单独期权增加全仓复利模式：可选上限开关，仅允许一仓

用期权户全部可用×缓冲开仓，默认不设上限；开启上限后按 env 封顶，全仓时禁止已有持仓再开。

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

lib/options/options_pricing_lib.py

@@ -264,6 +264,25 @@ def resolve_budget_full_usdc(trading_usdc: float, trade_budget_usdc: float) -> f
     return min(float(trading_usdc), float(trade_budget_usdc))
 
 
+def resolve_compound_full_usdc(
+    trading_usdc: float,
+    *,
+    cap_enabled: bool = False,
+    cap_usdc: float | None = None,
+) -> float:
+    """全仓复利:默认用期权交易户全部可用;上限开关开启时再封顶."""
+    bal = max(0.0, float(trading_usdc or 0))
+    if not cap_enabled:
+        return bal
+    try:
+        cap = float(cap_usdc) if cap_usdc is not None else 0.0
+    except (TypeError, ValueError):
+        cap = 0.0
+    if cap <= 0:
+        return bal
+    return min(bal, cap)
+
+
 def calc_order_size(
     *,
     quote_per_unit: float,