Check effective release target membership

docs/roadmap/remediation.md

@@ -4,7 +4,7 @@
 `3c405f0524ec6c098d00d4e371abbace7648d446`.
 **Scope:** ReleaseKit adoption commits after `721365e`, including CLI version
 reporting, local release wiring, CI delivery, tests, and documentation.
-**Status:** R1 addressed; R2–R3 pending. The findings below describe the reviewed
+**Status:** R1–R2 addressed; R3 pending. The findings below describe the reviewed
 baseline; completed work is recorded under Resolution Record.
 
 ## Architecture Assessment
@@ -136,3 +136,8 @@ matrix.
   trailing arguments. Non-help usage errors retain status `2`. Regression tests
   reproduced both defects before the fix; `go test ./internal/cli ./cmd/audita`
   passed afterward. The CLI contract reflects ordinary help behavior.
+- **R2:** Delivery targets are compared as sets using the standard library.
+  Regression cases reject either missing Linux target concealed by duplicates
+  and an unintended target, while accepting equivalent reordered/repeated lists.
+  The cases reproduced the faulty membership behavior before the fix;
+  `go test ./scripts` passed afterward.

scripts/release_test.go

@@ -2,6 +2,7 @@ package scripts
 
 import (
 	"encoding/json"
+	"maps"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -147,6 +148,27 @@ func TestReleaseKitProfileDeclaresProductAndDeliverySettings(t *testing.T) {
 	}
 }
 
+func TestReleaseKitTargetMembership(t *testing.T) {
+	want := []string{"linux/amd64", "linux/arm64"}
+	for _, test := range []struct {
+		name    string
+		targets []string
+		match   bool
+	}{
+		{"missing amd64", []string{"linux/arm64", "linux/arm64"}, false},
+		{"missing arm64", []string{"linux/amd64", "linux/amd64"}, false},
+		{"additional target", []string{"linux/amd64", "linux/arm64", "darwin/arm64"}, false},
+		{"reordered", []string{"linux/arm64", "linux/amd64"}, true},
+		{"repeated", []string{"linux/amd64", "linux/arm64", "linux/amd64"}, true},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			if got := sameMembers(test.targets, want); got != test.match {
+				t.Fatalf("target membership for %q = %t, want %t", test.targets, got, test.match)
+			}
+		})
+	}
+}
+
 type releaseTestLayout struct {
 	repo     string
 	caller   string
@@ -257,15 +279,15 @@ func hasAdjacentArguments(args []string, first, second string) bool {
 }
 
 func sameMembers(got, want []string) bool {
-	if len(got) != len(want) {
-		return false
-	}
+	gotSet := make(map[string]struct{}, len(got))
 	for _, value := range got {
-		if !containsArgument(want, value) {
-			return false
-		}
+		gotSet[value] = struct{}{}
 	}
-	return true
+	wantSet := make(map[string]struct{}, len(want))
+	for _, value := range want {
+		wantSet[value] = struct{}{}
+	}
+	return maps.Equal(gotSet, wantSet)
 }
 
 func hasKey(values map[string]string, key string) bool {