Resolve the forge's manifest against both artifacts it now builds

The catalogue's forge also builds its npm registry since hq ADR 0251, so the three
forge tests resolved it against half its build and failed on main as on every branch.

internal/catalogue/foundation_manifests_test.go

@@ -177,11 +177,19 @@ func TestTheForgeHoldsTheNpmAndGitSeats(t *testing.T) {
 // wrong on every node whose assignment differs, and wrong for a second reason on a node given the
 // port (ADR 0100). Composed through the whole path, because what proves the placeholder resolves
 // in an `env` at all is a declaration, not a manifest.
+// forgeBuilt is every artifact the forge's manifest builds: its code, and since hq ADR 0251 the npm
+// registry it serves beside it. A manifest resolves only against all of what it asked to be built.
+func forgeBuilt() []Built {
+	var out []Built
+	for _, name := range []string{"code", "npm-registry"} {
+		out = append(out, Built{Name: name, Kind: ArtifactBundle,
+			Reference: ArtifactStoreScheme + "gitea/" + name + "/blobs/" + bundleDigest, Digest: bundleDigest})
+	}
+	return out
+}
+
 func TestTheForgesOwnAddressFollowsThePortTheNodeGaveIt(t *testing.T) {
-	forge, err := catalogueManifest(t, "gitea").Resolve([]Built{{
-		Name: "code", Kind: ArtifactBundle,
-		Reference: ArtifactStoreScheme + "gitea/code/blobs/" + bundleDigest, Digest: bundleDigest,
-	}})
+	forge, err := catalogueManifest(t, "gitea").Resolve(forgeBuilt())
 	if err != nil {
 		t.Fatalf("the forge's manifest does not resolve against its own build: %v", err)
 	}
@@ -234,10 +242,7 @@ func TestTheForgesOwnAddressFollowsThePortTheNodeGaveIt(t *testing.T) {
 func declaredGiteaSsh(t *testing.T, given map[int]int) map[string]any {
 	t.Helper()
 	forge := catalogueManifest(t, "gitea")
-	resolved, err := forge.Resolve([]Built{{
-		Name: "code", Kind: ArtifactBundle,
-		Reference: ArtifactStoreScheme + "gitea/code/blobs/" + bundleDigest, Digest: bundleDigest,
-	}})
+	resolved, err := forge.Resolve(forgeBuilt())
 	if err != nil {
 		t.Fatalf("the forge's manifest does not resolve against its own build: %v", err)
 	}