@@ -0,0 +1,15 @@
+---
+'@object-ui/app-shell': patch
+---
+
+Studio's object Settings tab picks the sharing model, the external sharing model, the name field, the lifecycle field and the next highlight field with the shared `Select`, the control Studio's validation rule editor already picks with (objectui#11865, the object settings part of that card).
+
+The five pickers were browser-native selects, so they looked and behaved differently from Studio's other dropdowns. They now use the shared Radix `Select`: the same trigger, dropdown and keyboard behaviour.
+
+What they write is unchanged. Each option writes the same patch as before, key for key: "not set", "auto-derived" and "auto-detect" still clear their key, "None" on the lifecycle field still writes `stageField: false`, and "+ Add field…" still writes nothing. Re-picking the current option writes nothing. Each labelled picker keeps the accessible name its label gave the native select.
+
+On a read-only package the four pickers are disabled and wear the shared control's own disabled look (objectui#11781), and the "add field" picker is not shown, as before.
+
+One display change: an object whose stored value is not among a picker's options now shows that value. This happens, for example, when the name field names a field that has been removed, or the lifecycle field names one that is not a select field. The native select showed its first option instead ("not set", "auto-derived" or "auto-detect"), which is not what the object says.
+
+**Clause-②: no.** No published face moves: `ObjectSettingsPanel` takes the same props, the package entry exports the same names, and no i18n key is added. What moves is the panel's own markup, described above.
@@ -0,0 +1,290 @@
+/**
+ * ObjectUI
+ * Copyright (c) 2024-present ObjectStack Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * Studio's object settings panel picks with the shared `Select` (objectui#11865).
+ *
+ * The Settings tab picked the internal and external sharing model, the name
+ * field, the lifecycle field and the next highlight field with browser-native
+ * selects, beside the shared Radix `Select` the rest of Studio picks with. The
+ * card asks for one control for one kind of choice, surface by surface; this
+ * suite covers this panel's pickers.
+ *
+ * What is pinned:
+ *   - each picker IS the primitive (a Radix combobox trigger), shows the
+ *     object's value, and no native select is left;
+ *   - the four labelled pickers keep the name their wrapping label gave the
+ *     native control; the "add field" picker had no label and still has no
+ *     name;
+ *   - every option of every picker writes the `onPatch` payload the native
+ *     control wrote, compared as JSON text, with the keys that hold
+ *     `undefined` named (JSON text drops them). That covers each "not set",
+ *     "auto-derived" and "auto-detect" option, which writes its key holding
+ *     `undefined`, and "None", which writes `stageField: false`;
+ *   - re-picking the current option writes nothing, and neither does
+ *     "add field";
+ *   - read-only: each trigger is disabled, wears the primitive's own disabled
+ *     look, and does not open; the "add field" picker is not drawn, as before;
+ *   - a stored value no option carries is what the trigger shows;
+ *   - the keyboard alone opens a picker and selects.
+ *
+ * DIRECTION, observed against the native control: every pin here is red
+ * there, because each one reads the pickers as the primitive's triggers. What
+ * makes the write pins guards of "the conversion changed nothing the panel
+ * writes" is the literal each compares against: a `change` event on the
+ * pre-conversion panel's native control wrote that same JSON, with the same
+ * `undefined` keys, read once on that component. The names were read there
+ * the same way. That probe's `change` event fired for the current option too,
+ * so the re-pick rows pin the primitive, not a browser reading of the native
+ * control.
+ */
+
+import '@testing-library/jest-dom/vitest';
+import * as React from 'react';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { cleanup, fireEvent, render, screen, within } from '@testing-library/react';
+import { Select, SelectTrigger, SelectValue } from '@object-ui/components';
+import { t } from '../metadata-admin/i18n';
+import { ObjectSettingsPanel } from './ObjectSettingsPanel';
+
+afterEach(cleanup);
+
+const en = (key: string) => t(key, 'en-US');
+
+const FIELDS = {
+  name: { type: 'text', label: 'Name' },
+  status: { type: 'select', label: 'Status' },
+  stage: { type: 'select' },
+  secret: { type: 'text', label: 'Secret', hidden: true },
+  code: { label: 'Code' },
+};
+
+/** An object with every picker set to one of its own options. */
+const DRAFT: Record<string, unknown> = {
+  fields: FIELDS,
+  sharingModel: 'public_read',
+  externalSharingModel: 'private',
+  nameField: 'name',
+  stageField: 'status',
+  highlightFields: ['name'],
+};
+
+const PICKERS = [
+  'owd-internal-select',
+  'owd-external-select',
+  'name-field-select',
+  'stage-field-select',
+  'highlight-add-select',
+] as const;
+
+/** The labelled pickers, by the i18n key of the label that names each. */
+const NAMED_BY: ReadonlyArray<readonly [string, string]> = [
+  ['owd-internal-select', 'engine.studio.settings.sharingModel'],
+  ['owd-external-select', 'engine.studio.settings.sharingExternal'],
+  ['name-field-select', 'engine.studio.settings.nameField'],
+  ['stage-field-select', 'engine.studio.settings.stageField'],
+];
+
+function renderPanel(draft: Record<string, unknown> = DRAFT, disabled?: boolean) {
+  const onPatch = vi.fn();
+  const utils = render(
+    <ObjectSettingsPanel name="leave_request" draft={draft} onPatch={onPatch} disabled={disabled} locale="en-US" />,
+  );
+  return { ...utils, onPatch };
+}
+
+/** Open a picker from the keyboard and return the options it lists, in order. */
+async function openPicker(testId: string): Promise<HTMLElement[]> {
+  fireEvent.keyDown(screen.getByTestId(testId), { key: 'ArrowDown' });
+  const listbox = await screen.findByRole('listbox');
+  return within(listbox).getAllByRole('option');
+}
+
+async function pick(testId: string, label: string): Promise<void> {
+  const options = await openPicker(testId);
+  const option = options.find((o) => o.textContent === label);
+  if (!option) throw new Error(`${testId} lists no "${label}": ${options.map((o) => o.textContent).join(' | ')}`);
+  fireEvent.click(option);
+}
+
+/** The `disabled:` utilities the shared `SelectTrigger` wears. */
+function primitiveDisabledLook(): string[] {
+  const { getByRole, unmount } = render(
+    <Select disabled>
+      <SelectTrigger>
+        <SelectValue />
+      </SelectTrigger>
+    </Select>,
+  );
+  const tokens = getByRole('combobox').className.split(/\s+/).filter((c) => c.startsWith('disabled:'));
+  unmount();
+  return tokens;
+}
+
+describe('the object settings pickers are the shared Select (objectui#11865)', () => {
+  it('renders each picker as the Radix combobox trigger, showing the object’s value', () => {
+    const { container } = renderPanel();
+    expect(container.querySelector('select')).toBeNull();
+
+    const shown: Record<string, string> = {};
+    for (const id of PICKERS) {
+      const trigger = screen.getByTestId(id);
+      expect(trigger.tagName).toBe('BUTTON');
+      expect(trigger).toHaveAttribute('role', 'combobox');
+      shown[id] = trigger.textContent ?? '';
+    }
+    expect(shown).toEqual({
+      'owd-internal-select': en('engine.studio.settings.sharingPublicRead'),
+      'owd-external-select': en('engine.studio.settings.sharingPrivate'),
+      'name-field-select': 'Name (name)',
+      'stage-field-select': 'Status (status)',
+      'highlight-add-select': en('engine.studio.settings.addFieldOption'),
+    });
+  });
+
+  it('each labelled picker keeps the name its label gave the native control', () => {
+    renderPanel();
+    for (const [id, key] of NAMED_BY) {
+      expect(screen.getByRole('combobox', { name: en(key) }), id).toBe(screen.getByTestId(id));
+    }
+  });
+
+  it('the "add field" picker had no label and still has no name', () => {
+    renderPanel();
+    expect(screen.getByRole('combobox', { name: '' })).toBe(screen.getByTestId('highlight-add-select'));
+  });
+
+  it('"None" on the lifecycle field is what the trigger shows for stageField: false', () => {
+    renderPanel({ ...DRAFT, stageField: false });
+    expect(screen.getByTestId('stage-field-select')).toHaveTextContent(en('engine.studio.settings.stageNone'));
+  });
+});
+
+/**
+ * [picker, option label, the JSON text `onPatch` received, the keys of the
+ * patch that hold `undefined`]. `null`: nothing is written — the option is the
+ * current one, or it is "add field".
+ */
+const WRITES: ReadonlyArray<readonly [string, string, string | null, readonly string[]]> = [
+  ['owd-internal-select', en('engine.studio.settings.sharingUnset'), '{}', ['sharingModel']],
+  ['owd-internal-select', en('engine.studio.settings.sharingPrivate'), '{"sharingModel":"private"}', []],
+  ['owd-internal-select', en('engine.studio.settings.sharingPublicRead'), null, []],
+  ['owd-internal-select', en('engine.studio.settings.sharingPublicReadWrite'), '{"sharingModel":"public_read_write"}', []],
+  ['owd-internal-select', en('engine.studio.settings.sharingControlledByParent'), '{"sharingModel":"controlled_by_parent"}', []],
+  ['owd-external-select', en('engine.studio.settings.sharingExternalUnset'), '{}', ['externalSharingModel']],
+  ['owd-external-select', en('engine.studio.settings.sharingPrivate'), null, []],
+  ['owd-external-select', en('engine.studio.settings.sharingPublicRead'), '{"externalSharingModel":"public_read"}', []],
+  ['owd-external-select', en('engine.studio.settings.sharingPublicReadWrite'), '{"externalSharingModel":"public_read_write"}', []],
+  ['owd-external-select', en('engine.studio.settings.sharingControlledByParent'), '{"externalSharingModel":"controlled_by_parent"}', []],
+  ['name-field-select', en('engine.studio.settings.autoDerive'), '{}', ['nameField']],
+  ['name-field-select', 'Name (name)', null, []],
+  ['name-field-select', 'Status (status)', '{"nameField":"status"}', []],
+  ['name-field-select', 'stage', '{"nameField":"stage"}', []],
+  ['name-field-select', 'Secret (secret)', '{"nameField":"secret"}', []],
+  ['name-field-select', 'Code (code)', '{"nameField":"code"}', []],
+  ['stage-field-select', en('engine.studio.settings.autoDetect'), '{}', ['stageField']],
+  ['stage-field-select', en('engine.studio.settings.stageNone'), '{"stageField":false}', []],
+  ['stage-field-select', 'Status (status)', null, []],
+  ['stage-field-select', 'stage', '{"stageField":"stage"}', []],
+  ['highlight-add-select', en('engine.studio.settings.addFieldOption'), null, []],
+  ['highlight-add-select', 'Status (status)', '{"highlightFields":["name","status"]}', []],
+  ['highlight-add-select', 'stage', '{"highlightFields":["name","stage"]}', []],
+  ['highlight-add-select', 'Code (code)', '{"highlightFields":["name","code"]}', []],
+];
+
+describe('every option writes what the native control wrote', () => {
+  it('the table covers every option of every picker, in the order each lists them', async () => {
+    for (const id of PICKERS) {
+      renderPanel();
+      const listed = (await openPicker(id)).map((o) => o.textContent);
+      expect(listed, id).toEqual(WRITES.filter(([p]) => p === id).map(([, label]) => label));
+      cleanup();
+    }
+  });
+
+  it.each(WRITES.map((row) => [`${row[0]} → ${row[1]}`, ...row] as const))(
+    '%s',
+    async (_name, testId, label, json, undefinedKeys) => {
+      const { onPatch } = renderPanel();
+      await pick(testId, label);
+      if (json === null) {
+        expect(onPatch).not.toHaveBeenCalled();
+        return;
+      }
+      expect(onPatch).toHaveBeenCalledTimes(1);
+      const patch = onPatch.mock.calls[0][0] as Record<string, unknown>;
+      expect(JSON.stringify(patch)).toBe(json);
+      expect(Object.keys(patch).filter((k) => patch[k] === undefined)).toEqual(undefinedKeys);
+    },
+  );
+});
+
+describe('read-only follows the primitive (objectui#11781)', () => {
+  it('each picker is disabled, wears the primitive’s disabled look, and does not open', () => {
+    const look = primitiveDisabledLook();
+    expect(look.length, 'the primitive carries no disabled look to compare with').toBeGreaterThan(0);
+    const { onPatch } = renderPanel(DRAFT, true);
+    for (const [id] of NAMED_BY) {
+      const trigger = screen.getByTestId(id);
+      expect(trigger).toBeDisabled();
+      for (const token of look) expect(trigger, `${id} lacks ${token}`).toHaveClass(token);
+      fireEvent.keyDown(trigger, { key: 'ArrowDown' });
+      expect(screen.queryByRole('listbox'), `${id} opened while read-only`).toBeNull();
+    }
+    // As before the conversion, read-only draws no "add field" picker at all.
+    expect(screen.queryByTestId('highlight-add-select')).toBeNull();
+    expect(onPatch).not.toHaveBeenCalled();
+  });
+
+  it('CONTROL — writable: the same pickers are drawn and enabled', () => {
+    renderPanel();
+    for (const id of PICKERS) expect(screen.getByTestId(id)).toBeEnabled();
+  });
+});
+
+describe('a stored value no option carries is what the trigger shows', () => {
+  it('a name field the object does not have: shown and listed first, and re-picking it writes nothing', async () => {
+    const { onPatch } = renderPanel({ ...DRAFT, nameField: 'ghost' });
+    // The native control showed "(auto-derived)" here, as if no name field were set.
+    expect(screen.getByTestId('name-field-select')).toHaveTextContent('ghost');
+    const listed = (await openPicker('name-field-select')).map((o) => o.textContent);
+    expect(listed).toEqual([
+      'ghost',
+      en('engine.studio.settings.autoDerive'),
+      'Name (name)',
+      'Status (status)',
+      'stage',
+      'Secret (secret)',
+      'Code (code)',
+    ]);
+    fireEvent.click(screen.getAllByRole('option')[0]);
+    expect(onPatch).not.toHaveBeenCalled();
+  });
+
+  it('a lifecycle field that is not a select field is shown, not "auto-detect"', () => {
+    renderPanel({ ...DRAFT, stageField: 'name' });
+    expect(screen.getByTestId('stage-field-select')).toHaveTextContent('name');
+  });
+
+  it('a sharing model neither dial offers is shown, not "not set"', () => {
+    renderPanel({ ...DRAFT, sharingModel: 'full', externalSharingModel: 'read_write' });
+    expect(screen.getByTestId('owd-internal-select')).toHaveTextContent('full');
+    expect(screen.getByTestId('owd-external-select')).toHaveTextContent('read_write');
+  });
+});
+
+describe('the keyboard alone picks', () => {
+  it('Enter opens a picker and Enter on an option selects it', async () => {
+    const { onPatch } = renderPanel();
+    fireEvent.keyDown(screen.getByTestId('stage-field-select'), { key: 'Enter' });
+    const listbox = await screen.findByRole('listbox');
+    fireEvent.keyDown(within(listbox).getByRole('option', { name: 'stage' }), { key: 'Enter' });
+    expect(onPatch).toHaveBeenCalledTimes(1);
+    expect(JSON.stringify(onPatch.mock.calls[0][0])).toBe('{"stageField":"stage"}');
+  });
+});
@@ -8,6 +8,7 @@
 import { describe, it, expect, vi } from 'vitest';
 import { render, screen, fireEvent, within } from '@testing-library/react';
 import React from 'react';
+import { t } from '../metadata-admin/i18n';
 import { ObjectSettingsPanel } from './ObjectSettingsPanel';
 
 const baseDraft = {
@@ -24,14 +25,23 @@ function renderPanel(draft: Record<string, unknown>, onPatch = vi.fn()) {
   return onPatch;
 }
 
+/**
+ * The OWD dials are the shared `Select` (objectui#11865): its options exist
+ * only while it is open, so open it from the keyboard and return its list.
+ */
+async function openDial(testId: string) {
+  fireEvent.keyDown(screen.getByTestId(testId), { key: 'ArrowDown' });
+  return within(await screen.findByRole('listbox'));
+}
+
 describe('ObjectSettingsPanel — record sharing (OWD)', () => {
-  it('exposes the sharing model control with the four canonical OWD options', () => {
+  it('exposes the sharing model control with the four canonical OWD options', async () => {
     renderPanel(baseDraft);
     // The section header is present.
     expect(screen.getByText('Record sharing (OWD)')).toBeTruthy();
     // Canonical OWD options are all offered (scoped to the internal dial —
     // the external D11 dial offers the same set).
-    const internal = within(screen.getByTestId('owd-internal-select'));
+    const internal = await openDial('owd-internal-select');
     expect(internal.getByRole('option', { name: 'Private — owner only' })).toBeTruthy();
     expect(
       internal.getByRole('option', { name: 'Public read — everyone reads, only the owner writes' }),
@@ -72,35 +82,40 @@ describe('ObjectSettingsPanel — record sharing (OWD)', () => {
     expect(desc.textContent).not.toMatch(/refused/i);
   });
 
-  it('patches sharingModel when a model is picked', () => {
+  it('patches sharingModel when a model is picked', async () => {
     const onPatch = renderPanel(baseDraft);
-    const select = screen.getByTestId('owd-internal-select') as HTMLSelectElement;
-    fireEvent.change(select, { target: { value: 'private' } });
+    fireEvent.click((await openDial('owd-internal-select')).getByRole('option', { name: 'Private — owner only' }));
     expect(onPatch).toHaveBeenCalledWith({ sharingModel: 'private' });
   });
 
-  it('clears sharingModel back to unset', () => {
+  it('clears sharingModel back to unset', async () => {
     const onPatch = renderPanel({ ...baseDraft, sharingModel: 'private' });
-    const select = screen.getByDisplayValue('Private — owner only') as HTMLSelectElement;
-    fireEvent.change(select, { target: { value: '' } });
+    expect(screen.getByTestId('owd-internal-select').textContent).toBe('Private — owner only');
+    fireEvent.click(
+      (await openDial('owd-internal-select')).getByRole('option', { name: t('engine.studio.settings.sharingUnset', 'en-US') }),
+    );
     expect(onPatch).toHaveBeenCalledWith({ sharingModel: undefined });
   });
 });
 
 describe('ObjectSettingsPanel — external OWD dial (ADR-0090 D11)', () => {
-  it('renders the external dial defaulting to unset and patches externalSharingModel', () => {
+  it('renders the external dial defaulting to unset and patches externalSharingModel', async () => {
     const onPatch = renderPanel(baseDraft);
-    const select = screen.getByTestId('owd-external-select') as HTMLSelectElement;
-    expect(select.value).toBe('');
-    fireEvent.change(select, { target: { value: 'public_read' } });
+    expect(screen.getByTestId('owd-external-select').textContent).toBe(t('engine.studio.settings.sharingExternalUnset', 'en-US'));
+    fireEvent.click(
+      (await openDial('owd-external-select')).getByRole('option', {
+        name: 'Public read — everyone reads, only the owner writes',
+      }),
+    );
     expect(onPatch).toHaveBeenCalledWith({ externalSharingModel: 'public_read' });
   });
 
-  it('clears externalSharingModel back to unset', () => {
+  it('clears externalSharingModel back to unset', async () => {
     const onPatch = renderPanel({ ...baseDraft, externalSharingModel: 'private' });
-    const select = screen.getByTestId('owd-external-select') as HTMLSelectElement;
-    expect(select.value).toBe('private');
-    fireEvent.change(select, { target: { value: '' } });
+    expect(screen.getByTestId('owd-external-select').textContent).toBe('Private — owner only');
+    fireEvent.click(
+      (await openDial('owd-external-select')).getByRole('option', { name: t('engine.studio.settings.sharingExternalUnset', 'en-US') }),
+    );
     expect(onPatch).toHaveBeenCalledWith({ externalSharingModel: undefined });
   });