@@ -0,0 +1,80 @@
+---
+'@object-ui/types': minor
+---
+
+**Breaking for authored metadata:** `ObjectViewSchema.viewTabBar` is RETIRED
+(objectui#7779, maintainer ruling B of 2026-09-06; ADR-0049 enforce-or-remove).
+An `object-view` node that authors `viewTabBar` no longer validates: the parse
+fails loudly on the `viewTabBar` path with the explanation in the message, and
+the TS member is a `?: never` tombstone so the same document is refused at
+compile time. Nothing ever read the key off the node — the tab-bar UX config
+(`ViewTabBarConfig`, still exported) is the `config` prop of the `ViewTabBar`
+component, composed by the host, not authored metadata. Remove the key.
+
+In the same change, eight `ObjectViewSchema` keys the TypeScript interface
+declared and the Zod mirror never did are now ENFORCED. Until now a document
+authoring any of them passed the validator unexamined through `BaseSchema`'s
+passthrough while the published type invited the author to write it — declared
+but not enforced (objectui#7279's `UnmirroredDeclared` reading). Each key now
+admits exactly what the declaration promises and refuses a wrong-typed value at
+its own path; a correctly typed document is untouched.
+
+| key | disposition | how |
+| --- | --- | --- |
+| `navigation` | mirrored | the spec's `ListViewSchema.navigation` slot by reference (`NavigationConfigSchema`, optional) |
+| `searchableFields` | mirrored | the spec's `ListViewSchema.searchableFields` slot by reference (`string[]`, optional) |
+| `filterableFields` | mirrored | the spec's `ListViewSchema.filterableFields` slot by reference (`string[]`, optional; the spec marks it a legacy shorthand for `userFilters.fields`) |
+| `allowCreateView` | mirrored | the sibling `ViewSwitcherSchema.allowCreateView` slot by reference — the renderer forwards the value verbatim into the `view-switcher` node it composes |
+| `viewActions` | mirrored | the sibling `ViewSwitcherSchema.viewActions` slot by reference, for the same reason |
+| `defaultViewType` | mirrored | local literal: the declaration's seven-value union (`grid`, `kanban`, `gallery`, `calendar`, `timeline`, `gantt`, `map`) — read as `schema.defaultViewType \|\| 'grid'` |
+| `defaultListView` | mirrored | local literal: `string` — read as `namedListViews?.[schema.defaultListView]` |
+| `showViewSwitcher` | mirrored | local literal: `boolean` — read as `schema.showViewSwitcher === true` |
+| `viewTabBar` | RETIRED | `?: never` + `retirementTombstone()` — zero reads on the node |
+| `listViews` | unchanged (still unmirrored) | see below |
+
+**What was measured.** Every reading was taken on the `object-view` node
+renderer (`packages/plugin-view/src/ObjectView.tsx`, registered by
+`plugin-view/src/index.tsx`) with `schema.objectName` / `schema.layout` as the
+positive controls of the same `schema.KEY` query, so each zero is a reading;
+the repo-wide census of `viewTabBar` finds the key in no source file outside
+`@object-ui/types` (two doc tables listed it as authorable and are corrected
+here). The spec side was read through the installed pin
+(`@objectstack/spec@17.2.0`, `ui` entry, 117 exported object schemas walked;
+control keys `objectName` / `columns` / `navigation` / `listViews` hit): the
+three spec-modelled keys are optional slots on `ListViewSchema` and
+`ObjectListViewSchema`; the six local keys have no spec slot anywhere.
+
+**`listViews` stays unmirrored, on the ruling's own fallback clause.** The
+declaration's value is the local `NamedListView` (about 52 members, of which the
+renderer reads seven — `label`, `type`, `columns`, `filter`, `sort`, `options`,
+`data`); the spec's `ViewSchema.listViews` is a record of the STRICT
+`ObjectListViewSchema`, which requires `columns` and refuses `options`, ObjectQL
+tuple filters and `default` — that is, it refuses the named views this package's
+own README and `content/docs/api/schema-reference.md` teach (`{ label: 'All
+Users' }` fails at `columns`; `filter: [["owner", "=", "..."]]` fails at
+`filter.0`). Mirroring the spec value would lose documented behaviour; mirroring
+the local value would enforce roughly 45 unread members into the contract — the
+very thing ruling B refused for the six local keys. The key therefore stays in
+the parity ledger with that measurement, pinned, until the maintainer decides its
+value type. It is not papered over with `z.any()`.
+
+**Who is affected:** an author who wrote `viewTabBar` on an `object-view` node
+(remove it), or who wrote a wrong-typed value for one of the eight keys — e.g.
+`defaultViewType: 'tree'` (host-composition-only, objectui#5321),
+`navigation: 'page'` (write `navigation: { mode: 'page' }`),
+`searchableFields: 'name'` (write an array), `viewActions: 'share'` (write
+`[{ type: 'share' }]`). Such documents used to pass validation and render with
+the key ignored; they now fail at the key with the reason.
+
+**Who is NOT affected:** every correctly typed document, and every document
+that never wrote these keys — `absent` stays valid on all nine. No renderer
+changed. The parity ledger (`zod-mirror-parity.test.ts`) records the move:
+`UnmirroredDeclared` 14 entries / 96 keys to 14 / 87, the `ObjectViewSchema`
+entry re-derived into the SPEC-DERIVED half because the mirror now references
+the spec in code.
+
+Graded `minor`, not `patch`: this narrows the accepted input set, which is
+breaking for any author who wrote the tolerated spellings. It is not `major`
+per this repo's fixed-group convention (objectui's own breaking changes ship as
+`minor`; the group's major tracks `@objectstack` — AGENTS.md 版本号策略,
+mechanically enforced by `scripts/check-changeset-no-major.mjs`).
@@ -573,10 +573,10 @@ under your own key" — it ships **no schema types**. The authored
 
 | Import from `@object-ui/types` | What it types |
 | --- | --- |
-| `ObjectViewSchema` | the whole `type: 'object-view'` node — `objectName` (required), `title`, `description`, `layout`, `defaultViewType`, `listViews`, `defaultListView`, `navigation`, `table`, `form`, `searchableFields`, `filterableFields`, the `show*` flags, `operations`, `onNavigate`, `viewTabBar`, `viewActions` |
+| `ObjectViewSchema` | the whole `type: 'object-view'` node — `objectName` (required), `title`, `description`, `layout`, `defaultViewType`, `listViews`, `defaultListView`, `navigation`, `table`, `form`, `searchableFields`, `filterableFields`, the `show*` flags, `operations`, `onNavigate`, `allowCreateView`, `viewActions` (`viewTabBar` is retired — objectui#7779 — and refused by name) |
 | `NamedListView` | one entry of `listViews` |
 | `ViewNavigationConfig` | `navigation` — row/item click behaviour |
-| `ViewTabBarConfig` | `viewTabBar` — tab-bar UX (inline add, overflow, indicators) |
+| `ViewTabBarConfig` | the `config` prop of `ViewTabBar` — tab-bar UX (inline add, overflow, indicators), composed by the host; not an `object-view` node key |
 
 ```typescript
 import type { ObjectViewSchema } from '@object-ui/types';
 
@@ -639,10 +639,10 @@ re-exporting, so import it from there:
 
 | Import from `@object-ui/types` | What it types |
 | --- | --- |
-| `ObjectViewSchema` | the whole `type: 'object-view'` node — `objectName` (required), `title`, `description`, `layout`, `defaultViewType`, `listViews`, `defaultListView`, `navigation`, `table`, `form`, `searchableFields`, `filterableFields`, `show*`, `operations`, `onNavigate`, `viewTabBar`, `viewActions` |
+| `ObjectViewSchema` | the whole `type: 'object-view'` node — `objectName` (required), `title`, `description`, `layout`, `defaultViewType`, `listViews`, `defaultListView`, `navigation`, `table`, `form`, `searchableFields`, `filterableFields`, `show*`, `operations`, `onNavigate`, `allowCreateView`, `viewActions` (`viewTabBar` is retired — objectui#7779 — and refused by name) |
 | `NamedListView` | one entry of `listViews` |
 | `ViewNavigationConfig` | `navigation` — row/item click behaviour |
-| `ViewTabBarConfig` | `viewTabBar` — tab-bar UX (inline add, overflow, indicators) |
+| `ViewTabBarConfig` | the `config` prop of `ViewTabBar` — tab-bar UX (inline add, overflow, indicators), composed by the host; not an `object-view` node key |
 
 ```typescript
 import type { ObjectViewSchema } from '@object-ui/types';
 
@@ -238,16 +238,20 @@ const tsOwnKeys = Object.keys(TS_OWN_KEYS);
  * interface only, which is the drift this guard exists to stop.
  */
 const TS_ONLY_BACKLOG = new Set<string>([
-  'defaultViewType',
+  // objectui#7779 (maintainer ruling B, 2026-09-06) closed nine of the ten gaps
+  // this set held: `navigation` / `searchableFields` / `filterableFields` are the
+  // spec's `ListViewSchema` slots by reference, `allowCreateView` / `viewActions`
+  // the sibling `ViewSwitcherSchema` slots by reference, `defaultViewType` /
+  // `defaultListView` / `showViewSwitcher` local literals after a reader census,
+  // and `viewTabBar` is a tombstone on BOTH faces (declared, refused by name) —
+  // so none of the nine is TS-only any more. The one that stays:
+  //
+  // `listViews` — its VALUE type is undecided (the declaration's `NamedListView`
+  // vs the spec's strict `ObjectListViewSchema`, which refuses the named views
+  // this package's docs teach); it stays in the parity ledger with that
+  // measurement (`zod-mirror-parity.test.ts`, `UnmirroredDeclared`) until the
+  // maintainer decides. ⛔ Not closed with `z.any()`.
   'listViews',
-  'defaultListView',
-  'navigation',
-  'searchableFields',
-  'filterableFields',
-  'showViewSwitcher',
-  'viewTabBar',
-  'allowCreateView',
-  'viewActions',
   // Not a zod gap: a function, so it CANNOT be declared in a JSON protocol
   // schema. Recorded here rather than exempted silently.
   'onNavigate',
@@ -268,9 +272,9 @@ const SPEC_COUNTERPART: Record<string, { schema: unknown; key: string; note: str
   description: { schema: SpecListViewSchema, key: 'description', note: 'same name, same i18n type difference' },
   layout: { schema: SpecNavigationConfigSchema, key: 'mode', note: 'spec is a superset; fold into `navigation`, do not keep a parallel three-value enum' },
   defaultViewType: { schema: SpecListViewSchema, key: 'type', note: 'spec is a superset (adds chart, tree); ListViewSchema already imports this enum by reference' },
-  navigation: { schema: SpecListViewSchema, key: 'navigation', note: 'objectui ViewNavigationConfig is a hand-copied duplicate — re-export by reference' },
-  searchableFields: { schema: SpecListViewSchema, key: 'searchableFields', note: 'identical string[] — re-export by reference' },
-  filterableFields: { schema: SpecListViewSchema, key: 'filterableFields', note: 'identical; inherits the spec\'s "legacy shorthand for userFilters.fields" deprecation' },
+  navigation: { schema: SpecListViewSchema, key: 'navigation', note: 'DONE (objectui#7779): the zod mirror is this very slot by reference (`SpecListViewSchema.shape.navigation`); the TS face is the spec\'s `NavigationConfig` (objectui#4588)' },
+  searchableFields: { schema: SpecListViewSchema, key: 'searchableFields', note: 'DONE (objectui#7779): the zod mirror is this slot by reference' },
+  filterableFields: { schema: SpecListViewSchema, key: 'filterableFields', note: 'DONE (objectui#7779): the zod mirror is this slot by reference, and so inherits the spec\'s "legacy shorthand for userFilters.fields" deprecation' },
   showSearch: { schema: SpecUserActionsConfigSchema, key: 'search', note: 'scope A step 3, same fold' },
   showFilters: { schema: SpecUserActionsConfigSchema, key: 'filter', note: 'scope A step 3, same fold' },
   showSort: { schema: SpecUserActionsConfigSchema, key: 'sort', note: 'scope A step 3, same fold' },
@@ -304,7 +308,12 @@ const SANCTIONED_LOCAL = new Set<string>([
   'operations',
   // View-management chrome. No spec counterpart —
   // `UserActionsConfigSchema.buttons` is a string[] of action ids, a different
-  // shape.
+  // shape. `allowCreateView` / `viewActions` are READ (forwarded verbatim into
+  // the `view-switcher` node) and mirrored by reference to that sibling's slots
+  // (objectui#7779); `viewTabBar` is RETIRED by the same card — a `?: never` /
+  // `retirementTombstone()` twin, still DECLARED on both faces so an authored
+  // value is refused by name, which is why it stays in this set: the spec models
+  // no such key, and the tombstone is objectui-only surface.
   'allowCreateView',
   'viewActions',
   'viewTabBar',
@@ -388,14 +397,17 @@ describe('ObjectViewSchema declared-surface consistency (#2890 scope B)', () =>
     ).toEqual([...TS_ONLY_BACKLOG].sort());
   });
 
-  it('reproduces the 2026-07 audit\'s declared-surface figures', () => {
+  it('reproduces the 2026-07 audit\'s declared-surface figures, moved by objectui#7779', () => {
     // Kept executable so "we closed the gap" is a test edit, not a claim.
     //
-    // The audit reported "declared in zod: 13". Reproduced here as 11
-    // non-envelope keys plus the 2 narrowed envelope keys above — the same 13
-    // keys, with the arithmetic shown rather than asserted.
-    expect(ouiZodKeys.filter((k) => !ENVELOPE.has(k))).toHaveLength(11);
-    expect(ouiDeclaredKeys).toHaveLength(13);
+    // The audit reported "declared in zod: 13" — reproduced then as 11
+    // non-envelope keys plus the 2 narrowed envelope keys above. objectui#7779
+    // added NINE members to the zod shape (eight mirrored keys plus the
+    // `viewTabBar` tombstone, which is a shape member so it can refuse by name):
+    // 11 + 9 = 20 non-envelope keys, 20 + 2 = 22 declared. The TS figure below
+    // did not move — every one of the nine was already declared there.
+    expect(ouiZodKeys.filter((k) => !ENVELOPE.has(k))).toHaveLength(20);
+    expect(ouiDeclaredKeys).toHaveLength(22);
     // The interface's own surface beyond the envelope. The audit counted 25
     // declared fields including the 3 whose names the envelope also owns
     // (`type`, `description`, `className`); 22 is that figure with those three