Show fund transactions (W/D) on calendar, equity curve, and cash history table

- Persist fund transactions to SQLite (fund_transactions table) so they
  survive beyond Tradovate's 28-day report window
- Calendar: highlight W/D dates in amber with the amount shown below the day
- Equity curve: reduce running equity at withdrawal dates and show a vertical
  dashed amber line labelled W/D
- New Cash History table below calendar listing all trades and W/D events
  sorted newest-first

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

types.ts

@@ -36,6 +36,8 @@ export interface AccountState {
     dailyTarget: { amount: number; path: 'first_day' | 'normal_day' | 'reduced_day' } | null;
     /** FIFO daily P&L history — used by the equity curve and calendar. */
     dailyPnL: { date: string; pnl: number }[];
+    /** Fund transactions (deposits/withdrawals) — used by the calendar and equity curve. */
+    fundTransactions: { date: string; amount: number }[];
 }
 
 export interface FirmState {