修复 BTC 币本位期权净盈亏被 round4 抹成 0 的精度问题。

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

lib/options/options_profit_exit_lib.py

@@ -59,11 +59,13 @@ def profit_exit_hit(
 
 
 def required_recycle_usdc(premium_paid: float, mult: float) -> float | None:
+    from lib.options.options_pricing_lib import PREMIUM_DECIMALS_COIN, round_premium_amount
+
     prem = float(premium_paid or 0)
     m = float(mult or 0)
     if prem <= 0 or m <= 0:
         return None
-    return round(prem * (1.0 + m), 4)
+    return round_premium_amount(prem * (1.0 + m), decimals=PREMIUM_DECIMALS_COIN)
 
 
 def set_profit_exit(