fix: add SL sanity check on open_position; add entry_ts display in paper-v53 positions

backend/signal_engine.py

@@ -1088,6 +1088,15 @@ def paper_open_trade(
         tp1 = price - tp1_multiplier * atr
         tp2 = price - tp2_multiplier * atr
 
+    # SL 合理性校验：实际距离必须在 risk_distance 的 80%~120% 范围内
+    actual_sl_dist = abs(sl - price)
+    if actual_sl_dist < risk_distance * 0.8 or actual_sl_dist > risk_distance * 1.2:
+        logger.error(
+            f"[{symbol}] ⚠️ SL校验失败，拒绝开仓: direction={direction} price={price:.4f} "
+            f"sl={sl:.4f} actual_dist={actual_sl_dist:.4f} expected={risk_distance:.4f} atr={atr:.4f}"
+        )
+        return
+
     with get_sync_conn() as conn:
         with conn.cursor() as cur:
             cur.execute(

frontend/app/paper-v53/page.tsx

@@ -207,6 +207,9 @@ function ActivePositions() {
                 <span className="text-emerald-600">TP2: ${fmtPrice(p.tp2_price)}</span>
                 <span className="text-red-500">SL: ${fmtPrice(p.sl_price)}</span>
               </div>
+              <div className="mt-1 text-[9px] text-slate-400">
+                入场时间: {p.entry_ts ? new Date(p.entry_ts).toLocaleString("zh-CN", {hour12:false, month:"2-digit", day:"2-digit", hour:"2-digit", minute:"2-digit", second:"2-digit"} as any) : "-"}
+              </div>
             </div>
           );
         })}