fix(metadata-core): lock_state keeps the varchar(255) width the select column was created with

Claude-Session: https://claude.ai/code/session_0123qkvzKLQfRRRnuR8wanHJ
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/metadata-core/src/objects/sys-metadata-audit-lock-state.test.ts

@@ -19,11 +19,12 @@ import { SysMetadataAuditObject } from './sys-metadata-audit.object.js';
 describe('sys_metadata_audit.lock_state (#25013)', () => {
   const field = SysMetadataAuditObject.fields.lock_state as Record<string, unknown>;
 
-  it('is a text column with no option list of its own and no width', () => {
+  it('is a text column with no option list of its own, as wide as the select column was', () => {
     expect(field.type).toBe('text');
     expect(field).not.toHaveProperty('options');
-    // No `maxLength`: an existing `varchar(255)` column reports no width drift.
-    expect(field).not.toHaveProperty('maxLength');
+    // The `varchar(255)` a select column is created as: an existing database
+    // reports no drift (no `maxLength` would read as varchar → text).
+    expect(field.maxLength).toBe(255);
     expect(field.readonly).toBe(true);
   });
 

packages/metadata-core/src/objects/sys-metadata-audit.object.ts

@@ -193,12 +193,16 @@ export const SysMetadataAuditObject = ObjectSchema.create({
      * `Field.select([...])` shorthand used to strip the hyphen, declaring
      * `nooverlay` / `nodelete` — values no row ever held (#25013). Like `code`
      * above, the closed set lives with its writer (`MetadataLockSchema`).
-     * No `maxLength`: existing columns keep their width and report no drift.
+     * `maxLength: 255` is the `varchar(255)` the select column was created
+     * as, so an existing database reports no drift: measured with
+     * `diffManagedTable` on postgres / mysql / sqlite, no `maxLength` reads as a
+     * varchar → text type change and a narrower one as a destructive narrowing.
      */
     lock_state: Field.text({
       label: 'Lock State',
       required: false,
       readonly: true,
+      maxLength: 255,
     }),
 
     /** True when the write succeeded by bypassing a lock (Phase 3). */