Return the lines the composition found on the way (a node not counted as on the network) in Rendered.Said and Declared.Said (review round 1, finding 6). The test failed first; the suite is 1258 tests in 1.05 s

go/compose/network.go

@@ -3,6 +3,7 @@ package compose
 import (
 	"errors"
 	"fmt"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -50,6 +51,16 @@ func (c *composer) suffix() string {
 // internalName is a node's name inside the mesh.
 func (c *composer) internalName(node string) string { return node + "." + c.suffix() }
 
+// saidBeside is the lines already said and then every line the composer kept, once each, in the order they were found.
+func (c *composer) saidBeside(lines []string) []string {
+	for _, l := range c.said {
+		if !slices.Contains(lines, l) {
+			lines = append(lines, l)
+		}
+	}
+	return lines
+}
+
 // overlayRange is the range the mesh allocates node addresses from: the adopted tunnel's first (novox/hq ADR 0105),
 // then the range genesis was told, then the default.
 func (c *composer) overlayRange() string {

go/compose/node.go

@@ -227,6 +227,7 @@ func (c *composer) declaration(nodeName string, mode Mode) (Declared, error) {
 	for _, l := range left {
 		out.Said = append(out.Said, l.String())
 	}
+	out.Said = c.saidBeside(out.Said)
 	return out, nil
 }
 

go/compose/node_test.go

@@ -382,3 +382,37 @@ func TestTheRestOfTheMeshReadsEachOtherNodesKeptBuild(t *testing.T) {
 		t.Errorf("a node keeping a build that offers nothing still offers: %v %v", providers(w, "s3-bucket"), err)
 	}
 }
+
+// Round 1, finding 6: the nodes the composition did not count as on the network are returned, said, not lost.
+func TestANodeNotCountedAsOnTheNetworkIsSaidInTheResult(t *testing.T) {
+	in := aMesh(t)
+	in.Catalogue["rival-one"] = catalogue.Manifest{Module: "rival-one", Version: "1", Claims: []catalogue.Claim{{Name: "the-seat", Scope: catalogue.ScopeNode}}}
+	in.Catalogue["rival-two"] = catalogue.Manifest{Module: "rival-two", Version: "1", Claims: []catalogue.Claim{{Name: "the-seat", Scope: catalogue.ScopeNode}}}
+	laptop := nodeOf(t, &in, "laptop")
+	laptop.Assigned = append(laptop.Assigned, "rival-one", "rival-two")
+	said := func(lines []string) bool {
+		for _, l := range lines {
+			if strings.HasPrefix(l, "laptop is not counted as on the network") {
+				return true
+			}
+		}
+		return false
+	}
+	got, err := Render(in, "anchor", Foreseeing)
+	if err != nil || !said(got.Said) {
+		t.Errorf("rendered: %v %v", got.Said, err)
+	}
+	d, _, err := Compose(in, "anchor")
+	if err != nil || !said(d.Said) {
+		t.Errorf("declared: %v %v", d.Said, err)
+	}
+	n := 0
+	for _, l := range d.Said {
+		if strings.HasPrefix(l, "laptop is not counted") {
+			n++
+		}
+	}
+	if n != 1 {
+		t.Errorf("said %d times: %v", n, d.Said)
+	}
+}

go/compose/render.go

@@ -122,5 +122,7 @@ func (c *composer) render(nodeName string, mode Mode) (Rendered, error) {
 	}
 	r.BusMembership = c.in.BusMemberships[nodeName]
 	out.Rendering = r
+	// And what the composition found on the way, which the controller writes to its log: a machine not counted as on the network.
+	out.Said = c.saidBeside(out.Said)
 	return out, nil
 }