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

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

apps/web/lib/hooks/use-calendario.ts

@@ -0,0 +1,47 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import * as calendarioApi from '../api/calendario';
+import type { EventoCreate, EventoUpdate } from '@horux/shared';
+
+export function useEventos(año: number, mes?: number) {
+  return useQuery({
+    queryKey: ['calendario', año, mes],
+    queryFn: () => calendarioApi.getEventos(año, mes),
+  });
+}
+
+export function useProximosEventos(dias = 30) {
+  return useQuery({
+    queryKey: ['calendario-proximos', dias],
+    queryFn: () => calendarioApi.getProximos(dias),
+  });
+}
+
+export function useCreateEvento() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (data: EventoCreate) => calendarioApi.createEvento(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['calendario'] });
+    },
+  });
+}
+
+export function useUpdateEvento() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({ id, data }: { id: number; data: EventoUpdate }) => calendarioApi.updateEvento(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['calendario'] });
+    },
+  });
+}
+
+export function useDeleteEvento() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (id: number) => calendarioApi.deleteEvento(id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['calendario'] });
+    },
+  });
+}