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@@ -0,0 +1,17 @@
+---
+'@object-ui/plugin-dashboard': minor
+'@object-ui/i18n': minor
+'@object-ui/sdui-parser': minor
+---
+
+The metric sub-caption is retired on the reader side (objectui#11389, ruling C, the objectui half after `@objectstack/spec` 17.7.0). **BREAKING** for any dashboard that drew a caption under a metric's value.
+
+A metric tile used to draw a sub-caption under its value from the widget's `options.description`, translated by a client bundle entry at `dashboards.NAME.widgets.ID.subCaption`. The spec never declared that options key, and its only writer was the server's `translateDashboard` overlay. `@objectstack/spec` 17.7.0 removed the overlay and refuses a `subCaption` translation entry by name. objectui now stops reading both:
+
+- **`@object-ui/plugin-dashboard`.** No metric tile draws a sub-caption, on either dashboard surface (`DashboardRenderer`, `DashboardGridLayout`), whether the tile is dataset-bound or a stored inline metric. An authored `options.description` (a string or a per-locale map) draws nothing, and neither does a bundle `subCaption` entry. A widget's one authored description, `widget.description`, still draws as the card-header subtitle on `DashboardRenderer`, translated through the widget's `description` bundle key. Nothing on the package entry is removed: the sub-caption resolver module and `DatasetWidget`'s `subCaption` prop were internal.
+- **`@object-ui/i18n`.** `useObjectLabel()` no longer returns `widgetSubCaption`. This removes a member of a published hook's return value: a caller that destructured it no longer compiles, and has nothing to call instead, because the key it read is refused by the spec.
+- **`@object-ui/sdui-parser`.** `CONSUMED_WIDGET_OPTION_KEYS` drops `'description'` and is now exactly the five keys the spec declares (`dateGranularity`, `limit`, `sortBy`, `sortOrder`, `stageOrder`). So `validateTree` reports an authored `options.description` on a dataset-bound dashboard widget as an `unconsumed-widget-option` **warning**, where it used to report nothing. It is a warning, not an error, and the widget's `suppressWarnings` escape hatch still applies.
+
+**Clause-②: no (narrowing).** One export member is removed (`useObjectLabel().widgetSubCaption`) and one exported constant loses a member (`CONSUMED_WIDGET_OPTION_KEYS`). Nothing is added and no accepted input widens.
+
+If a caption under a metric's value is wanted again, it returns as a declared widget-level key outside `options`, not as `options.description` (ruling C).
@@ -78,7 +78,10 @@ into it as `runtimeFilter`.
 > `gauge`, `solid-gauge`, `kpi`, `bullet`, or a widget with no `type`) whose
 > `options.data` is a `{ "provider": "object", … }` query shows the
 > retired-format prompt below instead of its number (objectui#11525), as a
-> `pivot` widget with that query already did.
+> `pivot` widget with that query already did. And one key no longer draws on
+> any widget: `options.description`, the metric sub-caption, is retired at both
+> ends (objectui#11389), so a stored one draws nothing. A widget's one authored
+> description is `widget.description`, the card-header subtitle.
 
 > **Retired: the top-level inline analytics shape.** `object` +
 > `categoryField` / `valueField` / `aggregate` on the widget itself (and the
 
@@ -367,7 +367,14 @@ required), the renderers read exactly:
 | `sortBy` / `sortOrder` | orders by a projected dimension or measure |
 | `limit` | caps the row count |
 | `stageOrder` | explicit stage order for `funnel` / `pyramid` |
-| `description` | metric-card sub-caption; the `widgets.{id}.subCaption` translation channel writes this key |
+
+These are the five keys the spec declares, and nothing else is read.
+`options.description` is not among them: it was the metric-card sub-caption,
+retired at both ends (objectui#11389). `@objectstack/spec` no longer writes
+it from a translation, and objectui no longer draws it. A widget has one
+authored description, `widget.description`, drawn as the card-header subtitle.
+If a caption under a metric's value returns, it returns as a declared
+widget-level key, not as an `options` key.
 
 Every other `options` key on a dataset-bound widget **reaches no renderer**.
 The authoring validator (`validateTree` in `@object-ui/sdui-parser`) reports
@@ -518,8 +525,10 @@ which lists the records for either form and draws no report.
 ## Translations — a served dashboard is translated once
 
 Widget texts have a client translation channel: bundle keys under
-`dashboards.<name>.widgets.<id>` (`title`, `description`, `subCaption`), plus
-`dashboards.<name>.label` and `.description`. A document read from
+`dashboards.<name>.widgets.<id>` (`title`, `description`), plus
+`dashboards.<name>.label` and `.description`. There is no `subCaption` key:
+the translation schema in `@objectstack/spec` refuses it by name in a bundle,
+and the renderer reads no such key (objectui#11389). A document read from
 ObjectStack's `/meta` route does not need it. The server has already applied
 those keys for the request's locale, and it keeps a published edit over them:
 an explicit override beats the packaged default.
 
@@ -26,6 +26,11 @@
  *
  * Directions, written before the run: the edited cells RED before the change
  * (the bundle answered), GREEN after; the unedited cells GREEN on both sides.
+ *
+ * The widget's retired sub-caption (objectui#11389, ruling C) stays in the
+ * fixtures — an `options.description` on the served widget and the bundle's
+ * `subCaption` entries — and every case pins that none of it draws on the
+ * console page.
  */
 
 import * as React from 'react';
@@ -63,6 +68,7 @@ const BUNDLE = {
         system_overview: {
           label: 'System Overview',
           description: 'Platform health at a glance',
+          // `subCaption` is refused by the installed spec; kept to pin that it draws nothing.
           widgets: { widget_total_users: { title: 'Total Users', description: 'Active accounts', subCaption: 'Across all organizations' } },
         },
       },
@@ -86,15 +92,17 @@ interface Texts {
   description: string;
   title: string;
   widgetDescription: string;
-  subCaption: string;
 }
 
+/** The retired sub-caption, authored and bundled: none of it may draw. */
+const RETIRED_SUB_CAPTION = 'All orgs (edited-11295)';
+const RETIRED_TEXTS = [RETIRED_SUB_CAPTION, 'Across all organizations', '覆盖所有组织'];
+
 const EDITED: Texts = {
   label: 'Operations board (edited-11295)',
   description: 'What the ops team watches (edited-11295)',
   title: 'Total Users (edited-11295)',
   widgetDescription: 'Accounts (edited-11295)',
-  subCaption: 'All orgs (edited-11295)',
 };
 
 const SERVED_UNEDITED: Record<'en' | 'zh-CN', Texts> = {
@@ -103,14 +111,12 @@ const SERVED_UNEDITED: Record<'en' | 'zh-CN', Texts> = {
     description: 'Platform health at a glance',
     title: 'Total Users',
     widgetDescription: 'Active accounts',
-    subCaption: 'Across all organizations',
   },
   'zh-CN': {
     label: '系统概览',
     description: '平台健康一览',
     title: '用户总数',
     widgetDescription: '活跃账户',
-    subCaption: '覆盖所有组织',
   },
 };
 
@@ -126,7 +132,7 @@ function served(texts: Texts) {
         type: 'kpi',
         title: texts.title,
         description: texts.widgetDescription,
-        options: { value: 42, description: texts.subCaption },
+        options: { value: 42, description: RETIRED_SUB_CAPTION },
       },
     ],
   };
@@ -167,6 +173,7 @@ describe('DashboardView — a served dashboard is drawn as served (objectui#1129
     expect(h1.textContent).toBe(EDITED.label);
     for (const text of Object.values(EDITED)) expect(screen.getAllByText(text).length).toBeGreaterThan(0);
     for (const text of Object.values(SERVED_UNEDITED[language])) expect(screen.queryByText(text)).toBeNull();
+    for (const text of RETIRED_TEXTS) expect(screen.queryByText(text)).toBeNull();
   });
 
   it.each(['en', 'zh-CN'] as const)('%s: an unedited dashboard shows the translation the server put in', async (language) => {
@@ -175,5 +182,6 @@ describe('DashboardView — a served dashboard is drawn as served (objectui#1129
 
     expect(h1.textContent).toBe(texts.label);
     for (const text of Object.values(texts)) expect(screen.getAllByText(text).length).toBeGreaterThan(0);
+    for (const text of RETIRED_TEXTS) expect(screen.queryByText(text)).toBeNull();
   });
 });
@@ -170,11 +170,14 @@ describe('useObjectLabel identity (objectui#5564)', () => {
     // by objectui#7219 (ruled 2026-09-02), taking the count from 27 to 26.
     // objectui#11344 added `actionOutcome` (an action's per-outcome success
     // copy), taking it back to 27. objectui#11696 added `objectPluralLabel`
-    // (the name of an object's list), taking it to 28. A new resolver must land
+    // (the name of an object's list), taking it to 28. objectui#11389 retired
+    // `widgetSubCaption` with the metric sub-caption (ruling C), taking it to
+    // 27. A new resolver must land
     // on both paths at once, because there is only one path — and a retired one
     // leaves both at once for the same reason, which is what the equality above
     // measures and this count anchors to an absolute.
-    expect(Object.keys(unbound.seen[0])).toHaveLength(28);
+    expect(Object.keys(unbound.seen[0])).toHaveLength(27);
+    expect(Object.keys(unbound.seen[0])).not.toContain('widgetSubCaption');
     expect(typeof unbound.seen[0].objectLabel).toBe('function');
     expect(unbound.seen[0].objectLabel({ name: 'lead', label: 'Lead' })).toBe('Lead');
   });
 
@@ -463,41 +463,18 @@ export function useObjectLabel() {
      * Resolve translated widget description within a dashboard.
      * Convention: `{ns}.dashboards.{dashboardName}.widgets.{widgetId}.description`.
      * Returns undefined when neither metadata nor translation provides one.
+     *
+     * This is a widget's ONE translated description. The sibling sub-caption
+     * key, `widgets.{widgetId}.subCaption`, is retired with its resolver
+     * (objectui#11389, ruling C): `@objectstack/spec` 17.7.0 refuses it by
+     * name in a translation bundle, and nothing here reads it.
      */
     widgetDescription: (dashboardName: string, widgetId: string, fallback?: string) => {
       const fb = fallback ?? '';
       const resolved = resolve(dashboardSuffixes(dashboardName, `widgets.${widgetId}.description`), fb);
       return resolved || undefined;
     },
 
-    /**
-     * Resolve a translated metric-widget SUB-CAPTION within a dashboard.
-     * Convention: `{ns}.dashboards.{dashboardName}.widgets.{widgetId}.subCaption`.
-     * Returns undefined when neither metadata nor translation provides one.
-     *
-     * Deliberately its OWN key, not a second reader of `widgets.{id}.description`.
-     * The KPI card renders two authored strings from two different fields — the
-     * shared card header's `widget.description`, and the sub-caption under the
-     * value, which is authored as `widget.options.description` — and the
-     * objectstack#5428 item-4 ruling (2026-08-06) settled that they get two
-     * keys, not one: 「两个作者字段两个 key」. Collapsing them would make one
-     * translation entry silently retarget the other field on any widget type
-     * that renders both at once (`kpi`, `gauge`, `bullet` — every metric-family
-     * type except the self-contained `metric`).
-     *
-     * `subCaption` is the member objectstack#8056 added to the widget
-     * translation node for exactly this, shipped in `@objectstack/spec@17.0.0`.
-     * The server-side resolver reads the SAME key and overlays it onto
-     * `options.description` (`translateDashboard`), so a document served
-     * through `/meta` and a document translated here land on the same string —
-     * this is the client half of one convention, not a second dialect.
-     */
-    widgetSubCaption: (dashboardName: string, widgetId: string, fallback?: string) => {
-      const fb = fallback ?? '';
-      const resolved = resolve(dashboardSuffixes(dashboardName, `widgets.${widgetId}.subCaption`), fb);
-      return resolved || undefined;
-    },
-
     /**
      * Resolve translated page label, falling back to pageDef.label.
      * Convention: `{ns}.pages.{pageName}.label`.
 
@@ -834,7 +834,7 @@ keeps a published edit over that catalog: an explicit override beats the
 packaged default. Pass `localized={true}` when your document came from such a
 read. The renderer then draws these texts as given:
 
-- the widget `title`, `description` and sub-caption (`options.description`);
+- the widget `title` and `description`;
 - its own header `label` and `description`.
 
 An inline per-locale map is still collapsed to the active language. The client
 
@@ -17,12 +17,12 @@ import {
   resolveWidgetType,
   toDashboardNodeType,
   unsupportedWidgetSchema,
+  withoutRetiredSubCaption,
   type DashboardWidgetSlotEntry,
 } from './widgetDispatch';
 import { LEGACY_RETIRED_WIDGET_SCHEMA, isLegacyRetiredWidget, isRetiredEnvelopeNode } from './legacyRetiredWidget';
 import { DatasetWidget } from './DatasetWidget';
 import type { DashboardChartRenderSchema } from './chartRenderHandoff';
-import { useWidgetSubCaption } from './widgetSubCaption';
 import { useDashboardAutoRefresh } from './useDashboardAutoRefresh';
 
 /** Bridges editMode transitions to the ObjectUI DnD system when a DndProvider is present. */
@@ -175,22 +175,6 @@ export const DashboardGridLayout: React.FC<DashboardGridLayoutProps> = ({
       composeSeriesLabel(t, fieldLabel, objectName, yField, aggFn),
     [t, fieldLabel],
   );
-  /**
-   * The metric tile's sub-caption resolver — objectui#8889.
-   *
-   * This surface routes a dataset-bound widget to `DatasetWidget` exactly as
-   * `DashboardRenderer` does (objectui#4614), so it owes that component the
-   * same resolved sub-caption. It is the SAME hook the sibling calls, not a
-   * second copy of the composition: the field's invariant is that its two
-   * channels "can never disagree", and two independent resolvers are precisely
-   * how they would.
-   *
-   * `schema.name` is the dashboard name every convention key on this surface is
-   * built from (`BaseSchema.name`, which `DashboardComponentSchema` extends).
-   * Absent it the hook degrades to the authored value alone — the same silent
-   * degradation the sibling's title/description lookups perform.
-   */
-  const tWidgetSubCaption = useWidgetSubCaption(schema.name);
   // The refresh indicator, the manual handler and the auto-refresh timer come
   // from the one implementation this component shares with `DashboardRenderer`
   // (objectui#8820), which is also the only place `refreshIntervalSeconds` is
@@ -415,7 +399,10 @@ export const DashboardGridLayout: React.FC<DashboardGridLayoutProps> = ({
         // Its declared type is `DashboardMetricNodeSchema`, the
         // `CustomNodeRegistry` entry `./widgetDispatch` adds (objectui#11466).
         type: DASHBOARD_NODE_TYPES.metric,
-        ...options,
+        // The card draws no sub-caption from `options` (objectui#11389, ruling
+        // C): the spread drops the retired `description` key, the same way
+        // `DashboardRenderer`'s metric arm does.
+        ...withoutRetiredSubCaption(options),
         label,
         value: options.value ?? rows[0]?.[valueField] ?? '—',
       };
@@ -711,13 +698,6 @@ export const DashboardGridLayout: React.FC<DashboardGridLayoutProps> = ({
                           ? <DatasetWidget
                               widget={datasetWidget}
                               dataSource={dataSource}
-                              /* objectui#8889 — dispatch site 2 of 2, and the half that
-                                 objectui#4614 exists to stop anyone from forgetting: the
-                                 sibling passing this alone would fix one surface and leave
-                                 this one silently unchanged. `?? null` says "a surface
-                                 resolved it, to nothing", which is NOT the same as the
-                                 prop being absent — see the prop's docblock. */
-                              subCaption={tWidgetSubCaption(datasetWidget) ?? null}
                             />
                           : <SchemaRenderer schema={componentSchema} />}
                       </div>