修复币本位期权残档判定：内在价值按币报价(S-K)/S，避免与美元点差混比误杀有效买一

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

lib/options/options_pricing_lib.py

@@ -64,7 +64,46 @@ def _safe_px(v: Any) -> float | None:
     return x if x > 0 else None
 
 
-def intrinsic_px_per_unit(opt_type: str | None, strike: float | None, index_px: float | None) -> float | None:
+def _quote_in_coin_from_context(
+    *,
+    quote_in_coin: bool | None = None,
+    inst_id: str | None = None,
+    margin_mode: str | None = None,
+) -> bool:
+    """币本位(ETH-USD/BTC-USD)权利金按币报价;USDC(USD_UM)按美元点差."""
+    if quote_in_coin is not None:
+        return bool(quote_in_coin)
+    if inst_id:
+        try:
+            from lib.options.options_margin_mode_lib import MODE_COIN, margin_mode_from_inst_id
+
+            return margin_mode_from_inst_id(inst_id) == MODE_COIN
+        except Exception:
+            pass
+    if margin_mode is not None:
+        try:
+            from lib.options.options_margin_mode_lib import is_coin_margin_mode
+
+            return is_coin_margin_mode(margin_mode)
+        except Exception:
+            return str(margin_mode).strip().lower() in ("coin", "coin_margin", "crypto")
+    return False
+
+
+def intrinsic_px_per_unit(
+    opt_type: str | None,
+    strike: float | None,
+    index_px: float | None,
+    *,
+    quote_in_coin: bool | None = None,
+    inst_id: str | None = None,
+    margin_mode: str | None = None,
+) -> float | None:
+    """
+    与盘口同单位的内在价值(每 1 标的).
+    - USDC / USD_UM: 美元点差 max(0, S−K) / max(0, K−S)
+    - 币本位 ETH-USD / BTC-USD: 币报价 max(0, S−K)/S / max(0, K−S)/S
+    """
     o = (opt_type or "").strip().upper()
     if strike is None or index_px is None:
         return None
@@ -74,10 +113,18 @@ def intrinsic_px_per_unit(opt_type: str | None, strike: float | None, index_px:
     except (TypeError, ValueError):
         return None
     if o == "C" and idx > k:
-        return idx - k
-    if o == "P" and idx < k:
-        return k - idx
-    return None
+        points = idx - k
+    elif o == "P" and idx < k:
+        points = k - idx
+    else:
+        return None
+    if _quote_in_coin_from_context(
+        quote_in_coin=quote_in_coin, inst_id=inst_id, margin_mode=margin_mode
+    ):
+        if idx <= 0:
+            return None
+        return points / idx
+    return points
 
 
 def is_stub_bid_px(
@@ -128,9 +175,19 @@ def close_ref_prices(
     opt_type: str | None = None,
     strike: float | None = None,
     index_px: float | None = None,
+    quote_in_coin: bool | None = None,
+    inst_id: str | None = None,
+    margin_mode: str | None = None,
 ) -> tuple[float | None, float | None]:
-    """返回 (mark_px, intrinsic_px) 供残档判断."""
-    return _safe_px(mark_px), intrinsic_px_per_unit(opt_type, strike, index_px)
+    """返回 (mark_px, intrinsic_px) 供残档判断;intrinsic 与盘口同单位."""
+    return _safe_px(mark_px), intrinsic_px_per_unit(
+        opt_type,
+        strike,
+        index_px,
+        quote_in_coin=quote_in_coin,
+        inst_id=inst_id,
+        margin_mode=margin_mode,
+    )
 
 
 def filter_bids_for_close(