Add explicit force replacement workflow

internal/cli/root_test.go

@@ -180,6 +180,32 @@ func TestExecuteRunDryRun(t *testing.T) {
 	}
 }
 
+func TestExecuteRunForceDryRunReportsWithoutWriting(t *testing.T) {
+	sourceRoot := t.TempDir()
+	destinationRoot := t.TempDir()
+	testutil.WriteSourceBundle(t, sourceRoot, "", testutil.BundleOptions{})
+	if err := os.WriteFile(filepath.Join(destinationRoot, "unmanaged.txt"), []byte("old"), 0o600); err != nil {
+		t.Fatalf("write unmanaged file: %v", err)
+	}
+	configPath := testutil.WriteMinimalLocalConfig(t, sourceRoot, destinationRoot)
+
+	var stdout, stderr bytes.Buffer
+	code := Execute(context.Background(), []string{"run", "--config", configPath, "--force", "--dry-run"}, &stdout, &stderr)
+
+	if code != exitOK {
+		t.Fatalf("exit code = %d, want %d; stderr = %q", code, exitOK, stderr.String())
+	}
+	if !strings.Contains(stdout.String(), "action=force_replace") {
+		t.Fatalf("stdout = %q, want force_replace", stdout.String())
+	}
+	if _, err := os.Stat(filepath.Join(destinationRoot, "unmanaged.txt")); err != nil {
+		t.Fatalf("unmanaged file stat error = %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(destinationRoot, storage.StateFileName)); !os.IsNotExist(err) {
+		t.Fatalf("state stat error = %v, want not exist", err)
+	}
+}
+
 func TestExecuteRunRejectsExtraPositionalArgs(t *testing.T) {
 	var stdout, stderr bytes.Buffer