feat(parsers+api+ui+db): 999 ACK transaction set end-to-end (SP3 P3)

src/hooks/useAcks.ts

@@ -0,0 +1,17 @@
+import { useQuery } from "@tanstack/react-query";
+import { api, type PaginatedResponse } from "@/lib/api";
+import type { Ack } from "@/types";
+
+/**
+ * Lists 999 ACKs, newest first. Mirrors `useRemittances` but
+ * intentionally has no in-memory fallback (there is no zustand
+ * sample-data path for ACKs in v1 — the UI is empty until the
+ * backend serves real rows).
+ */
+export function useAcks(params: { limit?: number } = {}) {
+  return useQuery<PaginatedResponse<Ack>>({
+    queryKey: ["acks", params],
+    queryFn: () => api.listAcks(params),
+    enabled: api.isConfigured,
+  });
+}