feat: add fixed asset classes management page and embed functionality

- Implemented a new page for managing fixed asset classes with full CRUD functionality.
- Added filtering options for searching classes by code, description, type, and fraction.
- Integrated dialogs for inserting, editing, and deleting classes with validation.
- Enhanced error handling and user feedback with toast notifications.
- Created an embedded iframe for the fixed asset classes page in the merchandise section.

frontend/src/lib/api/dashboard/a24/fa_classes.ts

@@ -0,0 +1,110 @@
+/**
+ * API para gestión de Fixed Asset Classes (Clases de Activos Fijos A24)
+ */
+import { api } from '$lib/api';
+import type { ApiResponse } from '$lib/api';
+
+export interface FAClass {
+	id: number;
+	tenant_id: number;
+	company_id: number;
+	class_id: number;
+	import_tariff_code: string | null;
+	import_tariff_type: string | null;
+	export_tariff_code: string | null;
+	export_tariff_type: string | null;
+	depreciation_rate: number | null;
+	fda_code: string | null;
+	eccn_code: string | null;
+	class_enabled: boolean | null;
+	created_at: string;
+	updated_at: string;
+}
+
+export interface FAClassCreate {
+	class_id: number;
+	import_tariff_code?: string | null;
+	import_tariff_type?: string | null;
+	export_tariff_code?: string | null;
+	export_tariff_type?: string | null;
+	depreciation_rate?: number | null;
+	fda_code?: string | null;
+	eccn_code?: string | null;
+	class_enabled?: boolean;
+}
+
+export interface FAClassUpdate {
+	import_tariff_code?: string | null;
+	import_tariff_type?: string | null;
+	export_tariff_code?: string | null;
+	export_tariff_type?: string | null;
+	depreciation_rate?: number | null;
+	fda_code?: string | null;
+	eccn_code?: string | null;
+	class_enabled?: boolean;
+}
+
+export interface FAClassListResponse {
+	items: FAClass[];
+	total: number;
+	page: number;
+	page_size: number;
+}
+
+export interface FAClassListParams {
+	company_id: number;
+	page?: number;
+	page_size?: number;
+	class_id?: number;
+	fda_code?: string;
+	class_enabled?: boolean;
+}
+
+/**
+ * API de Fixed Asset Classes
+ */
+export const faClassesApi = {
+	/**
+	 * Obtener lista de clases de activos fijos con paginación
+	 */
+	list: (params: FAClassListParams): Promise<ApiResponse<FAClassListResponse>> => {
+		const { company_id, page = 1, page_size = 50, ...filters } = params;
+		const queryParams = new URLSearchParams({
+			company_id: company_id.toString(),
+			page: page.toString(),
+			page_size: page_size.toString(),
+			...Object.fromEntries(
+				Object.entries(filters).filter(([_, v]) => v !== undefined).map(([k, v]) => [k, String(v)])
+			)
+		});
+		return api.get(`/v1/a24/fa/classes/?${queryParams}`);
+	},
+
+	/**
+	 * Obtener una clase de activo fijo por ID
+	 */
+	get: (id: number, company_id: number): Promise<ApiResponse<FAClass>> => {
+		return api.get(`/v1/a24/fa/classes/${id}?company_id=${company_id}`);
+	},
+
+	/**
+	 * Crear una nueva clase de activo fijo
+	 */
+	create: (data: FAClassCreate, company_id: number): Promise<ApiResponse<FAClass>> => {
+		return api.post(`/v1/a24/fa/classes/?company_id=${company_id}`, data);
+	},
+
+	/**
+	 * Actualizar una clase de activo fijo existente
+	 */
+	update: (id: number, data: FAClassUpdate, company_id: number): Promise<ApiResponse<FAClass>> => {
+		return api.put(`/v1/a24/fa/classes/${id}?company_id=${company_id}`, data);
+	},
+
+	/**
+	 * Eliminar una clase de activo fijo
+	 */
+	delete: (id: number, company_id: number): Promise<ApiResponse<void>> => {
+		return api.delete(`/v1/a24/fa/classes/${id}?company_id=${company_id}`);
+	}
+};

frontend/src/lib/api/dashboard/a76/classes.ts

@@ -103,5 +103,12 @@ export const classesApi = {
 	 */
 	delete: (id: number, company_id: number): Promise<ApiResponse<void>> => {
 		return api.delete(`/v1/a76/classes/${id}?company_id=${company_id}`);
+	},
+
+	/**
+	 * Inicializar datos semilla de clases de activo fijo
+	 */
+	seed: (company_id: number, client_id: number): Promise<ApiResponse<{ message: string; count: number }>> => {
+		return api.post(`/v1/a76/classes/seed?company_id=${company_id}&client_id=${client_id}`, {});
 	}
 };