修复 OKX 期权翻倍出场与币本位浮盈：中控/看板按指数折 U，避免 BTC 币数量当美金。

翻倍出场按全仓买一判定且对冲表异常不再整段跳过；面板按当前倍数展示需回收公式。

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

tests/test_hub_options_funds_lib.py

@@ -79,12 +79,52 @@ class HubOptionsFundsLibTests(TestCase):
                     "premium_ccy": "ETH",
                     "upl": 0.0016,
                     "idx_px": 2280.0,
+                    "close_preview": {"bid_invalid": True},
                 }
             ],
         }
         out = options_float_pnl_usdt(snap)
         self.assertAlmostEqual(out, round(0.0016 * 2280.0, 4), places=4)
 
+    def test_options_float_pnl_usdt_btc_coin_times_btc_index(self):
+        from lib.hub.hub_options_funds_lib import options_float_pnl_usdt
+
+        snap = {
+            "ok": True,
+            "enabled": True,
+            "options_margin_mode": "coin",
+            # 默认指数若误用 ETH 也不应覆盖逐仓 BTC idx
+            "options_index_px": 3000.0,
+            "upl_total_usdc": -100.0,
+            "positions": [
+                {
+                    "inst_id": "BTC-USD-260327-100000-P",
+                    "margin_mode": "coin",
+                    "premium_ccy": "BTC",
+                    "upl": -0.001,
+                    "idx_px": 100000.0,
+                    "close_preview": {"bid_invalid": True},
+                }
+            ],
+        }
+        out = options_float_pnl_usdt(snap)
+        self.assertAlmostEqual(out, -100.0, places=4)
+
+    def test_options_float_pnl_usdt_fallback_already_usdt_no_double_fx(self):
+        """实例 hub 合计已折 U 时,回退不可再 × 指数."""
+        from lib.hub.hub_options_funds_lib import options_float_pnl_usdt
+
+        snap = {
+            "ok": True,
+            "enabled": True,
+            "options_margin_mode": "coin",
+            "options_index_px": 100000.0,
+            "upl_total_usdc": -100.0,
+            "positions": [],
+        }
+        out = options_float_pnl_usdt(snap)
+        self.assertAlmostEqual(out, -100.0, places=4)
+
     def test_repair_double_counted_fund_entry(self):
         raw = {
             "funding_usdt": 586.82,