Restart what reads a secret family member when the member is given again (issue 405)

secretsReadBy looked only at secrets declared by name, so a container
mounting a member kept the value it started with.

internal/catalogue/declaration.go

@@ -1076,7 +1076,7 @@ func (r Resolution) compose(with Rendering, owner map[string]string,
 			// credential the mesh had replaced, because its manifest restarted it on its
 			// environment file and nobody had thought to name the credential too. Composed here so
 			// no manifest has to say it, for a container or a daemon that names the secret's path.
-			if reads := secretsReadBy(copied, m); len(reads) > 0 {
+			if reads := secretsReadBy(copied, m, with.Needed[m.Module]); len(reads) > 0 {
 				copied["restart-on"] = withRestartOn(copied["restart-on"], reads)
 			}
 			// **A version prepares its state before it runs** (novox/hq ADR 0135). Derived from the
@@ -2392,7 +2392,12 @@ func portOfEndpoint(values map[string]any, ports map[string]int) {
 // — named in its volumes, its environment or its env-files by the secret's placed path — as
 // restart-on ids. Nothing for other shapes, and nothing for a scheduled or run-once process, which
 // the host refuses a restart-on for (it runs again anyway, and reads the file afresh).
-func secretsReadBy(resource map[string]any, m Manifest) []string {
+//
+// **A member of a secret family given here is read the same way** (novox/hq issue 405, ADR 0283 decision 6):
+// it is an own secret placed at its own path, and a container that mounted it would keep the value it
+// started with when the operator gives it again. given is the module's own secrets sealed to this
+// machine; a member not given is no file, so nothing restarts on it.
+func secretsReadBy(resource map[string]any, m Manifest, given map[string]string) []string {
 	kind := fmt.Sprint(resource["type"])
 	if kind != "container" && kind != "process" {
 		return nil
@@ -2404,9 +2409,18 @@ func secretsReadBy(resource map[string]any, m Manifest) []string {
 	for _, key := range []string{"volumes", "env", "env-file"} {
 		mentioned = append(mentioned, stringsIn(resource[key])...)
 	}
+	paths := map[string]string{}
+	for name, own := range m.OwnSecrets.Plain() {
+		paths[name] = own.Path
+	}
+	for name, sealed := range given {
+		if own, family, ok := m.OwnSecrets.Lookup(name); ok && family != "" && sealed != "" {
+			paths[name] = own.Path
+		}
+	}
 	var out []string
-	for _, name := range sortedKeys(m.OwnSecrets.Plain()) {
-		path := m.OwnSecrets[name].Path
+	for _, name := range sortedKeys(paths) {
+		path := paths[name]
 		if path == "" {
 			continue
 		}