Expose ITAM devices on MCP, CLI, and n8n

Devices were only available through GraphQL and the agent API. Add
list/get/revoke/delete/set-owner across MCP, prb, and n8n, with latest
postures nested on list and get responses.

Signed-off-by: Ludovic Vielle <ludovic@probo.com>

pkg/cmd/device/set-owner/set_owner.go

@@ -0,0 +1,141 @@
+// Copyright (c) 2026 Probo Inc <hello@probo.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package setowner
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"go.probo.inc/probo/pkg/cli/api"
+	"go.probo.inc/probo/pkg/cmd/cmdutil"
+)
+
+const setOwnerMutation = `
+mutation($input: SetDeviceOwnerInput!) {
+  setDeviceOwner(input: $input) {
+    device {
+      id
+      owner {
+        id
+      }
+    }
+  }
+}
+`
+
+type setOwnerResponse struct {
+	SetDeviceOwner struct {
+		Device struct {
+			ID    string `json:"id"`
+			Owner *struct {
+				ID string `json:"id"`
+			} `json:"owner"`
+		} `json:"device"`
+	} `json:"setDeviceOwner"`
+}
+
+func NewCmdSetOwner(f *cmdutil.Factory) *cobra.Command {
+	var flagOwner string
+
+	cmd := &cobra.Command{
+		Use:   "set-owner <id>",
+		Short: "Set or clear the owner of an ITAM device",
+		Example: `  # Assign an owner
+  prb device set-owner <device-id> --owner <profile-id>
+
+  # Clear the owner
+  prb device set-owner <device-id> --owner ""`,
+		Args: cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if !cmd.Flags().Changed("owner") {
+				return fmt.Errorf("--owner is required (pass an empty value to clear)")
+			}
+
+			cfg, err := f.Config()
+			if err != nil {
+				return err
+			}
+
+			host, hc, err := cfg.DefaultHost()
+			if err != nil {
+				return err
+			}
+
+			client := api.NewClient(
+				host,
+				hc.Token,
+				"/api/console/v1/graphql",
+				cfg.HTTPTimeoutDuration(),
+				cmdutil.TokenRefreshOption(cfg, host, hc),
+			)
+
+			input := map[string]any{
+				"deviceId": args[0],
+			}
+
+			if flagOwner == "" {
+				input["ownerId"] = nil
+			} else {
+				input["ownerId"] = flagOwner
+			}
+
+			data, err := client.Do(
+				setOwnerMutation,
+				map[string]any{"input": input},
+			)
+			if err != nil {
+				return err
+			}
+
+			var resp setOwnerResponse
+			if err := json.Unmarshal(data, &resp); err != nil {
+				return fmt.Errorf("cannot parse response: %w", err)
+			}
+
+			ownerID := ""
+			if resp.SetDeviceOwner.Device.Owner != nil {
+				ownerID = resp.SetDeviceOwner.Device.Owner.ID
+			}
+
+			if ownerID == "" {
+				_, _ = fmt.Fprintf(
+					f.IOStreams.Out,
+					"Cleared owner on device %s\n",
+					resp.SetDeviceOwner.Device.ID,
+				)
+			} else {
+				_, _ = fmt.Fprintf(
+					f.IOStreams.Out,
+					"Set owner of device %s to %s\n",
+					resp.SetDeviceOwner.Device.ID,
+					ownerID,
+				)
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&flagOwner, "owner", "", "Owner profile ID (empty to clear)")
+
+	return cmd
+}