@@ -0,0 +1,10 @@
+---
+'@object-ui/app-shell': patch
+---
+
+fix(app-shell): a Studio list view's sort on a date field reads Oldest → Newest
+
+Clause-②: no
+Metadata-protocol: none
+
+The list-view panel in Studio now hands the sort builder each field's type, as the console list already does. A sort row on a `date` or `datetime` field names its direction "Oldest → Newest" / "Newest → Oldest" instead of "A → Z" / "Z → A". Text and other fields read as before; what is saved is unchanged.
@@ -0,0 +1,162 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * objectstack#27520 row 7, the Studio half — a list view's sort on a date
+ * field names its direction as time.
+ *
+ * #28423 taught `SortBuilder` to read "Oldest → Newest" for a `date` or
+ * `datetime` row when its `fields` carry `type`, and the console list passes
+ * it. Studio's list-view panel handed the builder `{ value, label }` only, so
+ * the same sort on the same field still read "A → Z" there.
+ *
+ * The REAL hook (`useObjectListViewDraft`), the REAL panel, the REAL
+ * `useObjectFields` over a REAL `MetadataClient` and the REAL `SortBuilder`.
+ *
+ * Pinned:
+ *  - a `date` row reads "Oldest → Newest", a `datetime` row "Newest → Oldest";
+ *  - CONTROL: a text row still reads "A → Z".
+ */
+
+import '@testing-library/jest-dom/vitest';
+import * as React from 'react';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { act, cleanup, fireEvent, render, screen, within } from '@testing-library/react';
+import { MetadataCtx, type MetadataContextValue } from '@object-ui/react';
+import { MetadataClient } from '@object-ui/data-objectstack';
+
+const PKG = 'com.acme.app';
+const VIEW = 'acme_loan.default';
+
+const OBJECT_DEF = {
+  name: 'acme_loan',
+  label: 'Loan',
+  fields: {
+    book: { name: 'book', label: 'Book', type: 'text' },
+    opened_on: { name: 'opened_on', label: 'Opened on', type: 'date' },
+    approved_at: { name: 'approved_at', label: 'Approved at', type: 'datetime' },
+  },
+};
+
+const gridView = (extra: Record<string, unknown> = {}) => ({
+  name: VIEW,
+  object: 'acme_loan',
+  viewKind: 'list',
+  isDefault: true,
+  config: { type: 'grid', data: { provider: 'object', object: 'acme_loan' }, columns: ['book'], ...extra },
+});
+
+const server = { active: new Map<string, Record<string, unknown>>() };
+
+const json = (status: number, body: unknown) =>
+  new Response(JSON.stringify(body), { status, headers: { 'Content-Type': 'application/json' } });
+
+async function serve(input: RequestInfo | URL, init?: RequestInit): Promise<Response> {
+  const method = (init?.method ?? 'GET').toUpperCase();
+  const url = new URL(String(input), 'http://studio.test');
+  const meta = url.pathname.match(/^\/api\/v1\/meta\/(.+)$/);
+  if (!meta) return json(404, { error: { code: 'NOT_FOUND', message: 'absent' } });
+  const seg = meta[1].split('/').map(decodeURIComponent);
+  const key = `${seg[0]}/${seg[1]}`;
+  if (seg[0] === '_drafts') return json(200, { drafts: [] });
+  if (method === 'PUT') return json(200, { success: true, version: 'v2', state: 'draft' });
+  if (seg[0] === 'object' && seg.length === 2) return json(200, { type: 'object', name: seg[1], item: OBJECT_DEF });
+  if (seg.length === 3 && seg[2] === 'layers') {
+    const row = server.active.get(key);
+    return row
+      ? json(200, { code: null, overlay: row, overlayScope: 'env', effective: row })
+      : json(404, { error: { code: 'NOT_FOUND', message: 'absent' } });
+  }
+  // No view draft is pending in this suite.
+  if (seg.length === 2 && url.searchParams.get('state') === 'draft') {
+    return json(404, { error: { code: 'NO_DRAFT', message: 'absent' } });
+  }
+  const row = server.active.get(key);
+  return row ? json(200, { type: seg[0], name: seg[1], item: row }) : json(404, { error: { code: 'NOT_FOUND', message: 'absent' } });
+}
+
+const client = new MetadataClient({ baseUrl: '', fetch: vi.fn(serve) as unknown as typeof fetch });
+
+vi.mock('../metadata-admin/useMetadata', async (importOriginal) => {
+  const mod = await importOriginal<typeof import('../metadata-admin/useMetadata')>();
+  return { ...mod, useMetadataClient: () => client };
+});
+
+import { ObjectListViewInspector, useObjectListViewDraft } from './ObjectListViewInspector';
+import type { Surface } from './navSurface';
+
+const METADATA: MetadataContextValue = {
+  apps: [],
+  objects: [OBJECT_DEF],
+  dashboards: [],
+  reports: [],
+  pages: [],
+  loading: false,
+  error: null,
+  refresh: async () => {},
+  invalidate: () => {},
+  ensureType: async () => [],
+  getItem: async () => null,
+  getItemsByType: () => [],
+};
+
+const LEAF: Surface = { type: 'object', name: 'acme_loan', label: 'Loans' };
+
+function Host() {
+  const listView = useObjectListViewDraft({ client, packageId: PKG, leaf: LEAF, publishNonce: 0 });
+  return <ObjectListViewInspector listView={listView} readOnly={false} locale="en" />;
+}
+
+async function settle() {
+  await act(async () => {
+    for (let i = 0; i < 25; i++) await new Promise((r) => setTimeout(r, 0));
+  });
+}
+
+async function openPanel(): Promise<HTMLElement> {
+  render(
+    <MetadataCtx.Provider value={METADATA}>
+      <Host />
+    </MetadataCtx.Provider>,
+  );
+  await settle();
+  return screen.getByTestId('studio-list-view-inspector');
+}
+
+
+/** The sort popover's direction triggers, one per row, in row order. */
+async function directionTriggers(panel: HTMLElement): Promise<HTMLElement[]> {
+  fireEvent.click(within(panel).getByTestId('list-view-sort-trigger'));
+  const popover = await screen.findByRole('dialog');
+  // Each row draws two comboboxes: its field, then its direction.
+  return within(popover)
+    .getAllByRole('combobox')
+    .filter((_, i) => i % 2 === 1);
+}
+
+beforeEach(() => {
+  server.active.clear();
+});
+afterEach(cleanup);
+
+describe('ObjectListViewInspector — a date sort reads Oldest → Newest (objectstack#27520)', () => {
+  it('a `date` row reads "Oldest → Newest" and a `datetime` row "Newest → Oldest"', async () => {
+    server.active.set(
+      `view/${VIEW}`,
+      gridView({
+        sort: [
+          { field: 'opened_on', order: 'asc' },
+          { field: 'approved_at', order: 'desc' },
+        ],
+      }),
+    );
+    const [date, datetime] = await directionTriggers(await openPanel());
+    expect(date).toHaveTextContent('Oldest → Newest');
+    expect(datetime).toHaveTextContent('Newest → Oldest');
+  });
+
+  it('CONTROL: a text row still reads "A → Z"', async () => {
+    server.active.set(`view/${VIEW}`, gridView({ sort: [{ field: 'book', order: 'asc' }] }));
+    const [text] = await directionTriggers(await openPanel());
+    expect(text).toHaveTextContent('A → Z');
+  });
+});
@@ -1487,7 +1487,8 @@ export function ObjectListViewInspector({
                 </PopoverTrigger>
                 <PopoverContent align="start" className="w-[440px] max-w-[90vw] p-3">
                   <SortBuilder
-                    fields={fields.map((f) => ({ value: f.name, label: f.label }))}
+                    // objectstack#27520 — the type lets a date row read "Oldest → Newest".
+                    fields={fields.map((f) => ({ value: f.name, label: f.label, type: f.type }))}
                     value={sort.map((s, i) => ({ id: `${i}`, ...s }))}
                     onChange={(items: SortItem[]) => {
                       // The builder's row `id` is a React key: the spec refuses it on