Add risk assessment boundary model

Introduce RiskAssessmentBoundary as a first-class, self-nesting entity that
groups nodes within a risk assessment scope, and thread it through every
surface.

- coredata: new risk_assessment_boundaries table + migration, boundary_id on
  nodes, self-referential parent_boundary_id, entity type registration
- riskmanagement: boundary CRUD service methods, boundary_id wiring on node
  create/update, scope-membership and self-parent validation, nested-subgraph
  Mermaid rendering
- IAM: core:risk-assessment-boundary:{get,list,create,update,delete} actions
  and viewer/auditor read policies
- console GraphQL: RiskAssessmentBoundary type, connection, order enum, CRUD
  mutations, boundaries field on scope, boundaryId on nodes
- CLI: risk-assessment boundary command group and --boundary-id on nodes
- MCP: boundary tools and boundary_id on node tools
- n8n: boundary operations and boundary fields on node operations
- console UI: boundary list/create/edit, boundary selector on nodes, diagram
  refetch on boundary changes

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/cmd/risk-assessment/boundary/list/list.go

@@ -0,0 +1,208 @@
+// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package list
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"go.probo.inc/probo/pkg/cli/api"
+	"go.probo.inc/probo/pkg/cmd/cmdutil"
+)
+
+const listQuery = `
+query($id: ID!, $first: Int, $after: CursorKey, $orderBy: RiskAssessmentBoundaryOrder) {
+  node(id: $id) {
+    __typename
+    ... on RiskAssessmentScope {
+      boundaries(first: $first, after: $after, orderBy: $orderBy) {
+        totalCount
+        edges {
+          node {
+            id
+            riskAssessmentScopeId
+            parentBoundaryId
+            name
+            createdAt
+            updatedAt
+          }
+        }
+        pageInfo {
+          hasNextPage
+          endCursor
+        }
+      }
+    }
+  }
+}
+`
+
+type riskAssessmentBoundary struct {
+	ID                    string  `json:"id"`
+	RiskAssessmentScopeId string  `json:"riskAssessmentScopeId"`
+	ParentBoundaryId      *string `json:"parentBoundaryId"`
+	Name                  string  `json:"name"`
+	CreatedAt             string  `json:"createdAt"`
+	UpdatedAt             string  `json:"updatedAt"`
+}
+
+func NewCmdList(f *cmdutil.Factory) *cobra.Command {
+	var (
+		flagScope    string
+		flagLimit    int
+		flagOrderBy  string
+		flagOrderDir string
+		flagOutput   *string
+	)
+
+	cmd := &cobra.Command{
+		Use:     "list",
+		Short:   "List boundaries in a risk assessment scope",
+		Aliases: []string{"ls"},
+		Example: `  # List boundaries in a scope
+  prb risk-assessment boundary list --scope <id>
+
+  # List boundaries as JSON
+  prb risk-assessment boundary ls --scope <id> --json`,
+		Args: cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := cmdutil.ValidateOutputFlag(flagOutput); err != nil {
+				return err
+			}
+
+			if err := cmdutil.ValidateLimit(flagLimit); err != nil {
+				return err
+			}
+
+			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),
+			)
+
+			if flagScope == "" {
+				return fmt.Errorf("scope is required; pass --scope")
+			}
+
+			variables := map[string]any{
+				"id": flagScope,
+			}
+
+			if flagOrderBy != "" {
+				if err := cmdutil.ValidateEnum("order-by", flagOrderBy, []string{"CREATED_AT", "NAME"}); err != nil {
+					return err
+				}
+
+				variables["orderBy"] = map[string]any{
+					"field":     flagOrderBy,
+					"direction": flagOrderDir,
+				}
+			}
+
+			boundaries, totalCount, err := api.Paginate(
+				client,
+				listQuery,
+				variables,
+				flagLimit,
+				func(data json.RawMessage) (*api.Connection[riskAssessmentBoundary], error) {
+					var resp struct {
+						Node *struct {
+							Typename   string                                 `json:"__typename"`
+							Boundaries api.Connection[riskAssessmentBoundary] `json:"boundaries"`
+						} `json:"node"`
+					}
+					if err := json.Unmarshal(data, &resp); err != nil {
+						return nil, err
+					}
+
+					if resp.Node == nil {
+						return nil, fmt.Errorf("scope %s not found", flagScope)
+					}
+
+					if resp.Node.Typename != "RiskAssessmentScope" {
+						return nil, fmt.Errorf("expected RiskAssessmentScope node, got %s", resp.Node.Typename)
+					}
+
+					return &resp.Node.Boundaries, nil
+				},
+			)
+			if err != nil {
+				return err
+			}
+
+			if *flagOutput == cmdutil.OutputJSON {
+				return cmdutil.PrintJSON(f.IOStreams.Out, boundaries)
+			}
+
+			if len(boundaries) == 0 {
+				_, _ = fmt.Fprintln(f.IOStreams.Out, "No boundaries found.")
+				return nil
+			}
+
+			rows := make([][]string, 0, len(boundaries))
+			for _, b := range boundaries {
+				parent := ""
+				if b.ParentBoundaryId != nil {
+					parent = *b.ParentBoundaryId
+				}
+
+				rows = append(rows, []string{
+					b.ID,
+					b.Name,
+					parent,
+					cmdutil.FormatTime(b.CreatedAt),
+				})
+			}
+
+			t := cmdutil.NewTable("ID", "NAME", "PARENT", "CREATED AT").Rows(rows...)
+
+			_, _ = fmt.Fprintln(f.IOStreams.Out, t)
+
+			if totalCount > len(boundaries) {
+				_, _ = fmt.Fprintf(
+					f.IOStreams.ErrOut,
+					"\nShowing %d of %d boundaries\n",
+					len(boundaries),
+					totalCount,
+				)
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&flagScope, "scope", "", "Risk assessment scope ID (required)")
+	cmd.Flags().IntVarP(&flagLimit, "limit", "L", 30, "Maximum number of boundaries to list")
+	cmd.Flags().StringVar(&flagOrderBy, "order-by", "", "Order by field (CREATED_AT, NAME)")
+	cmd.Flags().StringVar(&flagOrderDir, "order-direction", "DESC", "Sort direction (ASC, DESC)")
+	flagOutput = cmdutil.AddOutputFlag(cmd)
+
+	_ = cmd.MarkFlagRequired("scope")
+
+	return cmd
+}