CEXT-6405: Migrate customer / custom-mass-action to Admin UI V2

admin-ui-sdk/v2/customer/custom-mass-action/.gitignore

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+# package directories
+node_modules
+
+# build
+build
+dist
+.manifest-dist.yml
+
+# Config
+config.json
+.env*
+!.env.dist
+.aio
+
+# Adobe I/O console config
+console.json
+
+.idea
+.aws.tmp.creds.json
+.parcel-cache
+.DS_Store
+.vscode
+

admin-ui-sdk/v2/customer/custom-mass-action/README.md

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+# Customer Mass Action — Admin UI SDK V2
+
+Adds custom mass actions to the customer grid in the Adobe Commerce Admin panel.
+
+When a merchant selects one or more customers and picks one of these actions from the mass actions dropdown, Commerce Admin either opens an iframe backed by your App Builder frontend (`view` actions), or calls a backend runtime action directly with no UI (`worker` actions).
+
+## What you get
+
+Three sample mass actions:
+
+| Action | Type | Behavior |
+|---|---|---|
+| Customer Mass Action | `view` | Opens an iframe listing the selected customer IDs |
+| Mass Action With Redirect | `view` | Opens an iframe showing the selected customer IDs in a combobox and closes on "Done" |
+| Mass Action No iFrame | `worker` | Runs `mass-actions/massAction` as a backend runtime action — no UI is shown |
+
+The mass action definitions live in `app.commerce.config.ts`. The iframe UI lives in `src/commerce-backend-ui-2/web-src/`. The worker action logic lives in `src/commerce-backend-ui-2/actions/massAction/index.js`.
+
+## How it works
+
+1. Merchant selects one or more customers in the customer grid and picks a mass action from the dropdown
+2. For `view` actions, Commerce Admin opens the configured `path` inside an iframe backed by your App Builder web app; the app reads the selected IDs via the Admin UI SDK guest connection (`sharedContext.get('selectedIds')`)
+3. For `worker` actions, Commerce Admin calls the configured `runtimeAction` directly with the selected IDs — no iframe is shown
+
+## Prerequisites
+
+- [Node.js](https://nodejs.org/) >= 24
+- [Adobe I/O CLI](https://developer.adobe.com/runtime/docs/guides/tools/cli_install/) (`npm install -g @adobe/aio-cli`)
+- An App Builder project on [Adobe Developer Console](https://developer.adobe.com/console/) with a workspace configured for your Commerce instance
+- Adobe Commerce >= 2.4.7 with the [Admin UI SDK module](https://developer.adobe.com/commerce/extensibility/admin-ui-sdk/) installed and enabled
+
+## Setup
+
+**1. Install dependencies**
+
+```bash
+npm install
+```
+
+**2. Connect to your App Builder workspace**
+
+```bash
+aio console org select
+aio console project select
+aio console workspace select
+aio app use -g --no-input --overwrite
+```
+
+**3. Deploy**
+
+```bash
+aio app deploy
+```
+
+**4. Associate and install on Commerce**
+
+Associate and install the app with your Commerce instance through the App Management UI in the Commerce Admin. See [App Management](https://developer.adobe.com/commerce/extensibility/app-management/) for the full walkthrough.
+
+To verify the installation, navigate to **Stores → Configuration → Adobe Services → Admin UI SDK → Configure Extensions** and check the **Installed Extensions** tab — the app should appear there once successfully installed.
+
+## More information
+
+- [Admin UI SDK — Customer Mass Action](https://developer.adobe.com/commerce/extensibility/admin-ui-sdk/extension-points/customer/mass-action/)
+- [App Management](https://developer.adobe.com/commerce/extensibility/app-management/)

admin-ui-sdk/v2/customer/custom-mass-action/app.commerce.config.ts

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+/*
+ * Copyright 2026 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+import { defineConfig } from '@adobe/aio-commerce-lib-app/config'
+
+export default defineConfig({
+  metadata: {
+    id: 'customer-custom-mass-action',
+    displayName: 'Adobe Commerce customer grid custom mass action',
+    version: '1.0.0',
+    description: 'Adobe Commerce customer grid custom mass action in admin panel',
+  },
+  adminUi: {
+    customer: {
+      massActions: [
+        {
+          id: 'customer-custom-mass-action::customer-mass-action',
+          label: 'Customer Mass Action',
+          type: 'view',
+          path: '#/customer-mass-action',
+          confirm: {
+            title: 'Mass Action',
+            message: 'Are you sure your want to proceed with Mass Action on selected customers?',
+          },
+          selectionLimit: 1,
+        },
+        {
+          id: 'customer-custom-mass-action::mass-action-with-redirect',
+          label: 'Mass Action With Redirect',
+          title: 'Customer Mass Action With Redirect',
+          type: 'view',
+          path: '#/mass-action-with-redirect',
+        },
+        {
+          id: 'customer-custom-mass-action::mass-action-no-iFrame',
+          label: 'Mass Action No iFrame',
+          type: 'worker',
+          runtimeAction: 'mass-actions/massAction',
+        },
+      ],
+    },
+  },
+})

admin-ui-sdk/v2/customer/custom-mass-action/app.config.yaml

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+extensions:
+  commerce/backend-ui/2:
+    $include: src/commerce-backend-ui-2/ext.config.yaml
+  commerce/extensibility/1:
+    $include: src/commerce-extensibility-1/ext.config.yaml

admin-ui-sdk/v2/customer/custom-mass-action/extension-manifest.json

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+{
+  "name": "customer-custom-mass-action",
+  "displayName": "Adobe Commerce customer grid custom mass action",
+  "description": "Adobe Commerce customer grid custom mass action in admin panel",
+  "platform": "web",
+  "id": "customer-custom-mass-action",
+  "version": "1.0.0"
+}

admin-ui-sdk/v2/customer/custom-mass-action/install.yaml

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+$schema: http://json-schema.org/draft-07/schema
+$id: https://adobe.io/schemas/app-builder-templates/1
+
+categories:
+  - action
+  - ui
+
+extensions:
+  - extensionPointId: commerce/backend-ui/2
+  - extensionPointId: commerce/extensibility/1