Add sub-categories to affirmation categories

Add self-referential parent/child relation on AffirmationCategory for
   one-level hierarchy. Update AffirmationForm with two-level category and
   sub-category dropdowns, server actions with find-or-create hierarchy
   logic, AffirmationList with Parent

src/lib/svelte-admin/registry.ts

@@ -96,7 +96,7 @@ const models: AdminModelConfig[] = [
 		displayName: 'Affirmations',
 		displayNameSingular: 'Affirmation',
 		idType: 'String',
-		include: { solfeggioFrequency: true, category: true },
+		include: { solfeggioFrequency: true, category: { include: { parent: true } } },
 		listFields: ['name', 'category.name', 'solfeggioFrequency.name', 'price'],
 		searchFields: ['name', 'content'],
 		formFields: ['name', 'content', 'solfeggioFrequencyId', 'categoryId', 'price'],
@@ -152,13 +152,17 @@ const models: AdminModelConfig[] = [
 		displayName: 'Affirmation Categories',
 		displayNameSingular: 'Affirmation Category',
 		idType: 'Int',
-		include: { affirmations: true },
-		listFields: ['name'],
+		include: { affirmations: true, children: true, parent: true },
+		listFields: ['name', 'parent.name'],
 		searchFields: ['name'],
-		formFields: ['name'],
+		formFields: ['name', 'parentId'],
 		readonlyFields: ['id'],
 		fieldTypes: {
-			name: 'String'
+			name: 'String',
+			parentId: 'Int'
+		},
+		relationOptions: {
+			parentId: { model: 'AffirmationCategory', labelField: 'name', valueField: 'id' }
 		},
 		relatedRecords: [
 			{
@@ -167,6 +171,13 @@ const models: AdminModelConfig[] = [
 				type: 'has-many',
 				displayFields: ['name', 'price'],
 				editSlug: 'affirmations'
+			},
+			{
+				relationKey: 'children',
+				label: 'Sub-categories',
+				type: 'has-many',
+				displayFields: ['name'],
+				editSlug: 'affirmation-categories'
 			}
 		]
 	},

src/lib/svelte-admin/types.ts

@@ -25,7 +25,7 @@ export type AdminModelConfig = {
 	displayName: string;
 	displayNameSingular: string;
 	idType: 'String' | 'Int';
-	include?: Record<string, boolean>;
+	include?: Record<string, boolean | { include: Record<string, boolean> }>;
 	listFields: string[];
 	searchFields: string[];
 	formFields: string[];