@@ -0,0 +1,15 @@
+---
+'@objectstack/service-print': patch
+---
+
+feat(service-print): a record prints on any print page of its object, not only on the default record page
+
+Clause-②: yes (widening)
+Metadata-protocol: none
+
+`printRecordToFile` (and `POST /api/v1/print/records`) used to refuse every page that was not the object's default record page (`VALIDATION_ERROR` / 400), so an app that printed an object had to turn that object's everyday record page into the printed document. A record now prints on any record page of its object that declares `print`:
+
+- **The default record page** (`isDefault: true`) renders on the console's record route, `CONSOLE/apps/APP/OBJECT/record/ID`, as before.
+- **Any other print page** renders on the console's named record-page route, `CONSOLE/apps/APP/OBJECT/record/ID/page/PAGE`, which draws that page and never falls back to the default one. An object keeps its working record page and adds its documents (an invoice, a quote, a delivery note) beside it.
+
+Two refusals remain, both `VALIDATION_ERROR` / 400 before anything is minted or rendered: the page is not a record page of the object, and the page declares no `print`. "A record page of the object" is the console's own reading (`type: 'record'` and that `object`), so the server prints exactly the pages the console's named route draws. An unknown page name is still `RESOURCE_NOT_FOUND` / 404. No metadata key is added or changed: the request already names its page.
@@ -28,8 +28,7 @@ export const InvoiceDocumentPage = definePage({
   label: 'Invoice',
   type: 'record',
   object: 'invoice',
-  kind: 'full',
-  isDefault: true,          // the console renders a record on its default record page
+  kind: 'full',             // not isDefault: the invoice keeps its own working record page
   print: { paperSize: 'A4', orientation: 'portrait', repeatHeader: true, pageNumbers: true },
   regions: [
     { name: 'header', components: [{ type: 'element:text', properties: { content: 'ACME Ltd' } }] },
@@ -40,9 +39,15 @@ export const InvoiceDocumentPage = definePage({
 // …and on the object: enable: { files: true }
 ```
 
-The server prints a record on the page the console renders it on, which is the
-object's **default record page** (`isDefault: true`). A print page that is not
-the default is refused rather than printed as some other page.
+A record prints on **any record page of its object that declares `print`**, so
+an object keeps its everyday record page and adds one or more documents beside
+it (an invoice, a delivery note, a quote). The server renders the page the
+request names on the console's own routes: the object's default record page
+(`isDefault: true`) on the record route, `…/OBJECT/record/ID`, and any other
+print page on the named record-page route, `…/OBJECT/record/ID/page/PAGE`. A
+page that is not a record page of the object (`type: 'record'` with that
+`object`), or that declares no `print`, is refused rather than printed as some
+other page.
 
 ## Compose the print service
 
@@ -153,7 +158,7 @@ before a session is minted or a browser is started, in this order:
 | 1 | The caller is not a signed-in user acting for themselves (system, agent, service or guest principal; a sign-in held by an authentication policy) | `PERMISSION_DENIED` / 403 |
 | 2 | The engine is not ready (`status()` says why) | `SERVICE_UNAVAILABLE` / 503 |
 | 3 | No such page | `RESOURCE_NOT_FOUND` / 404 |
-| 3 | The page is not the object's default record page, or declares no `print` | `VALIDATION_ERROR` / 400 |
+| 3 | The page is not a record page of the object (`type: 'record'`, that `object`), or declares no `print` | `VALIDATION_ERROR` / 400 |
 | 4 | The record does not exist, or the caller cannot read it | `RECORD_NOT_FOUND` / 404 |
 | 5 | The object does not declare `enable: { files: true }` | `FILES_DISABLED` / 403 |
 | 5 | The caller may not create attachments at all | `PERMISSION_DENIED` / 403 |
 
@@ -9,9 +9,10 @@ import { definePage } from '@objectstack/spec/ui';
  * the requesting user, and archives the PDF as a file attached to the invoice
  * (`showcase_invoice` declares `enable: { files: true }` for that).
  *
- * It is the invoice's DEFAULT record page (`isDefault: true`) because the
- * console renders a record on its default record page, so that is the page a
- * record prints on. Every block is from the printable subset
+ * It is the invoice's DEFAULT record page (`isDefault: true`), so the invoice
+ * opens on its document. That is this app's choice, not a rule: a record prints
+ * on any print page of its object, and one that is not the default renders on
+ * the console's named record-page route. Every block is from the printable subset
  * (`PRINTABLE_PAGE_COMPONENT_TYPES`): the header and footer regions are the
  * letterhead and the footer, repeated on every sheet, and `record:line_items`
  * prints every line up to its cap.
 
@@ -0,0 +1,30 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+//
+// The print page the named-page print dogfood files save (#26583): a project
+// brief for `showcase_project`, beside the project's own default record page
+// (`showcase_project_detail`, a working page with no `print`). Every block is
+// from the printable subset, so the metadata save door accepts it.
+
+/** The project's print page: not its default record page, which stays the working page. */
+export const PROJECT_BRIEF_PAGE = {
+  name: 'showcase_project_brief',
+  label: 'Project brief',
+  type: 'record',
+  object: 'showcase_project',
+  kind: 'full',
+  print: { paperSize: 'A4', orientation: 'portrait', pageNumbers: true },
+  regions: [
+    { name: 'header', components: [{ type: 'element:text', properties: { content: 'Project brief' } }] },
+    {
+      name: 'main',
+      components: [
+        {
+          type: 'record:details',
+          properties: {
+            sections: [{ name: 'brief', label: 'Brief', columns: 2, fields: ['name', 'status', 'start_date', 'end_date'] }],
+          },
+        },
+      ],
+    },
+  ],
+} as const;
@@ -0,0 +1,161 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+//
+// A record printed on a print page that is NOT its object's default record
+// page (#26583, ruling A), on a real showcase boot.
+//
+// `showcase_project` keeps its everyday record page, `showcase_project_detail`
+// (the default, a slotted working page with no `print`). A second page, a
+// project brief that declares `print`, is saved through the metadata save door
+// the way an author adds one, beside it. The print service, over the real
+// kernel services, then:
+//
+//  - prints a project on the brief, rendering the console's named record-page
+//    route (`…/record/ID/page/PAGE`, `RECORD_NAMED_PAGE_ROUTE`), and archives
+//    the PDF on the project as the requester;
+//  - still refuses the working page (it declares no `print`) and a print page
+//    of another object, `VALIDATION_ERROR` / 400, before anything is minted.
+//
+// The browser and the auth mint are stood in by recording doubles, as in
+// `print-service-archive.dogfood.test.ts`; the console route itself is drawn
+// against a real Chromium in `print-service-render.dogfood.test.ts`.
+
+import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
+import { mkdtempSync, rmSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import type { VerifyStack } from '@objectstack/verify';
+import { StorageServicePlugin } from '@objectstack/service-storage';
+import { AuditPlugin } from '@objectstack/plugin-audit';
+import { bootShowcase } from './showcase-boot.js';
+import { PrintServicePlugin } from '../../../services/service-print/src/print-service-plugin.js';
+import { PrintService, type PrintEngine } from '../../../services/service-print/src/print-service.js';
+import { FILE_ATTACHMENT_SERVICE, type IDataEngine, type IFileAttachmentService } from '@objectstack/spec/contracts';
+import { PROJECT_BRIEF_PAGE } from './print-named-page.fixture.js';
+
+const SYS = { isSystem: true } as const;
+const CONSOLE = 'http://127.0.0.1:1/_console';
+const PDF = Buffer.from('%PDF-1.4\n% named print page dogfood\n%%EOF\n');
+const PRINT_ENV = ['OS_PRINT_CHROMIUM_PATH', 'OS_PRINT_BROWSER_ENDPOINT', 'OS_PRINT_CONSOLE_URL'];
+
+interface Refusal {
+  code: unknown;
+  status: unknown;
+}
+
+async function refusalOf(p: Promise<unknown>): Promise<Refusal> {
+  try {
+    await p;
+  } catch (err) {
+    return { code: (err as Refusal).code, status: (err as Refusal).status };
+  }
+  throw new Error('expected a refusal, the call resolved');
+}
+
+describe('a record printed on a print page that is not its object’s default record page', () => {
+  let stack: VerifyStack;
+  let rootDir: string;
+  let ql: IDataEngine;
+  let service: PrintService;
+  let project: string;
+  const saved: Record<string, string | undefined> = {};
+  const revoke = vi.fn(async () => undefined);
+  const mint = vi.fn(async () => ({
+    token: 'stand-in-token',
+    cookie: { name: 'stand-in', value: 'stand-in-cookie', path: '/', httpOnly: true, secure: false },
+    revoke,
+  }));
+  const renderPdf = vi.fn(async () => PDF);
+
+  beforeAll(async () => {
+    for (const k of PRINT_ENV) {
+      saved[k] = process.env[k];
+      delete process.env[k];
+    }
+    rootDir = mkdtempSync(join(tmpdir(), 'print-named-page-'));
+    stack = await bootShowcase({
+      extraPlugins: [
+        new StorageServicePlugin({ adapter: 'local', local: { rootDir }, bindToSettings: false }),
+        new AuditPlugin(),
+        new PrintServicePlugin(),
+      ],
+    });
+    ql = stack.kernel.getService<IDataEngine>('objectql');
+    // The brief is added the way an author adds a page: through the metadata save door.
+    const protocol = await stack.kernel.getServiceAsync<{ saveMetaItem(r: Record<string, unknown>): Promise<unknown> }>('protocol');
+    await protocol.saveMetaItem({ type: 'page', name: PROJECT_BRIEF_PAGE.name, item: PROJECT_BRIEF_PAGE });
+    const [seeded] = await ql.find('showcase_project', { limit: 1 }, { context: SYS });
+    project = String(seeded!.id);
+
+    service = new PrintService({
+      placement: { state: 'configured', resolved: { placement: 'local', target: '/stand-in/chromium', consoleUrl: CONSOLE } },
+      driver: { placement: 'local', probe: async () => ({ version: 'stand-in' }), renderPdf },
+      getEngine: () => stack.kernel.getService<PrintEngine>('objectql'),
+      getAttachments: () => stack.kernel.getService<IFileAttachmentService>(FILE_ATTACHMENT_SERVICE),
+      getMinter: () => ({ mint }),
+    });
+    await service.probe();
+  }, 180_000);
+
+  afterAll(async () => {
+    await stack?.stop();
+    if (rootDir) rmSync(rootDir, { recursive: true, force: true });
+    for (const k of PRINT_ENV) {
+      if (saved[k] === undefined) delete process.env[k];
+      else process.env[k] = saved[k];
+    }
+  });
+
+  const request = (page: string, object = 'showcase_project', recordId = project) => ({ app: 'showcase', object, recordId, page });
+
+  it('precondition: the project keeps its working default record page, and the brief is a second page beside it', () => {
+    const engine = stack.kernel.getService<PrintEngine>('objectql');
+    expect(engine.registry.getItem<Record<string, unknown>>('page', 'showcase_project_detail')).toMatchObject({
+      object: 'showcase_project',
+      isDefault: true,
+    });
+    expect(engine.registry.getItem<Record<string, unknown>>('page', 'showcase_project_detail')?.print).toBeUndefined();
+    const brief = engine.registry.getItem<Record<string, unknown>>('page', PROJECT_BRIEF_PAGE.name);
+    expect(brief).toMatchObject({ type: 'record', object: 'showcase_project', print: { paperSize: 'A4' } });
+    expect(brief?.isDefault).toBeUndefined();
+  });
+
+  it('prints the project on the brief through the console’s named record-page route, archived as the requester', async () => {
+    const ctx = await stack.contextFor(await stack.signIn());
+    mint.mockClear();
+    revoke.mockClear();
+    renderPdf.mockClear();
+    const out = await service.printRecordToFile(request(PROJECT_BRIEF_PAGE.name), ctx);
+    expect(renderPdf).toHaveBeenCalledTimes(1);
+    expect(renderPdf).toHaveBeenCalledWith(
+      expect.objectContaining({ url: `${CONSOLE}/apps/showcase/showcase_project/record/${project}/page/${PROJECT_BRIEF_PAGE.name}` }),
+    );
+    expect(revoke).toHaveBeenCalledTimes(1);
+    expect(out).toMatchObject({ size: PDF.byteLength, filename: `${PROJECT_BRIEF_PAGE.name}-${project}.pdf` });
+    const attachment = await ql.findOne('sys_attachment', { where: { id: out.attachmentId } }, { context: SYS });
+    expect(attachment).toMatchObject({ parent_object: 'showcase_project', parent_id: project, file_id: out.fileId, uploaded_by: ctx.userId });
+  });
+
+  it('the working default page, which declares no print, is still refused: VALIDATION_ERROR / 400, nothing minted', async () => {
+    const ctx = await stack.contextFor(await stack.signIn());
+    mint.mockClear();
+    renderPdf.mockClear();
+    expect(await refusalOf(service.printRecordToFile(request('showcase_project_detail'), ctx))).toEqual({
+      code: 'VALIDATION_ERROR',
+      status: 400,
+    });
+    expect(mint).not.toHaveBeenCalled();
+    expect(renderPdf).not.toHaveBeenCalled();
+  });
+
+  it('the brief cannot print a record of another object: VALIDATION_ERROR / 400, nothing minted', async () => {
+    const ctx = await stack.contextFor(await stack.signIn());
+    const [invoice] = await ql.find('showcase_invoice', { limit: 1 }, { context: SYS });
+    mint.mockClear();
+    renderPdf.mockClear();
+    expect(
+      await refusalOf(service.printRecordToFile(request(PROJECT_BRIEF_PAGE.name, 'showcase_invoice', String(invoice!.id)), ctx)),
+    ).toEqual({ code: 'VALIDATION_ERROR', status: 400 });
+    expect(mint).not.toHaveBeenCalled();
+    expect(renderPdf).not.toHaveBeenCalled();
+  });
+});
@@ -18,7 +18,11 @@
 //    `sys_file.owner_id` and `sys_attachment.uploaded_by` the requester;
 //  - the minted session gone after the print — after a success and after a
 //    forced failure (the archive's byte store refusing after the render);
-//  - the minted cookie in no refusal message.
+//  - the minted cookie in no refusal message;
+//  - a project printed on a print page that is NOT its object's default record
+//    page (the brief of `print-named-page.fixture.ts`, saved through the
+//    metadata save door), through the console's named record-page route
+//    (#26583).
 //
 // Needs two things this suite's CI job does not build: the Console bundle
 // (`packages/console/dist`, `pnpm objectui:build`) and a Chromium
@@ -38,6 +42,7 @@ import { StorageServicePlugin } from '@objectstack/service-storage';
 import { AuditPlugin } from '@objectstack/plugin-audit';
 import type { IAuthService, IDataEngine, IStorageService, PrincipalSession } from '@objectstack/spec/contracts';
 import { bootShowcase } from './showcase-boot.js';
+import { PROJECT_BRIEF_PAGE } from './print-named-page.fixture.js';
 import { createConsoleStaticPlugin } from '../../../cli/src/utils/console.js';
 import { PrintServicePlugin } from '../../../services/service-print/src/print-service-plugin.js';
 import type { IPrintService } from '../../../services/service-print/src/print-service.js';
@@ -180,6 +185,8 @@ for (const placement of ['local', 'remote'] as const) {
 
       print = stack.kernel.getService<IPrintService>('print');
       ql = stack.kernel.getService<IDataEngine>('objectql');
+      const protocol = await stack.kernel.getServiceAsync<{ saveMetaItem(r: Record<string, unknown>): Promise<unknown> }>('protocol');
+      await protocol.saveMetaItem({ type: 'page', name: PROJECT_BRIEF_PAGE.name, item: PROJECT_BRIEF_PAGE });
       // Observe each mint (the plugin reads the auth service per call): keep the
       // cookie so the test can ask, afterwards, whether it still opens a session.
       const auth = stack.kernel.getService<IAuthService>('auth');
@@ -243,6 +250,30 @@ for (const placement of ['local', 'remote'] as const) {
       expect(await opensASession(minted[0]!)).toEqual([401, 'UNAUTHENTICATED']);
     }, 120_000);
 
+    it('prints a project on a print page that is not its default record page, through the named record-page route', async () => {
+      const token = await stack.signIn();
+      const ctx = await stack.contextFor(token);
+      const [project] = await ql.find('showcase_project', { limit: 1 }, { context: SYS });
+      const projectId = String(project!.id);
+      sessionUsers.length = 0;
+      minted.length = 0;
+
+      const out = await print.printRecordToFile(
+        { app: APP, object: 'showcase_project', recordId: projectId, page: PROJECT_BRIEF_PAGE.name },
+        ctx,
+      );
+
+      expect(new Set(sessionUsers)).toEqual(new Set([ctx.userId]));
+      const file = await ql.findOne('sys_file', { where: { id: out.fileId } }, { context: SYS });
+      const attachment = await ql.findOne('sys_attachment', { where: { id: out.attachmentId } }, { context: SYS });
+      expect(file).toMatchObject({ status: 'committed', mime_type: 'application/pdf', owner_id: ctx.userId });
+      expect(attachment).toMatchObject({ parent_object: 'showcase_project', parent_id: projectId, uploaded_by: ctx.userId });
+      const bytes = await stack.kernel.getService<IStorageService>('storage').download(String(file!.key));
+      expect(bytes.subarray(0, 5).toString('latin1')).toBe('%PDF-');
+      expect(minted).toHaveLength(1);
+      expect(await opensASession(minted[0]!)).toEqual([401, 'UNAUTHENTICATED']);
+    }, 120_000);
+
     it('a print that fails after the render still revokes the session, stores nothing, and names no credential', async () => {
       const token = await stack.signIn();
       const ctx = await stack.contextFor(token);