Add full Next.js autotrader app with SQLite persistence and live Tradovate data

- SQLite DB (better-sqlite3) with firms, account_configs, firm_fees, instruments tables
- REST API routes: firms CRUD, account configs CRUD, state, accounts, instruments
- Live Tradovate WebSocket client: login, sync, positions, auto-liq thresholds
- Dashboard (app/page.tsx): per-firm account list with balance, day P&L, days traded,
  target progress, and Dead/Inactive/Flat status based on Tradovate auto-liq floors
- Account detail page: objectives progress, daily P&L chart, consistency tracking
- Per-firm settings page: account configs and instrument fee management
- Dead detection uses trailingMaxDrawdownLimit - trailingMaxDrawdown from
  userAccountAutoLiqs; filters Tradovate sentinel value (999999999 = no limit)
- FIFO P&L engine with commission accounting for daily P&L history
- Removed manual maxLoss fallback in favour of live Tradovate auto-liq data

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

types.ts

@@ -4,6 +4,8 @@ export interface AccountConfig {
     consistency: number;
     minDayPnL: number;
     minTradingDays: number;
+    accountSize: number;
+    maxLoss: number;  // 0 = no limit; positive = account is "Dead" when loss exceeds this
 }
 
 export interface FirmConfig {
@@ -22,6 +24,8 @@ export interface AccountState {
     realizedPnL: number;
     daysTraded: number;
     hasPosition: boolean;
+    /** Balance floor from Tradovate's auto-liquidation profile (0 = not set) */
+    autoLiqThreshold: number;
 }
 
 export interface FirmState {