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>

app/api/state/route.ts

@@ -56,6 +56,7 @@ export async function GET() {
                     targetHit,
                     dailyTarget,
                     dailyPnL,
+                    fundTransactions: client.fundTransactions[acc.id] ?? [],
                 };
             });
             return { firm: f.name, connected: true, accounts, perContractFees: client.perContractFees };