh-controller/sendable_test.go

@@ -47,7 +47,12 @@ func composed(t *testing.T, open *stores, node string) sendable {
 // aMesh's laptop with the private network taken off it, so nothing in the declaration is random:
 // what changes this string is a change to what a converged machine is sent, which is the thing an
 // older host would refuse.
-const convergedBefore = `{"declaration":1,"resources":[{"content":"hello","id":"hello-web.page","path":"/var/lib/hello-web/index.html","type":"file"},{"hosts":["anchor.internal:10.77.0.1"],"id":"hello-web.server","image":"registry.example/hello@sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","name":"hello-web","type":"container"},{"id":"hello-web.served","path":"/var/lib/hello-web","type":"directory"}]}`
+//
+// Re-captured 2026-10-01 (novox/hq issue 177): c978aa7 took `hosts` off every container — a
+// machine's own resolver knows the mesh's names now — and left this string carrying it, so the
+// guard failed for a day and nothing ran it. A field an older host never sees is the one change
+// this guard permits; a field it would refuse is the one it exists to catch.
+const convergedBefore = `{"declaration":1,"resources":[{"content":"hello","id":"hello-web.page","path":"/var/lib/hello-web/index.html","type":"file"},{"id":"hello-web.server","image":"registry.example/hello@sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","name":"hello-web","type":"container"},{"id":"hello-web.served","path":"/var/lib/hello-web","type":"directory"}]}`
 
 func TestAConvergedDeclarationIsByteForByteWhatItWas(t *testing.T) {
 	open := aMesh(t)