@@ -0,0 +1,68 @@
+---
+'@object-ui/types': minor
+---
+
+`ObjectKanbanSchema.objectName` becomes a PRESENCE RULE on both faces — at least one of
+`bind`, `data`, `objectName` (objectui#7780).
+
+`packages/plugin-kanban/src/ObjectKanban.tsx` resolves a board's rows in four steps: the
+pre-fetched `data` PROP a parent passes (`hasExternalData`), then `bind` through
+`useDataScope(schema.bind)`, then the inline ROW ARRAY on `schema.data`, and only then a
+fetch keyed by `schema.objectName` — `rawData = (hasExternalData ? externalData :
+undefined) || boundData || schema.data || fetchedData`, with the fetch itself gated on
+`schema.objectName && !boundData && !schema.data`. Every `objectName` read is guarded.
+Both published faces nevertheless REQUIRED `objectName`, so a `bind`-only or `data`-only
+board — one that renders correctly today — was refused by the shipped validator and could
+not be annotated with its own type.
+
+**The accept set moves in one direction only.** Measured from source on `origin/main`
+`fff250ff` and on this branch, both entry paths (`ObjectKanbanSchema.safeParse` and the
+published `safeValidateSchema`), against a rebuilt `dist`:
+
+| document (all carry `groupBy`) | before | after |
+| --- | --- | --- |
+| `bind` only | refused at `objectName` (`invalid_type`) | **accepted** |
+| `data` only (raw rows) | refused at `objectName` (`invalid_type`) | **accepted** |
+| `objectName` only | accepted | accepted |
+| `objectName: ''` | accepted | accepted |
+| none of the three | refused at `objectName` | refused **on the refinement** (`RECORD_SOURCE_REQUIRED`, root path) |
+
+Nothing went from accepted to refused. Presence is `!== undefined`, matching the sibling
+predicate's wording rather than the renderer's truthiness, so an empty `objectName: ''`
+keeps validating.
+
+**⚠️ Not the map / gantt / calendar ladder, and deliberately not built on it.** Those
+three (objectui#6939, objectui#7313) resolve `data` as a `ViewData` PROVIDER BLOCK →
+`staticData` → `objectName` through the shared `resolveRecordSourceConfig`, refined by
+`requireRecordSource`. This board has **no** `staticData` rung, reads `data` as a **raw row
+array** directly, **has** a `bind` rung the other three never walk, and calls
+`getDataConfig` / `resolveRecordSourceConfig` **zero** times. The two key sets are neither
+equal nor nested, so the predicate is a new one — `requireKanbanRecordSource` — and the
+shared one is untouched.
+
+**objectui#7651 is a prior ruling and it holds.** It was ruled B and closed `not_planned`
+on 2026-09-05, refusing a sixth `getDataConfig` producer, a `ViewData` retype of the
+board's `data`, and a `staticData` rung; its epitaph is in the tree on
+`KanbanSchema.data`. Nothing here adds a rung. `data` and `bind` stay INHERITED from
+`BaseSchema` rather than re-declared on this member, and the new pin asserts that by
+IDENTITY (`shape.data === BaseSchema.shape.data`) rather than by membership, because
+membership cannot tell inherited from re-declared.
+
+**`groupBy` is untouched and stays REQUIRED** (objectui#7322, PR #7774). A record source
+and a lane key are different questions: every lane-less document above is still refused at
+`groupBy`, and the two readings PR #7774 excluded from counting as a lane-less mode — the
+`dataSource` json fragment in `content/docs/utilities/data-objectstack.mdx` and
+`ListView.tsx`'s runtime-generated node — are asserted still-refused in the new pin. The
+retired `groupField` tombstone is likewise still refused by name.
+
+Landed on both faces per the zod-mirror-parity pairing: `objectName?: string` on the
+`ObjectKanbanSchema` interface in `@object-ui/types`, `z.string().optional()` plus
+`.superRefine(requireKanbanRecordSource)` on its mirror in `@object-ui/types/zod`. The key
+sets are unchanged on both sides, so no parity ledger row and none of the objectui#7279
+header figures move. `object-calendar-record-source-7313.test.ts` loses the
+`@ts-expect-error` it carried to record where this defect class ended — leaving it would
+have reddened `TS2578` under `tsconfig.test.json` — and the literal it guarded now
+compiles, which is the assertion.
+
+Marked `minor` per this repo's version-alignment rule: a published accept set widens, and
+no declared shape narrows.
@@ -123,21 +123,32 @@ export const DATA_DOCUMENT: TsObjectCalendarSchema = {
 };
 
 /**
- * CLASS BOUNDARY, recorded without touching it (triage boundary 3 on
- * objectui#7313): `ObjectKanbanSchema` still REQUIRES `objectName`. Its
- * renderer reads `schema.data` ahead of the fetch and guards every
- * `objectName` read, so it carries the same defect class — but that block is
- * objectui#7322's, and this control only says where the class currently ends.
- * When a card moves the kanban's `objectName` to optional, this directive is
- * the line that card deletes.
+ * CLASS BOUNDARY — and it MOVED. This literal used to carry a
+ * `@ts-expect-error` reading "objectName is still required on
+ * ObjectKanbanSchema", recorded here by objectui#7313 as the one deliberate
+ * error in this file, with the note "when a card moves the kanban's
+ * `objectName` to optional, this directive is the line that card deletes".
+ * objectui#7780 is that card, and this is that deletion: the directive is gone
+ * and the literal now compiles, which is the assertion — an unused
+ * `@ts-expect-error` is `TS2578`, so leaving it would have reddened
+ * `tsconfig.test.json` rather than quietly meaning nothing.
  *
- * `groupBy` is supplied because objectui#7322 made it the required lane key
- * (and retired `groupField`), so `objectName` is the ONE member this literal
- * is missing — the directive would otherwise be satisfied by an unrelated
- * omission and stop saying anything about `objectName`.
+ * ⚠️ It is NOT the same fix as this file's own subject. `object-calendar`
+ * joined the `object-map` / `object-gantt` ladder — `data` (a `ViewData`
+ * provider block) → `staticData` → `objectName`, `requireRecordSource`. The
+ * kanban board walks its own: pre-fetched `data` prop → `bind` → an inline ROW
+ * ARRAY on `data` → `objectName`, with no `staticData` rung, and objectui#7651
+ * (ruled B, closed `not_planned`) refuses giving it the shared one. Its
+ * refinement is `requireKanbanRecordSource`, written for that ladder, and the
+ * verdict table lives in `object-kanban-record-source-7780.test.ts`.
+ *
+ * `groupBy` is still supplied, and now for a second reason as well as the
+ * first: objectui#7322 made it the required lane key, so it was the only way
+ * `objectName` could be the ONE member this literal was missing — and
+ * objectui#7780 deliberately did NOT touch it, so this literal also witnesses
+ * that a record source and a lane key stayed different questions.
  */
-// @ts-expect-error — objectName is still required on ObjectKanbanSchema (the one deliberate error here)
-export const KANBAN_STILL_REQUIRES_OBJECT_NAME: TsObjectKanbanSchema = {
+export const KANBAN_NO_LONGER_REQUIRES_OBJECT_NAME: TsObjectKanbanSchema = {
   type: 'object-kanban',
   groupBy: 'status',
 };