Refactor authentication handling and API calls in dashboard routes

- Centralized API URL configuration and token management in $lib/server/api.ts.
- Replaced direct token access with a centralized method for retrieving tokens.
- Updated all dashboard reference data routes to use authenticatedFetch for API calls, improving token refresh handling.
- Simplified login route by utilizing centralized token management functions.
- Added a new layout file for the dashboard to pass user and company data to the client.

frontend/src/routes/dashboard/reference_data/payment_methods/+page.server.ts

@@ -1,12 +1,13 @@
 import type { PageServerLoad } from './$types';
+import { getAuthTokens, authenticatedFetch } from '$lib/server/api';
 
 export const load: PageServerLoad = async ({ cookies, fetch, url, parent }) => {
 	// Esperar a que el layout padre valide/refresque el token
 	await parent();
 	
-	const token = cookies.get('access_token');
+	const { accessToken } = getAuthTokens(cookies);
 	
-	if (!token) {
+	if (!accessToken) {
 		return {
 			error: 'No authenticated',
 			items: [],
@@ -21,25 +22,12 @@ export const load: PageServerLoad = async ({ cookies, fetch, url, parent }) => {
 		const page = parseInt(url.searchParams.get('page') || '1');
 		const pageSize = parseInt(url.searchParams.get('page_size') || '50');
 
-		// Configurar la URL de la API para SSR
-		let apiUrl = process.env.INTERNAL_API_URL;
-		if (!apiUrl) {
-			apiUrl = import.meta.env.VITE_API_URL;
-			// Reemplazar 'localhost' con 'backend' para llamadas desde el servidor (SSR)
-			apiUrl = apiUrl?.replace('localhost', 'backend').replace('127.0.0.1', 'backend');
-		}
-		
-		// Normalizar la URL
-		const baseUrl = apiUrl?.endsWith('/') ? apiUrl : `${apiUrl}/`;		
-
-		const response = await fetch(
-			`${baseUrl}v1/public/refrence_data/payment-methods?page=${page}&page_size=${pageSize}`,
-			{
-				headers: {
-					'Authorization': `Bearer ${token}`,
-					'Content-Type': 'application/json'
-				}
-			}
+		// Usar authenticatedFetch para manejar automáticamente el refresh de tokens
+		const response = await authenticatedFetch(
+			`v1/public/refrence_data/payment-methods?page=${page}&page_size=${pageSize}`,
+			{},
+			cookies,
+			fetch
 		);
 
 		if (!response.ok) {