Deduct round-trip taker fees from estimated perp PnL.

Unify hub/instance TP profit, calc_pnl, and push/accounting to net of 0.05% per side; leave exchange floating PnL unchanged.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/hub/hub_calculator_lib.py

@@ -315,10 +315,18 @@ def _roll_leg_preview(
     cs = float(contract_size) if contract_size else 1.0
     if direction == "long":
         loss_at_sl = (new_avg - sl) * new_qty * cs
-        reward_at_tp = (tp - new_avg) * new_qty * cs
+        reward_gross = (tp - new_avg) * new_qty * cs
     else:
         loss_at_sl = (sl - new_avg) * new_qty * cs
-        reward_at_tp = (new_avg - tp) * new_qty * cs
+        reward_gross = (new_avg - tp) * new_qty * cs
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        reward_at_tp = net_pnl_after_fee(reward_gross, new_avg, tp, new_qty, cs)
+        if reward_at_tp is None:
+            reward_at_tp = reward_gross
+    except Exception:
+        reward_at_tp = reward_gross
     return {
         "add_amount_raw": q2,
         "qty_after": new_qty,
@@ -412,10 +420,18 @@ def calc_roll_calculator(
 
     if direction == "long":
         first_loss = (avg - initial_sl) * qty_f * cs
-        first_profit = (tp - avg) * qty_f * cs
+        first_profit_gross = (tp - avg) * qty_f * cs
     else:
         first_loss = (initial_sl - avg) * qty_f * cs
-        first_profit = (avg - tp) * qty_f * cs
+        first_profit_gross = (avg - tp) * qty_f * cs
+    try:
+        from lib.trade.trade_fee_lib import net_pnl_after_fee
+
+        first_profit = net_pnl_after_fee(first_profit_gross, avg, tp, qty_f, cs)
+        if first_profit is None:
+            first_profit = first_profit_gross
+    except Exception:
+        first_profit = first_profit_gross
 
     rows.append(
         {