修复 BTC 币本位期权净盈亏被 round4 抹成 0 的精度问题。

币本位权利金/回收/盈亏改用 8 位小数，避免小额 BTC 报价显示为 0。

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

lib/options/options_close_exec_lib.py

@@ -11,9 +11,11 @@ from lib.options.options_close_gate_lib import (
     update_close_gate,
 )
 from lib.options.options_pricing_lib import (
+    PREMIUM_DECIMALS_COIN,
     estimate_close_by_bids,
     fetch_option_mark_px,
     is_stub_bid_px,
+    round_premium_amount,
     total_premium,
 )
 
@@ -307,7 +309,9 @@ def close_option_by_bid1(
     px = float(order.get("px", locked_bid_px))
     oid = str((order.get("data") or {}).get("ordId") or "")
     # 本批预估收回(按挂单张数);成交后按实际减仓张数重算并入累计
-    prem_recv_submit = round(total_premium(px, level_sheets * ct_mult), 4)
+    prem_recv_submit = round_premium_amount(
+        total_premium(px, level_sheets * ct_mult), decimals=PREMIUM_DECIMALS_COIN
+    )
     time.sleep(0.6)
     invalidate_option_positions_cache()
     raw2 = cfg["fetch_option_positions"](ex)
@@ -331,7 +335,9 @@ def close_option_by_bid1(
     if fully_closed and filled_sheets < 1:
         filled_sheets = level_sheets
     batch_recv = (
-        round(total_premium(px, filled_sheets * ct_mult), 4) if filled_sheets > 0 else 0.0
+        round_premium_amount(total_premium(px, filled_sheets * ct_mult), decimals=PREMIUM_DECIMALS_COIN)
+        if filled_sheets > 0
+        else 0.0
     )
 
     total_recv = batch_recv
@@ -360,7 +366,9 @@ def close_option_by_bid1(
                     ord_id=oid or None,
                 )
             accum = get_open_close_accum(conn, inst_id)
-            total_recv = round(float(accum.get("recv") or 0), 4)
+            total_recv = round_premium_amount(
+                float(accum.get("recv") or 0), decimals=PREMIUM_DECIMALS_COIN
+            ) or 0.0
             accum_sheets = int(accum.get("sheets") or 0)
             accum_notional = float(accum.get("notional") or 0)
             if accum_sheets > 0 and accum_notional > 0:
@@ -380,14 +388,20 @@ def close_option_by_bid1(
             for i, row in enumerate(open_rows):
                 paid = float(row["premium_paid"] or 0)
                 if i == len(open_rows) - 1:
-                    recv = round(total_recv - allocated, 4)
+                    recv = round_premium_amount(
+                        total_recv - allocated, decimals=PREMIUM_DECIMALS_COIN
+                    ) or 0.0
                 elif total_paid > 0:
-                    recv = round(total_recv * (paid / total_paid), 4)
+                    recv = round_premium_amount(
+                        total_recv * (paid / total_paid), decimals=PREMIUM_DECIMALS_COIN
+                    ) or 0.0
                     allocated += recv
                 else:
-                    recv = round(total_recv / len(open_rows), 4)
+                    recv = round_premium_amount(
+                        total_recv / len(open_rows), decimals=PREMIUM_DECIMALS_COIN
+                    ) or 0.0
                     allocated += recv
-                pnl = round(recv - paid, 4)
+                pnl = round_premium_amount(recv - paid, decimals=PREMIUM_DECIMALS_COIN) or 0.0
                 note_sql = ""
                 from lib.options.options_time_lib import options_app_now_str