Initial public release

Aurum — a self-hosted personal finance operating system: cash flow,
net worth tracking, budgets, goals, recurring payments, reports,
proactive alerts, and a compound-interest returns calculator, all
bilingual (RU/EN) and mobile-first. Ships as a three-container Docker
Compose stack (Postgres + FastAPI + nginx-served React frontend).

See README.md for setup and CONTRIBUTING.md for development.

frontend/src/hooks/useTransactions.ts

@@ -0,0 +1,56 @@
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import {
+  createTransaction,
+  deleteTransaction,
+  fetchTransactions,
+  updateTransaction,
+  type TransactionFilters,
+} from "@/api/transactions";
+import type { TransactionInput } from "@/types";
+
+function useInvalidateAfterTransactionChange() {
+  const queryClient = useQueryClient();
+  return () => {
+    queryClient.invalidateQueries({ queryKey: ["transactions"] });
+    queryClient.invalidateQueries({ queryKey: ["dashboard-summary"] });
+    queryClient.invalidateQueries({ queryKey: ["net-worth-summary"] });
+    queryClient.invalidateQueries({ queryKey: ["category-spending-report"] });
+    queryClient.invalidateQueries({ queryKey: ["category-ranking"] });
+    queryClient.invalidateQueries({ queryKey: ["budget-status"] });
+    queryClient.invalidateQueries({ queryKey: ["financial-alerts"] });
+    queryClient.invalidateQueries({ queryKey: ["advice"] });
+    queryClient.invalidateQueries({ queryKey: ["cash-flow"] });
+  };
+}
+
+export function useTransactions(filters: TransactionFilters) {
+  return useQuery({
+    queryKey: ["transactions", filters],
+    queryFn: () => fetchTransactions(filters),
+  });
+}
+
+export function useCreateTransaction() {
+  const invalidate = useInvalidateAfterTransactionChange();
+  return useMutation({
+    mutationFn: (input: TransactionInput) => createTransaction(input),
+    onSuccess: invalidate,
+  });
+}
+
+export function useUpdateTransaction() {
+  const invalidate = useInvalidateAfterTransactionChange();
+  return useMutation({
+    mutationFn: ({ id, input }: { id: number; input: Partial<TransactionInput> }) =>
+      updateTransaction(id, input),
+    onSuccess: invalidate,
+  });
+}
+
+export function useDeleteTransaction() {
+  const invalidate = useInvalidateAfterTransactionChange();
+  return useMutation({
+    mutationFn: (id: number) => deleteTransaction(id),
+    onSuccess: invalidate,
+  });
+}