Fix: Make name and label optional in FieldConfig to fix TypeScript compilation errors

The @objectstack/spec package requires name and label fields on the Field type, but when fields are defined in ObjectConfig.fields as a Record<string, FieldConfig>, the name is inferred from the record key. This change makes name and label optional in FieldConfig to match this usage pattern.

Co-authored-by: huangyiirene <7665279+huangyiirene@users.noreply.github.com>

Author: Copilot

packages/foundation/types/src/field.ts

@@ -116,7 +116,13 @@ export interface FieldOption {
  * 
  * We make certain spec fields optional since Zod applies defaults at parse time.
  */
-export interface FieldConfig extends Omit<Field, 'type' | 'options' | 'required' | 'multiple' | 'unique' | 'deleteBehavior' | 'hidden' | 'readonly' | 'encryption' | 'index' | 'externalId'> {
+export interface FieldConfig extends Omit<Field, 'name' | 'label' | 'type' | 'options' | 'required' | 'multiple' | 'unique' | 'deleteBehavior' | 'hidden' | 'readonly' | 'encryption' | 'index' | 'externalId'> {
+    /** Field name (inferred from Record key when used in ObjectConfig.fields) */
+    name?: string;
+    
+    /** Display label (derived from name if not provided) */
+    label?: string;
+    
     /** The data type of the field (extended with runtime types) */
     type: FieldType;