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-alertas.ts

@@ -0,0 +1,61 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import * as alertasApi from '../api/alertas';
+import type { AlertaCreate, AlertaUpdate } from '@horux/shared';
+
+export function useAlertas(filters?: { leida?: boolean; resuelta?: boolean }) {
+  return useQuery({
+    queryKey: ['alertas', filters],
+    queryFn: () => alertasApi.getAlertas(filters),
+  });
+}
+
+export function useAlertasStats() {
+  return useQuery({
+    queryKey: ['alertas-stats'],
+    queryFn: alertasApi.getStats,
+  });
+}
+
+export function useCreateAlerta() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (data: AlertaCreate) => alertasApi.createAlerta(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['alertas'] });
+      queryClient.invalidateQueries({ queryKey: ['alertas-stats'] });
+    },
+  });
+}
+
+export function useUpdateAlerta() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({ id, data }: { id: number; data: AlertaUpdate }) => alertasApi.updateAlerta(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['alertas'] });
+      queryClient.invalidateQueries({ queryKey: ['alertas-stats'] });
+    },
+  });
+}
+
+export function useDeleteAlerta() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: (id: number) => alertasApi.deleteAlerta(id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['alertas'] });
+      queryClient.invalidateQueries({ queryKey: ['alertas-stats'] });
+    },
+  });
+}
+
+export function useMarkAllAsRead() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: alertasApi.markAllAsRead,
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['alertas'] });
+      queryClient.invalidateQueries({ queryKey: ['alertas-stats'] });
+    },
+  });
+}