@@ -0,0 +1,28 @@
+---
+'@objectstack/platform-objects': minor
+'@objectstack/service-settings': minor
+'@objectstack/spec': minor
+'@objectstack/cli': minor
+---
+
+feat(service-settings,platform-objects)!: the settings cascade's global rung moves to the tenant-less `sys_platform_setting`, and `sys_setting.scope` no longer declares `global` (ADR-0131 D7)
+
+Clause-②: yes (narrowing)
+
+<!-- adr-0087: registered sys-setting-global-rung-moved -->
+
+**BREAKING**, shipped as `minor` under the repo's launch-window convention for breaking changes (Changesets pre mode is not on yet).
+
+A settings value for a key declared at `global` scope is a deployment-wide value: the mail transport, the SMS, storage, AI and knowledge providers, auth policy, the lifecycle retention defaults. It used to be a `scope: 'global'` row of `sys_setting`, a tenant-scoped table, where the injected `organization_id` column only ever held NULL and a walled posture hid the row from every reader. ADR-0131 D7 moves the rung out: it is now stored in a new platform object, `sys_platform_setting`.
+
+- **`sys_platform_setting`** (registered by the settings service, beside `sys_setting`): one row per `(namespace, key)` for the deployment, with the `value`, `value_enc`, `encrypted`, `locked`, `locked_reason` and `updated_by` columns of a settings row, and no `scope`, `user_id` or `organization_id` (`systemFields: { tenant: false }`). It is governed by object permission: a generic data read needs `manage_platform_settings` (`requiredPermissions`), which platform administrators hold. Writes go only through the settings door.
+- **`SettingsService`** writes a global-scope key to `sys_platform_setting` and reads the cascade's global rung from there alone. Its `sys_setting` reads exclude `scope = 'global'`, so there is one source per rung. The cascade order, the lock semantics, `SpecifierScope` and the `source: 'global'` resolution value are unchanged. A global-scope change's `config_change` audit row names `sys_platform_setting` (`CONFIG_CHANGE_GLOBAL_OBJECT_NAME`); tenant- and user-scope changes still name `sys_setting`.
+- **`sys_setting.scope`** no longer declares the `global` option: no write produces such a row. `sys_setting_audit.scope` keeps it, because a global-scope change is still audited there.
+- **`os secret orphans` / `os secret rewrap`**: the settings family of the `sys_secret` reference union now reads both `sys_setting.value_enc` and `sys_platform_setting.value_enc`. Without that, every credential held at the global rung would read as unreferenced and be swept. An unreadable `sys_platform_setting` gaps the family, which refuses deletion.
+
+**What moves for consumers.**
+
+- **Existing databases — nothing moves automatically** (ADR-0131 D14). A `sys_setting` row at `scope = 'global'` is no longer read; until the v18 upgrade ceremony moves it, that key answers from its next rung or the manifest default. The ceremony moves each such row to `sys_platform_setting` by namespace and key, its `value_enc` handle included. An encrypted value needs no re-encryption: the ciphertext's associated data binds the settings scope, namespace and key, never the holding object or an organization.
+- **Authored references.** A filter, list-view column or seed that names `scope = 'global'` on `sys_setting` matches nothing: point it at `sys_platform_setting`, which has no `scope` column.
+- **Generic data reads of the global values.** Read `sys_platform_setting`; it needs `manage_platform_settings`. The settings door (`/api/settings/:namespace`) is unchanged and keeps applying each manifest's own read and write capability.
+- **Kernels that register the settings objects by hand.** Register `SysPlatformSetting` (`@objectstack/platform-objects/system`) beside `SysSetting`; `SettingsServicePlugin` already does. The service reads both on every resolution, so a kernel missing one fails the read loudly rather than answering a cascade with a rung missing.
@@ -122,7 +122,7 @@ are reported as `undecidable` rather than assumed either way.
 
 The same holds twice over for the context. An options argument spelled as a
 literal can be read; one spelled `options`, `{ ...opts }`, or handed through a
-forwarding shim cannot, and **54 of the 234 sites are spelled that way**. A
+forwarding shim cannot, and **52 of the 234 sites are spelled that way**. A
 context resolved from an inline literal or a local `const` can be tested for
 `isSystem`; one arriving from a helper call cannot.
 
@@ -150,8 +150,8 @@ now **0**: nothing on this surface threads a context that provably lacks the fla
 
 **"No tenant context" counted sites it had not read.** An options argument the
 walker could not parse was folded into the same bucket as one it had read and
-found empty. That published **62 sites "carrying no tenant context at all"**
-when 8 said so and 54 were simply unread — an over-claim in the *alarming*
+found empty. That published **60 sites "carrying no tenant context at all"**
+when 8 said so and 52 were simply unread — an over-claim in the *alarming*
 direction, on the very figure this page tells other cards to cite. `carries` is
 now three-valued, and an unreadable argument can never contribute to the
 provable count.
@@ -228,10 +228,10 @@ cannot read, and they are neither in nor out.
 | …whose object name is chosen at run time | 80 |
 | …against an object with tenancy ENABLED | 153 |
 | …against an object that declares tenancy off | 1 |
-| threading a tenant context | 172 |
+| threading a tenant context | 174 |
 | PROVABLY carrying none (options read, no context key) | **8** |
 | …of those, against a decidably tenancy-enabled object | **2** |
-| options argument UNREADABLE — may or may not carry one | 54 |
+| options argument UNREADABLE — may or may not carry one | 52 |
 | …of those, against a decidably tenancy-enabled object | 31 |
 | threading a decidably ELEVATED (`isSystem`) context | 123 |
 | threading a context that is decidably NOT elevated | 0 |
@@ -297,13 +297,13 @@ holds still. They are required to be HERE and to say WHEN they were true;
 their values are not compared. The reasoning, and the measurement behind it,
 are in `scripts/check-tenant-audit-census.mjs`.
 
-Measured on 2026-10-08 at `7f9500afd`.
+Measured on 2026-10-08 at `0328884e5`.
 
 | corpus scale (not enforced) | count |
 | :--- | ---: |
-| tracked non-test sources scanned | 615 |
+| tracked non-test sources scanned | 617 |
 | engine-shaped types recognised | 70 |
-| declared objects in the registry | 116 |
+| declared objects in the registry | 117 |
 | same-named calls subtracted as non-engine | 160 |
 
 {/* END GENERATED: tenant-audit-census */}
@@ -38,10 +38,10 @@ silent, and `node scripts/tenant-audit-census.mjs --write` is the resolution.
 | Object name chosen at run time | 80 |
 | Against a tenancy-enabled object | 153 |
 | Against an object declaring tenancy off | 1 |
-| Threading a tenant context | 172 |
+| Threading a tenant context | 174 |
 | Provably carrying none | 8 |
 | …and decidably tenancy-enabled | 2 |
-| Options argument unreadable | 54 |
+| Options argument unreadable | 52 |
 | …and decidably tenancy-enabled | 31 |
 | Threading a decidably elevated context | 123 |
 | Threading a decidably non-elevated context | 0 |
@@ -90,13 +90,13 @@ holds still. They are required to be HERE and to say WHEN they were true;
 their values are not compared. The reasoning, and the measurement behind it,
 are in `scripts/check-tenant-audit-census.mjs`.
 
-Measured on 2026-10-08 at `7f9500afd`.
+Measured on 2026-10-08 at `0328884e5`.
 
 | corpus scale (not enforced) | count |
 | :--- | ---: |
-| tracked non-test sources scanned | 615 |
+| tracked non-test sources scanned | 617 |
 | engine-shaped types recognised | 70 |
-| declared objects in the registry | 116 |
+| declared objects in the registry | 117 |
 | same-named calls subtracted as non-engine | 160 |
 
 ## Every site
@@ -239,8 +239,8 @@ Measured on 2026-10-08 at `7f9500afd`.
 | `packages/services/service-settings/src/settings-service-plugin.ts` | `insert` | `sys_secret` | enabled | elevated | 1 |
 | `packages/services/service-settings/src/settings-service-plugin.ts` | `update` | `sys_secret` | enabled | elevated | 1 |
 | `packages/services/service-settings/src/settings-service-plugin.ts` | `insert` | `sys_setting_audit` | enabled | elevated | 1 |
-| `packages/services/service-settings/src/settings-service.ts` | `insert` | `this.objectName` | undecidable | options unreadable | 1 |
-| `packages/services/service-settings/src/settings-service.ts` | `update` | `this.objectName` | undecidable | options unreadable | 1 |
+| `packages/services/service-settings/src/settings-service.ts` | `insert` | `object` | undecidable | context, elevation undecidable | 1 |
+| `packages/services/service-settings/src/settings-service.ts` | `update` | `object` | undecidable | context, elevation undecidable | 1 |
 | `packages/services/service-storage/src/attachment-lifecycle.ts` | `update` | `sys_file` | enabled | elevated | 3 |
 | `packages/services/service-storage/src/backfill-file-references.ts` | `update` | `object` | undecidable | options unreadable | 1 |
 | `packages/services/service-storage/src/backfill-file-references.ts` | `update` | `object` | undecidable | elevated | 1 |
 
@@ -108,6 +108,10 @@ function wireBoot(
       if (object === 'sys_setting') {
         return { async find() { harness.reads.push('sys_setting'); return rows.settings.map((r) => ({ ...r })); } };
       }
+      // [ADR-0131 D7] The settings family's second holder: the global rung's store.
+      if (object === 'sys_platform_setting') {
+        return { async find() { harness.reads.push('sys_platform_setting'); return []; } };
+      }
       if (object === 'sys_metadata') return { async find() { harness.reads.push('sys_metadata'); return []; } };
       return undefined;
     },
@@ -247,7 +251,7 @@ describe('os secret rewrap — guards that stop a run before any row is opened o
   }, 60_000);
 
   it('a dry run over tables the boot measured absent reads none of them, and reports empty work', async () => {
-    const h = wireBoot(freshRows(), { absent: ['sys_secret', 'sys_setting', 'sys_metadata'] });
+    const h = wireBoot(freshRows(), { absent: ['sys_secret', 'sys_setting', 'sys_platform_setting', 'sys_metadata'] });
     const { payload, exitCode } = await run(['--no-declared-datasources']);
 
     // "Not asked": a table that does not exist holds nothing, so no read is issued.
 
@@ -161,6 +161,15 @@ const sysSettingObject = {
   ),
 };
 
+/** [ADR-0131 D7] The global rung's store: no `scope`, no `user_id`. */
+const sysPlatformSettingObject = {
+  name: 'sys_platform_setting',
+  label: 'Platform Setting',
+  fields: Object.fromEntries(
+    ['id', 'namespace', 'key', 'value', 'value_enc'].map((f) => [f, textField(f)]),
+  ),
+};
+
 const sysMetadataObject = {
   name: 'sys_metadata',
   label: 'Metadata',
@@ -205,7 +214,7 @@ async function buildRuntime() {
   // `packageId` is required by the built declaration this package resolves
   // (`registerObject(schema, packageId, …)`); the engine's own in-package tests
   // reach a source signature that defaults it.
-  for (const object of [sysSecretObject, sysSettingObject, sysMetadataObject, smtpObject]) {
+  for (const object of [sysSecretObject, sysSettingObject, sysPlatformSettingObject, sysMetadataObject, smtpObject]) {
     engine.registry.registerObject(object as never, TEST_PACKAGE_ID);
   }
 
@@ -329,7 +338,7 @@ describe('the premise: the shipped settings-scoped classifier calls a LIVE crede
   });
 });
 
-describe('family 1 — settings (`sys_setting.value_enc`)', () => {
+describe('family 1 — settings (`sys_setting.value_enc` and `sys_platform_setting.value_enc`)', () => {
   let rt: Runtime;
   beforeEach(async () => { rt = await buildRuntime(); });
 
@@ -363,6 +372,41 @@ describe('family 1 — settings (`sys_setting.value_enc`)', () => {
     expect(union.complete).toBe(false);
     expect(union.gaps.map((g) => g.family)).toContain('settings');
   });
+
+  // [ADR-0131 D7] The global rung moved to `sys_platform_setting`, and the
+  // deployment-wide values it holds are exactly the provider credentials (mail,
+  // SMS, storage, AI). A union over `sys_setting` alone reads their handles as
+  // unreferenced, and the sweep deletes the credential in force.
+  it('names a handle held ONLY by sys_platform_setting.value_enc — the global rung', async () => {
+    const handle = await rt.crypto.encrypt('relay-api-key', { scope: 'settings', namespace: 'smtp', key: 'password' });
+    rt.store.seed('sys_secret', {
+      id: handle.id, namespace: 'smtp', key: 'password', kms_key_id: handle.kmsKeyId,
+      alg: handle.alg, version: handle.version, ciphertext: handle.ciphertext,
+    });
+    rt.store.seed('sys_platform_setting', { id: 'ps_1', namespace: 'smtp', key: 'password', value_enc: handle.id });
+    // Anti-vacuity: no `sys_setting` row names it, so only the new holder can.
+    expect(rt.store.rowsOf('sys_setting').some((r) => r.value_enc === handle.id)).toBe(false);
+
+    const union = await collect(rt);
+    assertSecretReferenceUnionComplete(union);
+    expect(union.handleIds.has(handle.id)).toBe(true);
+    const refs = union.references.filter((r) => r.handleId === handle.id);
+    expect(refs).toHaveLength(1);
+    expect(refs[0].family).toBe('settings');
+    expect(refs[0].holder).toBe('sys_platform_setting(namespace=smtp,key=password)');
+  });
+
+  it('an unreadable sys_platform_setting gaps the WHOLE settings family', async () => {
+    rt.store.failReadsOf('sys_platform_setting', new Error('relation does not exist'));
+    const result = await collectSettingsSecretReferences(rt.engine);
+    expect(result.status).toBe('gap');
+    expect(result.status === 'gap' && result.reason).toContain('sys_platform_setting');
+    expect(result.status === 'gap' && result.reason).toContain('relation does not exist');
+
+    const union = await collect(rt);
+    expect(union.complete).toBe(false);
+    expect(union.gaps.map((g) => g.family)).toContain('settings');
+  });
 });
 
 describe('family 2 — the engine secret-field channel (`secret:<id>` on a business row)', () => {
 
@@ -8,7 +8,8 @@
  * `id` field's own description):
  *
  *  1. **settings** — `SettingsService` stores a bare `sec_…` handle in
- *     `sys_setting.value_enc`;
+ *     `sys_setting.value_enc`, or `sys_platform_setting.value_enc` for a
+ *     global-scope key (ADR-0131 D7);
  *  2. **object-field** — the engine's `secret`-typed field channel stores
  *     `secret:<id>` on an arbitrary business row, on every `secret` field of
  *     every REGISTERED object, tenant-authored ones included;
@@ -333,55 +334,79 @@ const describeCause = (err: unknown): string =>
   err instanceof Error ? `${err.name}: ${err.message}` : String(err);
 
 /**
- * Family 1 — handles held in `sys_setting.value_enc`.
+ * The settings producer's holder objects: every store `SettingsService` keeps a
+ * `value_enc` in. `sys_setting` holds the tenant and user rungs, and
+ * `sys_platform_setting` the global rung (ADR-0131 D7) — the deployment-wide
+ * values, which are exactly the ones that carry provider credentials (mail,
+ * SMS, storage, AI, knowledge).
+ *
+ * ⛔ Both are read, always. A union over `sys_setting` alone reads every handle
+ * a global-scope secret holds as unreferenced, and the sweep then deletes the
+ * credential in force — with no record afterwards of which one it was.
+ */
+const SETTINGS_HOLDER_OBJECTS = ['sys_setting', 'sys_platform_setting'] as const;
+
+/**
+ * Family 1 — handles held in the settings stores' `value_enc`
+ * ({@link SETTINGS_HOLDER_OBJECTS}).
  *
  * `value_enc` also carries LEGACY INLINE ciphertext on rows written before the
  * Phase-3 split, and such a row references no `sys_secret` row at all. The
  * discriminator is service-settings' own `isSecretHandle`, imported rather than
  * restated: treating inline ciphertext as a handle would inject a phantom id
  * into the union, and restating the `sec_` prefix is how the two spellings
  * would drift apart later.
+ *
+ * Either holder that cannot be read gaps the WHOLE family: a holder missing
+ * from the union is a set of live handles the sweep would read as orphans.
  */
 export async function collectSettingsSecretReferences(
   engine: SecretReferenceEngineLike,
 ): Promise<FamilyResult> {
   const family: SecretReferenceFamily = 'settings';
   const references: SecretReference[] = [];
 
-  const driver = engine.getDriverForObject('sys_setting');
-  if (!driver) {
-    return {
-      family,
-      status: 'gap',
-      reason:
-        'no driver resolves for `sys_setting`, so the settings producer\'s holder column could '
-        + 'not be read (is the settings subsystem registered on this runtime?)',
-      references,
-    };
-  }
+  for (const holder of SETTINGS_HOLDER_OBJECTS) {
+    const driver = engine.getDriverForObject(holder);
+    if (!driver) {
+      return {
+        family,
+        status: 'gap',
+        reason:
+          `no driver resolves for \`${holder}\`, so the settings producer's holder column could `
+          + 'not be read (is the settings subsystem registered on this runtime?)',
+        references,
+      };
+    }
 
-  let result: unknown;
-  try {
-    result = await driver.find('sys_setting', { fields: ['namespace', 'key', 'scope', 'user_id', 'value_enc'] });
-  } catch (err) {
-    return {
-      family,
-      status: 'gap',
-      reason: `reading \`sys_setting\` threw — ${describeCause(err)}`,
-      references,
-    };
-  }
+    // `sys_platform_setting` has no `scope` and no `user_id`: one row per
+    // `(namespace, key)` for the deployment.
+    const fields = holder === 'sys_setting'
+      ? ['namespace', 'key', 'scope', 'user_id', 'value_enc']
+      : ['namespace', 'key', 'value_enc'];
+    let result: unknown;
+    try {
+      result = await driver.find(holder, { fields });
+    } catch (err) {
+      return {
+        family,
+        status: 'gap',
+        reason: `reading \`${holder}\` threw — ${describeCause(err)}`,
+        references,
+      };
+    }
 
-  for (const row of rowsOf(result)) {
-    const value = row.value_enc;
-    if (!isSecretHandle(value)) continue; // unset, or legacy inline ciphertext
-    references.push({
-      handleId: value,
-      family,
-      holder: `sys_setting(namespace=${String(row.namespace)},key=${String(row.key)}`
-        + `${row.scope == null ? '' : `,scope=${String(row.scope)}`}`
-        + `${row.user_id == null ? '' : `,user_id=${String(row.user_id)}`})`,
-    });
+    for (const row of rowsOf(result)) {
+      const value = row.value_enc;
+      if (!isSecretHandle(value)) continue; // unset, or legacy inline ciphertext
+      references.push({
+        handleId: value,
+        family,
+        holder: `${holder}(namespace=${String(row.namespace)},key=${String(row.key)}`
+          + `${row.scope == null ? '' : `,scope=${String(row.scope)}`}`
+          + `${row.user_id == null ? '' : `,user_id=${String(row.user_id)}`})`,
+      });
+    }
   }
 
   return { family, status: 'enumerated', references };