Treat exchange as LIVE SoT: expiry closes perp only, no invented option settles.

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

backend/app/sim/matcher.py

@@ -1928,6 +1928,14 @@ class Matcher:
                 booked["forced"] = force
             return booked
 
+        # LIVE：禁止用本地内在价值发明结算；等交易所空仓后再镜像
+        if not get_settings().is_sim:
+            logger.warning(
+                "residual settle skip %s: LIVE exchange not flat, no local invent",
+                group_id,
+            )
+            return None
+
         sess = get_session()
         snap = sess.snapshot()
         spot = self._close_spot_px(snap)