fix(grid): list column header falls back to field label, not prettified name (#1991)

A bare { field } column (no explicit label) rendered its header from the prettified
machine name even when the field had a localized label, so non-English apps showed
English column headers. ObjectGrid now resolves header = column.label -> schema field
label -> prettified name, matching the other header sites (lines ~1027/1104).

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: os-zhuang

.changeset/grid-column-header-field-label.md

@@ -0,0 +1,12 @@
+---
+'@object-ui/plugin-grid': patch
+---
+
+fix(grid): list column headers fall back to the field's label, not the prettified machine name
+
+A view column declared as a bare `{ field: 'request_title' }` (no explicit `label`) rendered
+its header from the prettified machine name ("Request title") even when the field had a
+localized label ("申请标题"). On a non-English app that surfaced English column headers despite
+fully-localized field labels. ObjectGrid now resolves the header as
+`column.label → schema field label → prettified name`, matching the other header-resolution
+sites in the same file. Found dogfooding AI-built Chinese apps.

packages/plugin-grid/src/ObjectGrid.tsx

@@ -860,7 +860,13 @@ export const ObjectGrid: React.FC<ObjectGridProps> = ({
           return (cols as ListColumn[])
             .filter((col) => col?.field && typeof col.field === 'string' && !col.hidden)
             .map((col, colIndex) => {
-              const rawHeader = resolveColumnLabel(col.label) || col.field.charAt(0).toUpperCase() + col.field.slice(1).replace(/_/g, ' ');
+              // Fall back to the SCHEMA FIELD's label before prettifying the machine
+              // name — otherwise a column declared as bare { field } shows an English
+              // name-derived header (e.g. "Request title") even when the field has a
+              // localized label (e.g. "申请标题") on a non-English app.
+              const rawHeader = resolveColumnLabel(col.label)
+                || resolveColumnLabel(objectSchema?.fields?.[col.field]?.label)
+                || col.field.charAt(0).toUpperCase() + col.field.slice(1).replace(/_/g, ' ');
               const header = schema.objectName ? resolveFieldLabel(schema.objectName, col.field, rawHeader) : rawHeader;
 
               // Build custom cell renderer based on column configuration