Reconstruct TopstepX MLL floors from the EOD balance curve

TopstepX never reports the Maximum Loss Limit, but it's deterministic:
floor = min(0, eodBalanceHigh − trailingDrawdown), locking at the $0
starting balance. The EOD curve rebuilds from daily P&L + fund events,
with off-book fee drift spread across days proportionally to reported
fees (validated against a platform-reported MLL to ~$0.10). Stored in
autoLiqThresholds — negative, or +$0.01 once locked — so dead detection,
dashboards, and the ruin model's startThreshold all use the real room.
Guards move from '> 0' to '!== 0'; 0 still means no floor. canTrade=false
accounts are skipped. daily_pnl gains a fees column for the weighting.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/page.tsx

@@ -24,7 +24,8 @@ function fmt(value: number) {
 
 /** Returns true when an account's balance has breached Tradovate's auto-liquidation floor. */
 function isAccountDead(account: AccountState): boolean {
-    return account.autoLiqThreshold > 0 && account.amount <= account.autoLiqThreshold;
+    // 0 = no floor; negative floors are reconstructed TopstepX MLLs.
+    return account.autoLiqThreshold !== 0 && account.amount <= account.autoLiqThreshold;
 }
 
 function SettingsIcon() {