Initial commit: MyMidas personal finance tracker

Full-stack self-hosted finance app with FastAPI backend and React frontend.

Features:
- Accounts, transactions, budgets, investments with GBP base currency
- CSV import with auto-detection for 10 UK bank formats
- ML predictions: spending forecast, net worth projection, Monte Carlo
- 7 selectable themes (Obsidian, Arctic, Midnight, Vault, Terminal, Synthwave, Ledger)
- Receipt/document attachments on transactions (JPEG, PNG, WebP, PDF)
- AES-256-GCM field encryption, RS256 JWT, TOTP 2FA, RLS, audit log
- Encrypted nightly backups + key rotation script
- Mobile-responsive layout with bottom nav

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/api/accounts.ts

@@ -0,0 +1,107 @@
+import { api } from "./client";
+
+export interface Account {
+  id: string;
+  name: string;
+  institution: string | null;
+  type: string;
+  currency: string;
+  current_balance: number;
+  credit_limit: number | null;
+  interest_rate: number | null;
+  is_active: boolean;
+  include_in_net_worth: boolean;
+  color: string;
+  icon: string | null;
+  notes: string | null;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface AccountCreate {
+  name: string;
+  institution?: string;
+  type: string;
+  currency?: string;
+  credit_limit?: number;
+  interest_rate?: number;
+  include_in_net_worth?: boolean;
+  color?: string;
+  opening_balance?: number;
+  notes?: string;
+}
+
+export async function getAccounts(): Promise<Account[]> {
+  const res = await api.get("/accounts");
+  return res.data;
+}
+
+export async function createAccount(data: AccountCreate): Promise<Account> {
+  const res = await api.post("/accounts", data);
+  return res.data;
+}
+
+export async function updateAccount(id: string, data: Partial<AccountCreate>): Promise<Account> {
+  const res = await api.put(`/accounts/${id}`, data);
+  return res.data;
+}
+
+export async function deleteAccount(id: string): Promise<void> {
+  await api.delete(`/accounts/${id}`);
+}
+
+export interface CsvMapping {
+  date: string;
+  description: string;
+  amount: string | null;
+  debit: string | null;
+  credit: string | null;
+  balance: string | null;
+  reference: string | null;
+}
+
+export interface ImportPreview {
+  detected_format: string | null;
+  headers: string[];
+  mapping: CsvMapping;
+  total_rows: number;
+  preview: {
+    date_raw: string;
+    description_raw: string;
+    amount_raw: number | null;
+    balance_raw?: string;
+  }[];
+}
+
+export async function previewImport(accountId: string, file: File): Promise<ImportPreview> {
+  const form = new FormData();
+  form.append("file", file);
+  const res = await api.post(`/accounts/${accountId}/import/preview`, form);
+  return res.data;
+}
+
+export async function importCsvToAccount(
+  accountId: string,
+  file: File,
+  mapping: CsvMapping
+): Promise<{ imported: number; skipped: number }> {
+  const form = new FormData();
+  form.append("file", file);
+  form.append("date_col", mapping.date);
+  form.append("description_col", mapping.description);
+  form.append("amount_col", mapping.amount ?? "");
+  form.append("debit_col", mapping.debit ?? "");
+  form.append("credit_col", mapping.credit ?? "");
+  const res = await api.post(`/accounts/${accountId}/import`, form);
+  return res.data;
+}
+
+export async function getNetWorth(): Promise<{
+  total_assets: number;
+  total_liabilities: number;
+  net_worth: number;
+  base_currency: string;
+}> {
+  const res = await api.get("/accounts/net-worth");
+  return res.data;
+}