feat(t208): close candidate decision feedback loop

backend-api/internal/platform/migration/runner_test.go

@@ -27,8 +27,8 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Up() error = %v", err)
 	}
-	if applied != 5 {
-		t.Fatalf("Up() applied = %d, want 5", applied)
+	if applied != 6 {
+		t.Fatalf("Up() applied = %d, want 6", applied)
 	}
 	assertStatuses(t, runner, map[int64]bool{
 		1: true,
@@ -36,6 +36,7 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 		3: true,
 		4: true,
 		5: true,
+		6: true,
 	})
 
 	applied, err = runner.Up(context.Background())
@@ -54,7 +55,8 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 		2: true,
 		3: true,
 		4: true,
-		5: false,
+		5: true,
+		6: false,
 	})
 
 	applied, err = runner.Up(context.Background())
@@ -70,6 +72,7 @@ func TestRunnerSupportsUpStatusDownAndIdempotentUp(t *testing.T) {
 		3: true,
 		4: true,
 		5: true,
+		6: true,
 	})
 }