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>

lib/reporter.ts

@@ -73,7 +73,8 @@ function collectFirmStats() {
         for (const acc of client.accountList) {
             const cash = client.accountCashBalances[acc.id] ?? { amount: 0, realizedPnL: 0 };
             const autoLiqThreshold = client.autoLiqThresholds[acc.id] ?? 0;
-            const isDead = autoLiqThreshold > 0 && cash.amount <= autoLiqThreshold;
+            // 0 = no floor; negative floors are reconstructed TopstepX MLLs.
+            const isDead = autoLiqThreshold !== 0 && cash.amount <= autoLiqThreshold;
             if (isDead) continue;
 
             const cfg = getAccountConfig(acc.id).accountType;
@@ -155,7 +156,7 @@ function collectFirmStats() {
                             startHigh: highWater,
                             // Tradovate reports the account's REAL liquidation
                             // floor — anchor the trail there for exact room.
-                            startThreshold: autoLiqThreshold > 0
+                            startThreshold: autoLiqThreshold !== 0
                                 ? r2(autoLiqThreshold - cfg.accountSize)
                                 : undefined,
                         },