fix(tanstack): EntityGrid accepts id-less projection rows

Relax the row-type bound from { id?: number | string } to object. The grid
keys rows by index (no getRowId) and never reads id, so the stricter bound
needlessly failed TS's weak-type check against view-model rows that have a
composite identity and no id column — which the codegen explicitly emits grids
for. Backward-compatible: rows that do have id still satisfy object.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: dmealing

client/web/packages/tanstack/src/entity-grid.tsx

@@ -54,7 +54,12 @@ export interface EntityGridProps<T> {
  * Cell rendering routes through the CellRendererProvider registry, keyed by
  * `column.meta.view`. Per-column `cell` always wins if set.
  */
-export function EntityGrid<T extends { id?: number | string }>(
+// Row type is any object: the grid keys rows by index (no getRowId), so it
+// never reads `id`. A stricter `{ id?: number | string }` bound wrongly rejected
+// id-less projection rows (view models with composite identity, e.g. a
+// my-courses view keyed by user+course), which the codegen explicitly generates
+// grids for.
+export function EntityGrid<T extends object>(
   props: EntityGridProps<T>,
 ): ReactNode {
   const renderers = useCellRenderers();