feat(web): las extensiones de cliente pueden ocultar campos y columnas y dejarlos de solo lectura (documentos y maestros)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/web/src/app/features/documents/document-form.page.ts

@@ -28,7 +28,7 @@ import {
   updatePayload,
   validateLayout,
 } from './document-model';
-import { type ComputedSource, PARTNER_COLUMNS, WAREHOUSE_LOOKUP, hasFolio, hasFreight, hasSeries, headerKeysOf, requiredHeaderOf } from './document-layouts';
+import { type ComputedSource, type HeaderField, PARTNER_COLUMNS, WAREHOUSE_LOOKUP, hasFolio, hasFreight, hasSeries, headerKeysOf, keysOfFields, requiredHeaderOf } from './document-layouts';
 import { type CopyOrigin, copyFromDocument, copySources, copyTargets } from './document-copy';
 import { DOCUMENT_SCREENS, type DocumentScreen, docNum, documentStatus, menuLabel } from './document-screens';
 import { OBJECT_TYPES } from './document-objects';
@@ -330,6 +330,12 @@ export class DocumentFormPage {
 
   protected str = text;
 
+  private readonly lockedKeys = new Set(this.layout.lockedKeys ?? []);
+  /** El campo se ve pero no se edita (una extensión de cliente lo dejó de solo lectura). */
+  protected locked(f: HeaderField): boolean {
+    return this.lockedKeys.size > 0 && (keysOfFields([f]).some((k) => this.lockedKeys.has(k)) || (f.type === 'computed' && this.lockedKeys.has(f.source)));
+  }
+
   /** Valor de una fila de solo lectura (número del documento, datos del socio, totales). */
   protected computedValue(source: ComputedSource): string {
     switch (source) {