Mark entry/exit on review charts; clarify bars are saved then read.

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

app/routes.py

@@ -928,12 +928,19 @@ def register_routes(app: Flask) -> None:
                 flash("记录不存在或无权查看", "error")
                 return redirect(url_for("records_page"))
             _annotate_trade_times(trade)
-            center = trade.get("open_time") or trade.get("created_at") or database.now()
-            window = 3600 * 6
+            # 以开仓～平仓为中心取窗口，保证入场/出场都在图内
+            open_ts = float(
+                trade.get("open_time") or trade.get("created_at") or database.now()
+            )
+            close_raw = trade.get("close_time")
+            close_ts = float(close_raw) if close_raw not in (None, "") else open_ts
+            pad = 3600 * 3
+            start_ts = min(open_ts, close_ts) - pad
+            end_ts = max(open_ts, close_ts) + pad
             charts = {}
             for tf in ("M1", "M5", "M15", "H1"):
                 charts[tf] = database.get_bars(
-                    conn, trade["symbol"], tf, float(center) - window, float(center) + window
+                    conn, trade["symbol"], tf, start_ts, end_ts
                 )
         return render_template(
             "record_detail.html",