feat(node-type-registry): add missing defaults to centralize all defaults in registry

- AuthzRelatedPeerOwnership: add default 'id' to obj_ref_field
- AuthzEntityMembership: add sel_field with default 'entity_id'
- AuthzRelatedEntityMembership: add sel_field and sprt_join_field with default 'entity_id'

These defaults were previously hardcoded in the cpt_* AST builder functions.
Moving them to the registry makes it the single source of truth for all defaults.

Author: pyramation

packages/node-type-registry/src/authz/authz-entity-membership.ts

@@ -14,6 +14,11 @@ export const AuthzEntityMembership: NodeTypeDefinition = {
         format: 'column-ref',
         description: 'Column name referencing the entity (e.g., entity_id, org_id)'
       },
+      sel_field: {
+        type: 'string',
+        description: 'SPRT column to select for the entity match',
+        default: 'entity_id'
+      },
       membership_type: {
         type: [
           'integer',

packages/node-type-registry/src/authz/authz-related-entity-membership.ts

@@ -14,6 +14,16 @@ export const AuthzRelatedEntityMembership: NodeTypeDefinition = {
         format: 'column-ref',
         description: 'Column name on protected table referencing the join table'
       },
+      sel_field: {
+        type: 'string',
+        description: 'SPRT column to select for the entity match',
+        default: 'entity_id'
+      },
+      sprt_join_field: {
+        type: 'string',
+        description: 'SPRT column to join on with the related table',
+        default: 'entity_id'
+      },
       membership_type: {
         type: [
           'integer',

packages/node-type-registry/src/authz/authz-related-peer-ownership.ts

@@ -51,7 +51,8 @@ export const AuthzRelatedPeerOwnership: NodeTypeDefinition = {
       obj_ref_field: {
         type: 'string',
         format: 'column-ref',
-        description: 'Field on related table to select for matching entity_field (defaults to id)'
+        description: 'Field on related table to select for matching entity_field',
+        default: 'id'
       },
       permission: {
         type: 'string',