feat(alertas): add alerts CRUD with stats and management UI

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/lib/api/calendario.ts

@@ -0,0 +1,28 @@
+import { apiClient } from './client';
+import type { EventoFiscal, EventoCreate, EventoUpdate } from '@horux/shared';
+
+export async function getEventos(año: number, mes?: number): Promise<EventoFiscal[]> {
+  const params = new URLSearchParams({ año: año.toString() });
+  if (mes) params.set('mes', mes.toString());
+  const response = await apiClient.get<EventoFiscal[]>(`/calendario?${params}`);
+  return response.data;
+}
+
+export async function getProximos(dias = 30): Promise<EventoFiscal[]> {
+  const response = await apiClient.get<EventoFiscal[]>(`/calendario/proximos?dias=${dias}`);
+  return response.data;
+}
+
+export async function createEvento(data: EventoCreate): Promise<EventoFiscal> {
+  const response = await apiClient.post<EventoFiscal>('/calendario', data);
+  return response.data;
+}
+
+export async function updateEvento(id: number, data: EventoUpdate): Promise<EventoFiscal> {
+  const response = await apiClient.patch<EventoFiscal>(`/calendario/${id}`, data);
+  return response.data;
+}
+
+export async function deleteEvento(id: number): Promise<void> {
+  await apiClient.delete(`/calendario/${id}`);
+}