Name the commit, build and rollout on the assignment and the assignments on the rollout (issue 1095)

A send that records what a machine was sent writes, in the assignment of each module it carried a build of, the build, what it published, the commit, the rollout that sent it and since when: filled where the assignment names nothing, replaced when the commit moved, never blanked by a push by hand. A plan's sends are made as the plan, so they name it, and the plan lists the assignments each send changed with the build and commit before and after, the builds it carried and the steps taken. The builds, plans and node verbs say the links. node.sent_builds is written and read as before; SentBuilds from the assignments follows with the delivery that drops the column. Acceptance 10 is a test that enters by a merge heard and cut into a plan and writes no key by hand.

cmd/mesh-controller/build.go

@@ -152,6 +152,8 @@ func buildFrom(result link.BuildResult) inventory.Build {
 		Path: result.Path,
 		// What it was made from (novox/hq issue 280): two builds with one are one build.
 		SourceFingerprint: result.SourceFingerprint,
+		// And its reuse key (novox/hq ADR 0350 §1), which the chain names (ADR 0408 §1).
+		ReuseKey: result.ReuseKey,
 	}
 	// When it was asked, which is what orders it against another build of the same module
 	// (novox/hq 04-ISSUES/219) — not when it was heard.
@@ -254,6 +256,18 @@ func buildsCommand(ctx context.Context, args []string) error {
 		for _, made := range b.Made {
 			fmt.Printf("    %-10s %s\n", made.Kind, made.Reference)
 		}
+		// What it published and under what reuse key (novox/hq ADR 0408 §1).
+		if p := b.Published; p != nil {
+			if p.Artifact != "" {
+				fmt.Printf("    published  %s\n", p.Artifact)
+			}
+			if p.Package != nil {
+				fmt.Printf("    published  %s@%s\n", p.Package.Name, p.Package.Version)
+			}
+		}
+		if b.ReuseKey != "" {
+			fmt.Printf("    reuse key  %s\n", b.ReuseKey)
+		}
 		if !b.Worked() {
 			// The builder's own first line. The whole failure is often a build log, and printing
 			// it here would bury every other row.