@@ -0,0 +1,15 @@
+---
+'@objectstack/plugin-auth': patch
+'@objectstack/platform-objects': patch
+---
+
+fix(plugin-auth): a role change that grants an org-admin permission set says which set it granted (#27862)
+
+Clause-②: yes (widening: update-member-role's success answer gains outcome 'permission_set_granted' and grantedPermissionSet; the two sys_member actions gain outcomeMessages)
+Metadata-protocol: none
+
+Raising a member to `admin` or `owner` grants an org-admin permission set as a side effect (`organization_admin`, or `organization_admin_no_bypass` on a wall-less posture). The role change used to answer the member row alone, so the console toasted "Member role updated" and the administrator later found a set on the user that nobody visibly assigned.
+
+- **Now.** When the role change left the member holding an org-admin set they did not hold before it, `POST /api/v1/auth/organization/update-member-role` answers two more members beside the member row: `outcome: 'permission_set_granted'` and `grantedPermissionSet: { name, label }`, the label read from the security catalog. The `sys_member` actions Change Role and Make Owner show it: "Member role updated. The new role also granted the permission set Organization Administrator (no record bypass)."
+- **Unchanged.** A role change that grants nothing (admin to owner keeps the set already held, a demotion revokes it) and a refusal answer exactly as before. The member row's own columns are untouched. What is granted does not change: the grant is still written by `plugin-security`'s reconciler alone, and the new hooks only read.
+- **Fails toward silence.** A grant read that fails leaves the answer as the route wrote it, without the line.
@@ -694,7 +694,10 @@ export const enObjects: NonNullable<TranslationData['objects']> = {
       },
       update_member_role: {
         label: "Change Role",
-        successMessage: "Member role updated"
+        successMessage: "Member role updated",
+        outcomeMessages: {
+          permission_set_granted: "Member role updated. The new role also granted the permission set ${result.grantedPermissionSet.label}."
+        }
       },
       remove_member: {
         label: "Remove Member",
@@ -704,7 +707,10 @@ export const enObjects: NonNullable<TranslationData['objects']> = {
       transfer_ownership: {
         label: "Make Owner",
         confirmText: "Make the selected member an owner of this organization? They get every owner privilege, including deleting the organization. You stay an owner too; to step down, use Change Role on your own membership.",
-        successMessage: "Member is now an owner"
+        successMessage: "Member is now an owner",
+        outcomeMessages: {
+          permission_set_granted: "Member is now an owner. The new role also granted the permission set ${result.grantedPermissionSet.label}."
+        }
       }
     }
   },
 
@@ -694,7 +694,10 @@ export const esESObjects: NonNullable<TranslationData['objects']> = {
       },
       update_member_role: {
         label: "Cambiar rol",
-        successMessage: "Rol del miembro actualizado"
+        successMessage: "Rol del miembro actualizado",
+        outcomeMessages: {
+          permission_set_granted: "Rol del miembro actualizado. El nuevo rol también concedió el conjunto de permisos ${result.grantedPermissionSet.label}."
+        }
       },
       remove_member: {
         label: "Eliminar miembro",
@@ -704,7 +707,10 @@ export const esESObjects: NonNullable<TranslationData['objects']> = {
       transfer_ownership: {
         label: "Hacer propietario",
         confirmText: "¿Hacer propietario de esta organización al miembro seleccionado? Obtendrá todos los privilegios de propietario, incluido eliminar la organización. Tú sigues siendo propietario; para dejar de serlo, usa «Cambiar rol» en tu propia membresía.",
-        successMessage: "El miembro ahora es propietario"
+        successMessage: "El miembro ahora es propietario",
+        outcomeMessages: {
+          permission_set_granted: "El miembro ahora es propietario. El nuevo rol también concedió el conjunto de permisos ${result.grantedPermissionSet.label}."
+        }
       }
     }
   },
 
@@ -694,7 +694,10 @@ export const jaJPObjects: NonNullable<TranslationData['objects']> = {
       },
       update_member_role: {
         label: "ロールを変更",
-        successMessage: "メンバーロールを更新しました"
+        successMessage: "メンバーロールを更新しました",
+        outcomeMessages: {
+          permission_set_granted: "メンバーのロールを更新しました。新しいロールにより権限セット ${result.grantedPermissionSet.label} も付与されました。"
+        }
       },
       remove_member: {
         label: "メンバーを削除",
@@ -704,7 +707,10 @@ export const jaJPObjects: NonNullable<TranslationData['objects']> = {
       transfer_ownership: {
         label: "所有者にする",
         confirmText: "選択したメンバーをこの組織の所有者にしますか？このメンバーには、組織の削除を含む所有者のすべての権限が付与されます。あなたも引き続き所有者です。退く場合は、自分のメンバーシップで「ロールを変更」を使用してください。",
-        successMessage: "メンバーが所有者になりました"
+        successMessage: "メンバーが所有者になりました",
+        outcomeMessages: {
+          permission_set_granted: "このメンバーはオーナーになりました。新しいロールにより権限セット ${result.grantedPermissionSet.label} も付与されました。"
+        }
       }
     }
   },
 
@@ -694,7 +694,10 @@ export const zhCNObjects: NonNullable<TranslationData['objects']> = {
       },
       update_member_role: {
         label: "更改角色",
-        successMessage: "成员角色已更新"
+        successMessage: "成员角色已更新",
+        outcomeMessages: {
+          permission_set_granted: "成员角色已更新。新角色还授予了权限集 ${result.grantedPermissionSet.label}。"
+        }
       },
       remove_member: {
         label: "移除成员",
@@ -704,7 +707,10 @@ export const zhCNObjects: NonNullable<TranslationData['objects']> = {
       transfer_ownership: {
         label: "设为所有者",
         confirmText: "确定要将所选成员设为该组织的所有者吗？对方将获得所有者的全部权限，包括删除该组织。您仍是所有者；如需卸任，请在您自己的成员记录上使用“更改角色”。",
-        successMessage: "该成员现已成为所有者"
+        successMessage: "该成员现已成为所有者",
+        outcomeMessages: {
+          permission_set_granted: "该成员现已成为所有者。新角色还授予了权限集 ${result.grantedPermissionSet.label}。"
+        }
       }
     }
   },
 
@@ -212,6 +212,14 @@ export const SysMember = ObjectSchema.create({
       requiresFeature: 'organization',
       requiresMembershipReach: 'update_member_role',
       successMessage: 'Member role updated',
+      // [#27862] A role change that grants an org-admin permission set says
+      // which one: update-member-role then answers
+      // `outcome: 'permission_set_granted'` and `grantedPermissionSet` beside
+      // the member row (plugin-auth `role-change-granted-set.ts`).
+      outcomeMessages: {
+        permission_set_granted:
+          'Member role updated. The new role also granted the permission set ${result.grantedPermissionSet.label}.',
+      },
       refreshAfter: true,
       params: [
         { field: 'role', required: true, defaultFromRow: true },
@@ -271,6 +279,11 @@ export const SysMember = ObjectSchema.create({
       requiresMembershipReach: 'transfer_ownership',
       confirmText: 'Make the selected member an owner of this organization? They get every owner privilege, including deleting the organization. You stay an owner too; to step down, use Change Role on your own membership.',
       successMessage: 'Member is now an owner',
+      // [#27862] The same answer as `update_member_role` (the same route).
+      outcomeMessages: {
+        permission_set_granted:
+          'Member is now an owner. The new role also granted the permission set ${result.grantedPermissionSet.label}.',
+      },
       refreshAfter: true,
     },
   ],
 
@@ -28,6 +28,7 @@ interface CopyAction {
   label?: string;
   confirmText?: string;
   successMessage?: string;
+  outcomeMessages?: Record<string, string>;
   target?: string;
   bodyExtra?: Record<string, unknown>;
   recordIdParam?: string;
@@ -71,7 +72,7 @@ describe('sys_member.transfer_ownership — declared copy', () => {
   });
 
   it('promises neither a demotion nor a transfer', () => {
-    for (const text of [action.label, action.confirmText, action.successMessage]) {
+    for (const text of [action.label, action.confirmText, action.successMessage, ...Object.values(action.outcomeMessages ?? {})]) {
       expect(text).not.toMatch(/demot|transfer/i);
     }
     expect(action.confirmText).toContain('You stay an owner');
@@ -93,6 +94,11 @@ describe('sys_member.transfer_ownership — every locale bundle', () => {
   it('en is the declared copy', () => {
     const copy = bundled(enObjects, 'transfer_ownership');
     const action = declared('transfer_ownership');
-    expect(copy).toEqual({ label: action.label, confirmText: action.confirmText, successMessage: action.successMessage });
+    expect(copy).toEqual({
+      label: action.label,
+      confirmText: action.confirmText,
+      successMessage: action.successMessage,
+      outcomeMessages: action.outcomeMessages,
+    });
   });
 });
@@ -47,6 +47,7 @@ import { rotateCallerBearerOnImpersonation } from './impersonation-bearer-rotati
 import { stampInvitationDeliveryOutcome } from './invitation-delivery-outcome.js';
 import { codeInviteRoleNotFound } from './invite-role-not-found-code.js';
 import { readRequestClientAddress } from './request-client-address.js';
+import { stampRoleChangeGrantedSet } from './role-change-granted-set.js';
 import { attachSessionToCredentialResponse } from './session-envelope-completion.js';
 import { resetVerifiedOnTwoFactorReenrollment } from './two-factor-reenrollment-verified-reset.js';
 import { echoInstalledSessionToken } from './two-factor-rotated-token-echo.js';
@@ -64,6 +65,7 @@ export interface AfterHookHost {
   isEmailDeliveryLive: AuthManager['isEmailDeliveryLive'];
   recordPasswordHistory: AuthManager['recordPasswordHistory'];
   recordSignInOutcome: AuthManager['recordSignInOutcome'];
+  roleChangeGrantDeps: AuthManager['roleChangeGrantDeps'];
   sendChangeEmailNotice: AuthManager['sendChangeEmailNotice'];
   stampLastLogin: AuthManager['stampLastLogin'];
   stampPasswordChangedAt: AuthManager['stampPasswordChangedAt'];
@@ -232,6 +234,14 @@ export async function globalAfterHook(this: AfterHookHost, ctx: any) {
   // `invitation-delivery-outcome.ts`). A refusal passes untouched.
   await stampInvitationDeliveryOutcome(ctx, () => this.isEmailDeliveryLive());
 
+  // ── #27862: a role change names the permission set it granted ──
+  // The before hook read the member's org-admin grants; a success that
+  // left a new one held answers `outcome: 'permission_set_granted'` and
+  // `grantedPermissionSet: { name, label }` beside the member row (see
+  // `role-change-granted-set.ts`). A refusal passes untouched.
+  const roleChangeDeps = this.roleChangeGrantDeps();
+  if (roleChangeDeps) await stampRoleChangeGrantedSet(ctx, roleChangeDeps);
+
   // ── #24750: invite-member's unknown-role refusal carries its code ──
   // better-auth throws it with only a message; the spec promises
   // `ROLE_NOT_FOUND` (see `invite-role-not-found-code.ts`). It throws
 
@@ -118,6 +118,7 @@ export interface AuthInstanceHost {
   resolveAuthSecret: AuthManager['resolveAuthSecret'];
   resolvePasswordChangeUserId: AuthManager['resolvePasswordChangeUserId'];
   resolvePasswordHasher: AuthManager['resolvePasswordHasher'];
+  roleChangeGrantDeps: AuthManager['roleChangeGrantDeps'];
   sendChangeEmailNotice: AuthManager['sendChangeEmailNotice'];
   sendExistingAccountSignUpNotice: AuthManager['sendExistingAccountSignUpNotice'];
   signUpForcedOff: AuthManager['signUpForcedOff'];
@@ -706,6 +707,7 @@ export async function createAuthInstance(this: AuthInstanceHost): Promise<Auth<a
           isPlatformAdminUserId: (...a) => this.isPlatformAdminUserId(...a),
           resolveActor: (...a) => this.resolveActor(...a),
           resolvePasswordChangeUserId: (...a) => this.resolvePasswordChangeUserId(...a),
+          roleChangeGrantDeps: (...a) => this.roleChangeGrantDeps(...a),
           validateAudienceAdmission: (...a) => this.validateAudienceAdmission(...a),
         };
         return globalBeforeHook.call(host, ctx, setShouldSkipSessionRefresh);
@@ -720,6 +722,7 @@ export async function createAuthInstance(this: AuthInstanceHost): Promise<Auth<a
           isEmailDeliveryLive: (...a) => this.isEmailDeliveryLive(...a),
           recordPasswordHistory: (...a) => this.recordPasswordHistory(...a),
           recordSignInOutcome: (...a) => this.recordSignInOutcome(...a),
+          roleChangeGrantDeps: (...a) => this.roleChangeGrantDeps(...a),
           sendChangeEmailNotice: (...a) => this.sendChangeEmailNotice(...a),
           stampLastLogin: (...a) => this.stampLastLogin(...a),
           stampPasswordChangedAt: (...a) => this.stampPasswordChangedAt(...a),
 
@@ -71,6 +71,7 @@ import {
 } from './last-local-credential.js';
 import { ORGANIZATION_DELETE_PATH } from './organization-delete.js';
 import { carriesPrincipalSession } from './principal-session-mint.js';
+import { snapshotRoleChangeGrants, UPDATE_MEMBER_ROLE_PATH } from './role-change-granted-set.js';
 
 /**
  * The `AuthManager` members the function below reads — every one of them, and
@@ -98,6 +99,7 @@ export interface BeforeHookHost {
   isPlatformAdminUserId: AuthManager['isPlatformAdminUserId'];
   resolveActor: AuthManager['resolveActor'];
   resolvePasswordChangeUserId: AuthManager['resolvePasswordChangeUserId'];
+  roleChangeGrantDeps: AuthManager['roleChangeGrantDeps'];
   validateAudienceAdmission: AuthManager['validateAudienceAdmission'];
 }
 
@@ -660,6 +662,15 @@ export async function globalBeforeHook(
     });
   }
 
+  // ── #27862: read the member's org-admin grants before a role change ──
+  // The after hook compares them with what the change left held and names
+  // the set it granted (see `role-change-granted-set.ts`). A read only: it
+  // gates nothing, and a read that fails stashes nothing.
+  if (ctx?.path === UPDATE_MEMBER_ROLE_PATH) {
+    const roleChangeDeps = this.roleChangeGrantDeps();
+    if (roleChangeDeps) await snapshotRoleChangeGrants(ctx, roleChangeDeps);
+  }
+
   // ── ADR-0069 D2: account lockout (gate) ─────────────────────
   // Reject a sign-in for a locked identity BEFORE better-auth checks
   // the password — a lock must hold even against the correct password.