diff --git a/.changeset/12625-record-page-names.md b/.changeset/12625-record-page-names.md
new file mode 100644
index 0000000000..963c798710
--- /dev/null
+++ b/.changeset/12625-record-page-names.md
@@ -0,0 +1,5 @@
+---
+'@object-ui/plugin-detail': patch
+---
+
+Record page sections: a collapsible section's header is now a real button named by the section title (objectui#12625). It carries `aria-expanded`, is reachable by Tab, and Enter or Space toggles it; a click anywhere on the header still toggles as before. The per-field copy-value icon button is named "Copy to clipboard". A non-collapsible section's header is unchanged.
diff --git a/packages/app-shell/src/layout/__tests__/AppSwitcher.accessibleName-12625.test.tsx b/packages/app-shell/src/layout/__tests__/AppSwitcher.accessibleName-12625.test.tsx
new file mode 100644
index 0000000000..f093a0d1e3
--- /dev/null
+++ b/packages/app-shell/src/layout/__tests__/AppSwitcher.accessibleName-12625.test.tsx
@@ -0,0 +1,32 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * objectui#12625 — the app pill is a button whose accessible name carries the
+ * app's name, read through the REAL dropdown trigger (no primitive mocks), so
+ * a restyle that moves the label into an `aria-hidden` span, or drops the
+ * `title` the glyph-only phone pill is named by, turns this red.
+ */
+
+import '@testing-library/jest-dom/vitest';
+import { describe, expect, it, vi } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import { MemoryRouter } from 'react-router-dom';
+
+vi.mock('../../providers/MetadataProvider', () => ({
+  useMetadata: () => ({ apps: [{ name: 'hotcrm', label: 'HotCRM', icon: 'flame' }] }),
+}));
+
+import { AppSwitcher } from '../AppSwitcher';
+
+describe('the app pill is named by the app (objectui#12625)', () => {
+  it('resolves by role and the app name, and its title names the app too', () => {
+    render(
+      <MemoryRouter>
+        <AppSwitcher activeAppName="hotcrm" onAppChange={vi.fn()} />
+      </MemoryRouter>,
+    );
+    const pill = screen.getByRole('button', { name: /HotCRM/ });
+    expect(pill).toHaveAttribute('data-testid', 'app-switcher-trigger');
+    expect(pill).toHaveAttribute('title', 'HotCRM');
+  });
+});
diff --git a/packages/app-shell/src/views/RecordDetailView.accessibleNames-12625.test.tsx b/packages/app-shell/src/views/RecordDetailView.accessibleNames-12625.test.tsx
new file mode 100644
index 0000000000..6b20296adc
--- /dev/null
+++ b/packages/app-shell/src/views/RecordDetailView.accessibleNames-12625.test.tsx
@@ -0,0 +1,195 @@
+/**
+ * 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.
+ */
+
+/**
+ * objectui#12625 — the console record page's controls have accessible names,
+ * read on the REAL `RecordDetailView` mount (the synthesized default page:
+ * `page:header`, `page:tabs`, `record:details`), by role and name.
+ *
+ * - The tabs are named by their labels (Details, Related).
+ * - A declared `record_header` action is named by its label (Log a Call).
+ * - A collapsible field group's header is a button named by its label
+ *   (Lead Information) that toggles `aria-expanded` — the half the card found
+ *   really broken (`DetailSection`'s header was a div with no role).
+ *
+ * The tabs and the header actions were already named on main when this was
+ * written; they are regression pins, so a restyle that moves a label into an
+ * `aria-hidden` span turns this file red.
+ */
+
+import * as React from 'react';
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { render, waitFor, screen, cleanup } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import '@testing-library/jest-dom';
+import { MemoryRouter } from 'react-router-dom';
+
+vi.mock('@object-ui/auth', async (importOriginal) => ({
+  ...(await importOriginal<Record<string, unknown>>()),
+  useAuth: () => ({ user: { id: 'u1', name: 'Ada', image: null }, activeOrganization: null }),
+  createAuthenticatedFetch: () => vi.fn(),
+}));
+
+vi.mock('@object-ui/collaboration', async (importOriginal) => ({
+  ...(await importOriginal<Record<string, unknown>>()),
+  useRecordPresence: () => [],
+  PresenceAvatars: () => null,
+}));
+
+vi.mock('sonner', () => ({
+  toast: Object.assign(vi.fn(), {
+    success: vi.fn(),
+    error: vi.fn(),
+    info: vi.fn(),
+    warning: vi.fn(),
+    loading: vi.fn(),
+    dismiss: vi.fn(),
+  }),
+}));
+
+// Orthogonal chrome — same posture as RecordDetailView.headerActionLookupPredicate.test.
+vi.mock('./ActionConfirmDialog', () => ({ ActionConfirmDialog: () => null }));
+vi.mock('./ActionParamDialog', () => ({ ActionParamDialog: () => null }));
+vi.mock('./ActionResultDialog', () => ({ ActionResultDialog: () => null }));
+vi.mock('./FlowRunner', () => ({ FlowRunner: () => null }));
+vi.mock('./MetadataInspector', () => ({
+  MetadataPanel: () => null,
+  useMetadataInspector: () => ({ showDebug: false, toggle: () => {} }),
+}));
+
+import { MetadataCtx } from '@object-ui/react';
+import { RecordDetailView } from './RecordDetailView';
+import { ExpressionProvider } from '../providers/ExpressionProvider';
+
+const headerAction = (name: string, label: string) => ({
+  name,
+  label,
+  type: 'api',
+  target: '/api/v1/noop',
+  locations: ['record_header'],
+});
+
+const LEAD = {
+  name: 'lead',
+  label: 'Lead',
+  managedBy: 'platform',
+  // One declared, ungrouped highlight keeps the heuristic strip from claiming
+  // the grouped fields (see defaultFieldGroupsPage.sectionHeadings.test).
+  highlightFields: ['name'],
+  fieldGroups: [
+    { key: 'info', label: 'Lead Information', collapsible: true },
+    { key: 'addr', label: 'Address' },
+  ],
+  fields: {
+    id: { type: 'text', label: 'Id' },
+    name: { type: 'text', label: 'Name' },
+    company: { type: 'text', label: 'Company', group: 'info' },
+    city: { type: 'text', label: 'City', group: 'addr' },
+  },
+  actions: [
+    headerAction('log_call', 'Log a Call'),
+    headerAction('log_meeting', 'Log a Meeting'),
+    headerAction('schedule_meeting', 'Schedule a Meeting'),
+  ],
+};
+
+/** A child with a lookup to the lead, so the page carries a Related tab. */
+const TASK = {
+  name: 'task',
+  label: 'Task',
+  fields: {
+    id: { type: 'text' },
+    subject: { type: 'text', label: 'Subject' },
+    lead: { type: 'lookup', reference: 'lead', label: 'Lead' },
+  },
+};
+
+async function mountLeadPage() {
+  const objects = [LEAD, TASK];
+  const findOne = vi.fn(async () => ({ id: 'L1', name: 'Ada', company: 'Acme', city: 'Paris' }));
+  const dataSource = {
+    find: vi.fn(async () => ({ data: [] })),
+    findOne,
+    create: vi.fn(async () => ({})),
+    update: vi.fn(async () => ({})),
+    delete: vi.fn(async () => ({})),
+  } as never;
+  const metadata = {
+    objects,
+    pages: [],
+    loading: false,
+    error: null,
+    refresh: async () => {},
+    invalidate: () => {},
+    ensureType: async () => [],
+    getItem: async () => null,
+    getItemsByType: () => [],
+  } as never;
+  render(
+    <MemoryRouter initialEntries={['/apps/crm/lead/L1']}>
+      <MetadataCtx.Provider value={metadata}>
+        <ExpressionProvider user={{ id: 'u1', name: 'Ada' }} app={{ name: 'crm' }} data={{}} features={{}}>
+          <RecordDetailView
+            dataSource={dataSource}
+            objects={objects}
+            onEdit={() => {}}
+            objectNameOverride="lead"
+            recordIdOverride="L1"
+          />
+        </ExpressionProvider>
+      </MetadataCtx.Provider>
+    </MemoryRouter>,
+  );
+  await waitFor(() => expect(findOne).toHaveBeenCalled());
+  await screen.findByRole('button', { name: 'Lead Information' });
+}
+
+beforeEach(() => {
+  cleanup();
+  vi.stubGlobal(
+    'fetch',
+    vi.fn(async () =>
+      new Response(JSON.stringify({ data: [] }), {
+        status: 200,
+        headers: { 'content-type': 'application/json' },
+      }),
+    ),
+  );
+});
+
+afterEach(() => {
+  vi.unstubAllGlobals();
+  vi.clearAllMocks();
+});
+
+describe('objectui#12625 — the record page names its tabs, header actions and section headers', () => {
+  it('the tabs are named by their labels', async () => {
+    await mountLeadPage();
+    expect(screen.getByRole('tab', { name: 'Details' })).toBeInTheDocument();
+    expect(screen.getByRole('tab', { name: 'Related' })).toBeInTheDocument();
+  });
+
+  it('the header actions are named by their labels', async () => {
+    await mountLeadPage();
+    expect(screen.getByRole('button', { name: 'Log a Call' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Log a Meeting' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Schedule a Meeting' })).toBeInTheDocument();
+  });
+
+  it('the collapsible field group header is a button named by its label that toggles', async () => {
+    const user = userEvent.setup();
+    await mountLeadPage();
+    const header = screen.getByRole('button', { name: 'Lead Information' });
+    expect(header).toHaveAttribute('aria-expanded', 'true');
+    await user.click(header);
+    expect(header).toHaveAttribute('aria-expanded', 'false');
+    // CONTROL: the non-collapsible group shows its heading but is no button.
+    expect(screen.getByText('Address')).toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: 'Address' })).toBeNull();
+  });
+});
diff --git a/packages/components/src/__tests__/iconOnlyButtonCensus-12143.test.ts b/packages/components/src/__tests__/iconOnlyButtonCensus-12143.test.ts
index d2380f3bcf..c6afc75dc8 100644
--- a/packages/components/src/__tests__/iconOnlyButtonCensus-12143.test.ts
+++ b/packages/components/src/__tests__/iconOnlyButtonCensus-12143.test.ts
@@ -242,7 +242,6 @@ const BACKLOG: Array<[file: string, icons: string[]]> = [
   ['packages/plugin-ai/src/AIRecommendations.tsx', ['ExternalLink', 'X', 'ThumbsUp', 'ThumbsDown']],
   ['packages/plugin-chatbot/src/elements/conversation.tsx', ['ArrowDownIcon']],
   ['packages/plugin-chatbot/src/index.tsx', ['Send']],
-  ['packages/plugin-detail/src/DetailSection.tsx', ['Check | Copy']],
   ['packages/plugin-detail/src/DetailView.tsx', ['ArrowLeft', 'ChevronLeft', 'ChevronRight']],
   ['packages/plugin-detail/src/RecordComments.tsx', ['Send']],
   ['packages/plugin-list/src/ListView.tsx', ['X']],
diff --git a/packages/plugin-detail/src/DetailSection.tsx b/packages/plugin-detail/src/DetailSection.tsx
index 856ef124f6..b7a68542dc 100644
--- a/packages/plugin-detail/src/DetailSection.tsx
+++ b/packages/plugin-detail/src/DetailSection.tsx
@@ -669,6 +669,9 @@ export const DetailSection: React.FC<DetailSectionProps> = ({
                     variant="ghost"
                     size="icon"
                     className="h-6 w-6 opacity-0 group-hover:opacity-100 transition-opacity shrink-0"
+                    // objectui#12625 — an icon-only button; the tooltip is
+                    // closed at rest, so without this it has no name.
+                    aria-label={t('detail.copyToClipboard')}
                     onClick={(e) => {
                       e.stopPropagation();
                       handleCopyField(field.name, value);
@@ -821,29 +824,45 @@ export const DetailSection: React.FC<DetailSectionProps> = ({
         different behaviour, unmeasured by that card.
       */}
       <Card className={cn(section.showBorder === false ? 'border-none shadow-none' : '')}>
-        <CollapsibleTrigger asChild>
-          <CardHeader className={cn(
-            "py-3 px-4 sm:py-4 sm:px-6 cursor-pointer hover:bg-muted/50 transition-colors",
-            headerColorClass(section.headerColor)
-          )}>
-            <CardTitle className="flex items-center justify-between text-base font-semibold tracking-tight">
-              <div className="flex items-center gap-2">
-                {section.icon && <SectionIcon name={section.icon} />}
-                <span>{section.title}</span>
-              </div>
-              <div className="flex items-center gap-2">
-                {isCollapsed ? (
-                  <ChevronRight className="h-4 w-4 text-muted-foreground" />
-                ) : (
-                  <ChevronDown className="h-4 w-4 text-muted-foreground" />
-                )}
-              </div>
-            </CardTitle>
-            {section.description && !isCollapsed && (
-              <p className="text-xs text-muted-foreground mt-1">{section.description}</p>
-            )}
-          </CardHeader>
-        </CollapsibleTrigger>
+        {/*
+          objectui#12625 — the disclosure is a NATIVE button inside the
+          header, not the header itself. `CollapsibleTrigger asChild` on the
+          `CardHeader` div used to hand the div `aria-expanded` and a click
+          handler but no role and no tabindex: the section title was not a
+          button in the accessibility tree and a keyboard user could not reach
+          or toggle it. The button takes its name from the section title,
+          carries `aria-expanded`, and Enter / Space toggle it natively. Its
+          `after:` overlay spans the (now `relative`) header, so a click
+          anywhere on the header still toggles, as before.
+        */}
+        <CardHeader className={cn(
+          "relative py-3 px-4 sm:py-4 sm:px-6 cursor-pointer hover:bg-muted/50 transition-colors",
+          headerColorClass(section.headerColor)
+        )}>
+          <CardTitle className="text-base font-semibold tracking-tight">
+            <CollapsibleTrigger asChild>
+              <button
+                type="button"
+                className="flex w-full items-center justify-between text-left rounded-sm focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 after:absolute after:inset-0"
+              >
+                <span className="flex items-center gap-2">
+                  {section.icon && <SectionIcon name={section.icon} />}
+                  <span>{section.title}</span>
+                </span>
+                <span className="flex items-center gap-2">
+                  {isCollapsed ? (
+                    <ChevronRight className="h-4 w-4 text-muted-foreground" aria-hidden />
+                  ) : (
+                    <ChevronDown className="h-4 w-4 text-muted-foreground" aria-hidden />
+                  )}
+                </span>
+              </button>
+            </CollapsibleTrigger>
+          </CardTitle>
+          {section.description && !isCollapsed && (
+            <p className="text-xs text-muted-foreground mt-1">{section.description}</p>
+          )}
+        </CardHeader>
         <CollapsibleContent>
           <CardContent className="pt-3 sm:pt-4 px-3 sm:px-6 pb-4 sm:pb-5">
             {content}
diff --git a/packages/plugin-detail/src/__tests__/DetailSection.accessibleNames-12625.test.tsx b/packages/plugin-detail/src/__tests__/DetailSection.accessibleNames-12625.test.tsx
new file mode 100644
index 0000000000..2a23f034ad
--- /dev/null
+++ b/packages/plugin-detail/src/__tests__/DetailSection.accessibleNames-12625.test.tsx
@@ -0,0 +1,93 @@
+/**
+ * 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.
+ */
+
+/**
+ * objectui#12625 — a record section's controls have accessible names.
+ *
+ * - A COLLAPSIBLE section's header is a native button named by the section
+ *   title. It carries `aria-expanded`, and a click, Enter and Space each
+ *   toggle it. Before the fix `CollapsibleTrigger asChild` sat on the
+ *   `CardHeader` div: the div got `aria-expanded` and a click handler but no
+ *   role and no tabindex, so no button by that name existed and a keyboard
+ *   user could not reach the toggle.
+ * - The per-field copy-value icon button is named by `detail.copyToClipboard`
+ *   (its tooltip is closed at rest, so it had no name).
+ *
+ * CONTROL: a titled, NON-collapsible section renders its title and no button
+ * by that name — the header stays a plain heading there.
+ */
+
+import React from 'react';
+import { describe, it, expect, afterEach } from 'vitest';
+import { render, screen, cleanup } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import type { DetailViewSection } from '@object-ui/types';
+
+import { DetailSection } from '../DetailSection';
+
+const RECORD = { company: 'Acme', city: 'Paris' };
+
+const section = (overrides: Record<string, unknown>) =>
+  ({
+    title: 'Lead Information',
+    fields: [
+      { name: 'company', label: 'Company' },
+      { name: 'city', label: 'City' },
+    ],
+    ...overrides,
+  }) as unknown as DetailViewSection;
+
+afterEach(() => {
+  cleanup();
+});
+
+describe('objectui#12625 — the collapsible section header is a named button', () => {
+  it('is a button named by the section title, expanded at rest, toggled by a click', async () => {
+    const user = userEvent.setup();
+    render(<DetailSection section={section({ collapsible: true })} data={RECORD} />);
+    const header = screen.getByRole('button', { name: 'Lead Information' });
+    expect(header.tagName).toBe('BUTTON');
+    expect(header).toHaveAttribute('type', 'button');
+    expect(header).toHaveAttribute('aria-expanded', 'true');
+    await user.click(header);
+    expect(header).toHaveAttribute('aria-expanded', 'false');
+    await user.click(header);
+    expect(header).toHaveAttribute('aria-expanded', 'true');
+  });
+
+  it('is reachable by Tab and toggled by Enter and by Space', async () => {
+    const user = userEvent.setup();
+    render(<DetailSection section={section({ collapsible: true })} data={RECORD} />);
+    const header = screen.getByRole('button', { name: 'Lead Information' });
+    await user.tab();
+    expect(header).toHaveFocus();
+    await user.keyboard('{Enter}');
+    expect(header).toHaveAttribute('aria-expanded', 'false');
+    await user.keyboard(' ');
+    expect(header).toHaveAttribute('aria-expanded', 'true');
+  });
+
+  it('honours defaultCollapsed: the button reads collapsed', () => {
+    render(<DetailSection section={section({ collapsible: true, defaultCollapsed: true })} data={RECORD} />);
+    expect(screen.getByRole('button', { name: 'Lead Information' })).toHaveAttribute('aria-expanded', 'false');
+  });
+
+  it('CONTROL: a non-collapsible titled section draws its title and no header button', () => {
+    render(<DetailSection section={section({ collapsible: false })} data={RECORD} />);
+    expect(screen.getByText('Lead Information')).toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: 'Lead Information' })).toBeNull();
+    expect(document.querySelector('[aria-expanded]')).toBeNull();
+  });
+});
+
+describe('objectui#12625 — the copy-value icon button is named', () => {
+  it('each read-only field offers a button named "Copy to clipboard"', () => {
+    render(<DetailSection section={section({ collapsible: false })} data={RECORD} />);
+    expect(screen.getAllByRole('button', { name: 'Copy to clipboard' })).toHaveLength(2);
+  });
+});