fix(wfctl): preserve iac provider plan metadata

cmd/wfctl/plugin_install.go

@@ -1362,6 +1362,7 @@ type installedPluginJSON struct {
 	Tags         []string                     `json:"tags,omitempty"`
 	Type         string                       `json:"type,omitempty"`
 	Capabilities *installedPluginCapabilities `json:"capabilities,omitempty"`
+	IaCProvider  *RegistryIaCProvider         `json:"iacProvider,omitempty"`
 }
 
 type installedPluginCapabilities struct {
@@ -1395,6 +1396,7 @@ func writeInstalledManifest(path string, m *RegistryManifest) error {
 		Tier:        m.Tier,
 		Tags:        m.Keywords,
 		Type:        m.Type,
+		IaCProvider: m.IaCProvider,
 	}
 	if m.Capabilities != nil {
 		pj.Capabilities = &installedPluginCapabilities{

cmd/wfctl/plugin_install_e2e_test.go

@@ -478,6 +478,54 @@ func TestInstalledManifestPreservesCLICommandsAndBuildHooks(t *testing.T) {
 	}
 }
 
+// TestInstalledManifestPreservesIaCProviderComputePlanVersion is the regression
+// test for workflow#699 manifest metadata: writeInstalledManifest used to drop
+// top-level iacProvider.computePlanVersion, so installed IaC provider manifests
+// emitted v1/v2 deprecation warnings even when the registry declared v2.
+func TestInstalledManifestPreservesIaCProviderComputePlanVersion(t *testing.T) {
+	rm := &RegistryManifest{
+		Name:        "workflow-plugin-digitalocean",
+		Version:     "2.0.0",
+		Author:      "tester",
+		Description: "regression: iacProvider.computePlanVersion preserved post-install",
+		Type:        "external",
+		Tier:        "community",
+		License:     "MIT",
+		Capabilities: &RegistryCapabilities{
+			ModuleTypes: []string{"iac.provider"},
+			IaCProvider: &RegistryIaCProvider{
+				Name: "digitalocean",
+			},
+		},
+		IaCProvider: &RegistryIaCProvider{
+			ComputePlanVersion: "v2",
+		},
+	}
+
+	dir := t.TempDir()
+	path := filepath.Join(dir, "plugin.json")
+	if err := writeInstalledManifest(path, rm); err != nil {
+		t.Fatalf("writeInstalledManifest: %v", err)
+	}
+
+	data, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatalf("read installed plugin.json: %v", err)
+	}
+	var got struct {
+		IaCProvider *RegistryIaCProvider `json:"iacProvider"`
+	}
+	if err := json.Unmarshal(data, &got); err != nil {
+		t.Fatalf("unmarshal installed plugin.json: %v", err)
+	}
+	if got.IaCProvider == nil {
+		t.Fatal("expected top-level iacProvider")
+	}
+	if got.IaCProvider.ComputePlanVersion != "v2" {
+		t.Fatalf("computePlanVersion = %q, want v2", got.IaCProvider.ComputePlanVersion)
+	}
+}
+
 // TestInstalledManifestEngineValidation verifies that the plugin.json written by
 // writeInstalledManifest passes the engine's plugin.LoadManifest and Validate.
 func TestInstalledManifestEngineValidation(t *testing.T) {

cmd/wfctl/plugin_registry.go

@@ -37,6 +37,7 @@ type RegistryManifest struct {
 	Keywords         []string                   `json:"keywords,omitempty"`
 	Homepage         string                     `json:"homepage,omitempty"`
 	Capabilities     *RegistryCapabilities      `json:"capabilities,omitempty"`
+	IaCProvider      *RegistryIaCProvider       `json:"iacProvider,omitempty"`
 	Contracts        []pluginContractDescriptor `json:"contracts,omitempty"`
 	Downloads        []PluginDownload           `json:"downloads,omitempty"`
 	Assets           *PluginAssets              `json:"assets,omitempty"`
@@ -75,8 +76,9 @@ type RegistryCLICommand struct {
 // installed plugin.json to match a requested provider name (e.g. "digitalocean")
 // to a plugin directory.
 type RegistryIaCProvider struct {
-	Name          string   `json:"name"`
-	ResourceTypes []string `json:"resourceTypes,omitempty"`
+	Name               string   `json:"name,omitempty"`
+	ResourceTypes      []string `json:"resourceTypes,omitempty"`
+	ComputePlanVersion string   `json:"computePlanVersion,omitempty"`
 }
 
 // PluginDownload describes a platform-specific binary download for a plugin.