@@ -4228,7 +4228,7 @@
       "title": "Write guards tightened on v18: a walled update cannot null out organization_id, a detail write naming an unreadable header is reference_not_found, a validation rule reading an unreadable header answers like a missing one, and a controlled_by_parent child's attachments / comments / explain follow the master's edit grant",
       "since": "v18",
       "status": "active",
-      "revision": 6,
+      "revision": 7,
       "priority": "P1",
       "surface": "api",
       "personas": [
@@ -4286,7 +4286,7 @@
       ],
       "automated": {
         "kind": "dogfood",
-        "ref": "packages/plugins/plugin-security/src/tenant-wall-organization-removal.test.ts + packages/objectql/src/engine-unreadable-master-detail-header.test.ts + packages/objectql/src/engine-predicate-related-master-detail-header.test.ts + packages/qa/dogfood/test/cbp-parent-attachment-comment-gates.dogfood.test.ts + packages/qa/dogfood/test/cbp-explain-master-write.dogfood.test.ts + packages/plugins/plugin-security/src/controlled-by-parent-chain-middle-master.test.ts. Layers (RUNNER rule 6): tenant-wall-organization-removal.test.ts and the two engine master-detail-header tests are in-process — a real engine and SecurityPlugin over SQL drivers, the answer read off the thrown statusCode or through resolveThrownHttpError — so acceptance[1], acceptance[2] and negative[0] (api oracle) score partial from them: no pin here drives those doors over HTTP. The 18.0 sweep's PASS for them at revision 4 (#24840) predates the layer rule; it is not a precedent for scoring them pass from these pins"
+        "ref": "packages/qa/dogfood/test/parent-and-organization-write-guards.dogfood.test.ts + packages/qa/dogfood/test/cbp-parent-attachment-comment-gates.dogfood.test.ts + packages/qa/dogfood/test/cbp-explain-master-write.dogfood.test.ts + packages/plugins/plugin-security/src/tenant-wall-organization-removal.test.ts + packages/objectql/src/engine-unreadable-master-detail-header.test.ts + packages/objectql/src/engine-predicate-related-master-detail-header.test.ts + packages/plugins/plugin-security/src/controlled-by-parent-chain-middle-master.test.ts. Per clause, at the api oracle's layer (in-process HTTP): acceptance[1] — parent-and-organization-write-guards' walled describe boots the showcase with multiTenant 'posture-only' (a real isolated posture: the tenancy service reports the Layer 0 wall active and not degraded, asserted); an organization owner who is not the platform administrator PATCHes their own showcase_private_note with organization_id null and is refused 403 PERMISSION_DENIED, the row keeping its organization (the same caller's PATCH that leaves the column alone is admitted, the control), and inserts sending organization_id null and '' are stamped with the caller's active organization. acceptance[2] and negative[0] — the same file: a member holding a scratch task-writer set whose row policy selects no showcase_project POSTs a showcase_task naming a seeded project it cannot read (asserted) and one naming a project id that exists nowhere; both answer 400 carrying reference_not_found, the two bodies equal field by field once the named id is normalised, and nothing lands (the admin's identical POST lands, the control). On the controlled_by_parent detail (showcase_invoice_line: a stock contributor naming another contributor's invoice, and a missing one) the ADR-0055 §3 master-edit gate answers before the reference check: both are the one 403 PERMISSION_DENIED body, so negative[0] holds there too; that code is the gate's by design (engine-unreadable-master-detail-header.test.ts's controls keep a controlled_by_parent detail unchanged). acceptance[3] — cbp-parent-attachment-comment-gates and cbp-explain-master-write. The plugin-security and objectql files are engine pins beneath (a real engine and SecurityPlugin over SQL drivers). acceptance[0] is the pin run itself"
       },
       "source": [
         "packages/plugins/plugin-security/src/security-plugin.ts#SecurityPlugin",
@@ -4330,6 +4330,12 @@
           "date": "2026-10-26",
           "change": "One checklist-accuracy finding of Tier 1 record #25815 (a1/a2/n0), re-read on main b4199c96: the walled organization-removal refusal and the unreadable-header parity are pinned only in-process (engine + SecurityPlugin over SQL drivers, thrown statusCode / resolveThrownHttpError), with no HTTP pin for the api-oracle legs; #24840 scored them PASS at revision 4 before the layer rule. automated.ref names the layer and the precedent. No clause or status changed",
           "ref": "#25835"
+        },
+        {
+          "revision": 7,
+          "date": "2026-10-27",
+          "change": "Access-security pin upgrade, slice 4 (#26571; Tier 1 record #26468 scored the item PARTIAL). Pinned over the REST data door: acceptance[1] on a posture-only walled showcase boot (the organization-emptying PATCH refused 403 PERMISSION_DENIED, empty-org inserts stamped); acceptance[2] and negative[0] as the unreadable/nonexistent master comparison, field by field, on a plain master_detail detail, and the same parity on the controlled_by_parent line, where the master-edit gate's 403 answers first (new parent-and-organization-write-guards). No clause or status changed",
+          "ref": "#26571"
         }
       ]
     },
@@ -4338,7 +4344,7 @@
       "title": "Seven deployment tables (sys_job, sys_job_run, sys_job_queue, sys_flow_dispatch, sys_migration, sys_migration_journal, sys_presence) carry no organization column on v18 and are readable only with manage_platform_settings — an org admin who is not platform admin is refused even on single",
       "since": "v18",
       "status": "active",
-      "revision": 3,
+      "revision": 4,
       "priority": "P1",
       "surface": "api",
       "personas": [
@@ -4381,8 +4387,8 @@
         "wrong-persona"
       ],
       "automated": {
-        "kind": "unit",
-        "ref": "packages/platform-objects/src/deployment-level-no-tenant-column.test.ts (sys_job, sys_job_queue, sys_job_run, sys_migration, sys_migration_journal) + packages/services/service-automation/src/sys-flow-dispatch.object.test.ts (sys_flow_dispatch) + packages/services/service-realtime/src/objects/sys-presence.object.test.ts (sys_presence) — object-declaration pins (no tenant column, requiredPermissions manage_platform_settings); they score acceptance[0] only. No pin drives either door over HTTP: acceptance[1] (org admin 403, platform admin 200) and acceptance[2] (400 INVALID_FIELD on an organization_id filter) stay live-run clauses"
+        "kind": "dogfood",
+        "ref": "packages/qa/dogfood/test/deployment-tables-platform-only.dogfood.test.ts + packages/platform-objects/src/deployment-level-no-tenant-column.test.ts (sys_job, sys_job_queue, sys_job_run, sys_migration, sys_migration_journal) + packages/services/service-automation/src/sys-flow-dispatch.object.test.ts (sys_flow_dispatch) + packages/services/service-realtime/src/objects/sys-presence.object.test.ts (sys_presence). Per clause, at the api oracle's layer (in-process HTTP): acceptance[1] — deployment-tables-platform-only signs up a member of the Default Organization and promotes its sys_member role to admin (guarded: it resolves an organization_admin permission set, holds no manage_platform_settings and is not the platform administrator), then reads GET /api/v1/data/TABLE for each of the seven tables: the org admin is refused 403 PERMISSION_DENIED on every one, and the platform administrator is served 200. acceptance[2] — the platform administrator's GET with the URL-encoded filter [[\"organization_id\",\"=\",\"x\"]] answers 400 INVALID_FIELD on each of the seven. The three object-declaration pins (no tenant column, requiredPermissions manage_platform_settings) are beneath it. acceptance[0] is the pin run itself"
       },
       "source": [
         "packages/platform-objects/src/audit/sys-job.object.ts",
@@ -4407,6 +4413,12 @@
           "date": "2026-10-26",
           "change": "Two checklist-accuracy findings of Tier 1 record #25815, re-read on main b4199c96. a0: automated.ref named packages/plugins/plugin-security/src/authz-identity-objects-boot-refusal.test.ts, which pins SecurityPlugin's boot refusal when sys_user / sys_member / sys_organization are not registered — nothing about the seven deployment tables or manage_platform_settings — so it left the ref. a1/a2: the ref now says no pin drives either door over HTTP and both clauses stay live-run. No clause or status changed",
           "ref": "#25835"
+        },
+        {
+          "revision": 4,
+          "date": "2026-10-27",
+          "change": "Access-security pin upgrade, slice 4 (#26571; Tier 1 record #26468 scored the item PARTIAL: no pin drove either door over HTTP). Pinned over the REST data door: acceptance[1]'s org admin 403 PERMISSION_DENIED and platform admin 200 on all seven tables, and acceptance[2]'s 400 INVALID_FIELD on an organization_id filter (new deployment-tables-platform-only). automated.kind unit -> dogfood, since the ref now leads with the dogfood pin. No clause or status changed",
+          "ref": "#26571"
         }
       ]
     },
@@ -4415,7 +4427,7 @@
       "title": "Share links with two gates combined: signed_in + password answers an anonymous caller 401 SIGN_IN_REQUIRED whatever password is sent, email + password answers a uniform 404 INVALID_OR_EXPIRED, and /messages opens exactly where /resolve opens",
       "since": "v18",
       "status": "active",
-      "revision": 4,
+      "revision": 5,
       "priority": "P2",
       "surface": "api",
       "personas": [
@@ -4464,8 +4476,8 @@
         "a password-correct anonymous caller reading link A is an authorization FAIL — carve-out applies"
       ],
       "automated": {
-        "kind": "conformance",
-        "ref": "packages/plugins/plugin-sharing/src/share-link-eligibility.test.ts + packages/plugins/plugin-sharing/src/share-link-envelope.conformance.test.ts + packages/runtime/src/domains/share-links-messages-audience.test.ts (acceptance[3]: `/messages` opens for a caller exactly when `/resolve` opens the same link, on both mounts) + packages/runtime/src/domains/share-links-refusal-order.test.ts (acceptance[1] and acceptance[2]: the anonymous no-password-oracle row and the email-audience identical-refusal rows). Layers (RUNNER rule 6): the two runtime files are in-process — the domain's route entries kept by a minimal IHttpServer stand-in over a real engine, no Hono and no HTTP — so they score acceptance[0] only; acceptance[1] to acceptance[3] (api oracle) score partial from them, and their live legs are driven over HTTP"
+        "kind": "dogfood",
+        "ref": "packages/qa/dogfood/test/share-link-combined-gates.dogfood.test.ts + packages/plugins/plugin-sharing/src/share-link-eligibility.test.ts + packages/plugins/plugin-sharing/src/share-link-envelope.conformance.test.ts + packages/runtime/src/domains/share-links-messages-audience.test.ts + packages/runtime/src/domains/share-links-refusal-order.test.ts. Per clause, at the api oracle's layer (in-process HTTP): the dogfood file mints two links through POST /api/v1/share-links on the seeded published client brief and drives the public token routes anonymously. acceptance[1] and negative[0] — link A (audience signed_in + password) resolved with no password, a wrong one and the right one in the UTF-8 header form answers 401 SIGN_IN_REQUIRED, the three bodies byte-identical. acceptance[2] — link B (audience email + password): no email and no password, the right password with no email, an off-list email with the right password, and the allowlisted email with a wrong password and with none all answer 404 INVALID_OR_EXPIRED, byte-identical with an unknown token's body; the allowlisted email with the right password resolves 200 (the control). acceptance[3] — the same eight calls paired with /messages: 404 NOT_FOUND on every call /resolve refused, and 400 UNSUPPORTED (a brief is no ai_conversations record) on the one call /resolve passed. The plugin-sharing and runtime files are beneath (the route entries over a real engine, no HTTP). acceptance[0] is the pin run itself"
       },
       "source": [
         "packages/plugins/plugin-sharing/src/share-link-routes.ts#registerShareLinkRoutes",
@@ -4496,6 +4508,12 @@
           "date": "2026-10-26",
           "change": "Two checklist-accuracy findings of Tier 1 record #25815, re-read on main b4199c96. a1/a2: packages/runtime/src/domains/share-links-refusal-order.test.ts asserts the anonymous no-password-oracle and email-audience identical-refusal rows but was not in the ref; it joins it. a3: share-links-messages-audience.test.ts drives in-process route entries (no Hono, no HTTP), so it scores acceptance[0], not the api oracle of acceptance[3]. automated.ref names the layer of both. No clause or status changed",
           "ref": "#25835"
+        },
+        {
+          "revision": 5,
+          "date": "2026-10-27",
+          "change": "Access-security pin upgrade, slice 4 (#26571; Tier 1 record #26468 scored the item PARTIAL: the runtime pins drive the route entries with no HTTP). Pinned over HTTP on anonymous calls: acceptance[1] and negative[0]'s byte-identical 401 SIGN_IN_REQUIRED across the password variants, acceptance[2]'s byte-identical 404 INVALID_OR_EXPIRED across the non-entitled variants and the unknown token with the allowlisted 200 control, and acceptance[3]'s resolve/messages pairing (new share-link-combined-gates). automated.kind conformance -> dogfood, since the ref now leads with the dogfood pin. No clause or status changed",
+          "ref": "#26571"
         }
       ]
     },
 
@@ -0,0 +1,84 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+//
+// [#26571] `access-security.deployment-tables-platform-only`, acceptance[1]
+// and acceptance[2], over the REST data door on the stock showcase.
+//
+// Seven tables are deployment-level: they carry no tenant column and declare
+// `requiredPermissions: ['manage_platform_settings']` (the object-declaration
+// pins in platform-objects, service-automation and service-realtime). The item
+// scores the doors at the `api` oracle, so this file reads them as the two
+// personas the item names:
+//
+//   - an organization administrator (the Default Organization's membership
+//     role promoted to `admin`, which provisions the organization-admin set)
+//     who is not the platform administrator: 403 PERMISSION_DENIED on every
+//     table;
+//   - the platform administrator: 200 on every table;
+//   - acceptance[2]: an `organization_id` filter is 400 INVALID_FIELD, since
+//     the column does not exist on these tables.
+//
+// Isolated boot: the file promotes a membership.
+
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import { type VerifyStack } from '@objectstack/verify';
+import { bootShowcase } from './showcase-boot.js';
+
+const SYS = { context: { isSystem: true } } as const;
+const ORG_ADMIN = 'deployment-tables-org-admin@verify.test';
+const PASSWORD = 'Deploy-Tables-26571';
+const TABLES = [
+  'sys_job', 'sys_job_queue', 'sys_job_run', 'sys_migration', 'sys_migration_journal', 'sys_flow_dispatch', 'sys_presence',
+] as const;
+
+const codeOf = (body: any) =>
+  (body?.error && typeof body.error === 'object' ? body.error.code : undefined) ?? body?.code ?? null;
+
+describe('deployment-level tables are the platform administrator\'s alone', () => {
+  let stack: VerifyStack;
+  let admin: string;
+  let orgAdmin: string;
+
+  beforeAll(async () => {
+    stack = await bootShowcase();
+    admin = await stack.signIn();
+    const ql: any = await stack.kernel.getServiceAsync('objectql');
+    orgAdmin = await stack.signUp(ORG_ADMIN, PASSWORD);
+    const userId = (await ql.findOne('sys_user', { where: { email: ORG_ADMIN }, ...SYS }))?.id;
+    expect(userId, 'the org admin is provisioned').toBeTruthy();
+    // Promote the way an organization does: the membership role.
+    const [membership] = await ql.find('sys_member', { where: { user_id: userId }, ...SYS });
+    expect(membership?.organization_id, 'a member of the Default Organization').toBeTruthy();
+    await ql.update('sys_member', { id: membership.id, role: 'admin' }, SYS);
+    // A fresh session reads the promoted role.
+    orgAdmin = await stack.signIn(ORG_ADMIN, PASSWORD);
+  }, 120_000);
+
+  afterAll(async () => {
+    await stack?.stop();
+  });
+
+  it('guard the guard: the org admin holds the organization-admin standing and is not the platform administrator', async () => {
+    const session = (await (await stack.apiAs(orgAdmin, 'GET', '/auth/get-session')).json()) as any;
+    expect(session.user?.isPlatformAdmin, 'not the platform administrator').not.toBe(true);
+    expect(session.user?.positions ?? []).not.toContain('platform_admin');
+    const p = (await (await stack.apiAs(orgAdmin, 'GET', '/auth/me/permissions')).json()) as any;
+    const resolved = p?.data ?? p;
+    expect((resolved.permissionSets ?? []).map(String).join(','), 'the organization-admin set is held').toMatch(/organization_admin/);
+    expect(resolved.systemPermissions ?? [], 'no platform-settings capability').not.toContain('manage_platform_settings');
+  });
+
+  it.each(TABLES)('acceptance[1]: %s — the org admin is refused 403 PERMISSION_DENIED; the platform admin reads 200', async (table) => {
+    const refused = await stack.apiAs(orgAdmin, 'GET', `/data/${table}`);
+    const body = await refused.json();
+    expect([refused.status, codeOf(body)], JSON.stringify(body)).toEqual([403, 'PERMISSION_DENIED']);
+    const served = await stack.apiAs(admin, 'GET', `/data/${table}`);
+    expect(served.status, await served.clone().text()).toBe(200);
+  });
+
+  it.each(TABLES)('acceptance[2]: %s — an organization_id filter is 400 INVALID_FIELD (the column does not exist)', async (table) => {
+    const filter = encodeURIComponent(JSON.stringify([['organization_id', '=', 'x']]));
+    const res = await stack.apiAs(admin, 'GET', `/data/${table}?filter=${filter}`);
+    const body = await res.json();
+    expect([res.status, codeOf(body)], JSON.stringify(body)).toEqual([400, 'INVALID_FIELD']);
+  });
+});