顺势加仓 v2：程序监控滚仓、文档页与平仓同步

重写滚仓计仓与四种加仓方式（市价/斐波/突破），程序盯 mark 触价成交；风险读监控单；pending 可删不可改；手动平仓同步结束滚仓。新增 /strategy/roll/docs 说明页与顺势加仓滚仓说明.md。

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

crypto_monitor_binance/app.py

@@ -8673,6 +8673,14 @@ def del_order(id):
                 now=app_now(),
             )
             conn.execute("UPDATE order_monitors SET status='stopped', exchange_close_order_id=? WHERE id=?", (close_order_id, id))
+            try:
+                _rcfg = app.extensions.get("strategy_roll_cfg")
+                if isinstance(_rcfg, dict):
+                    from strategy_register import roll_sync_after_external_close
+
+                    roll_sync_after_external_close(_rcfg, conn, row["symbol"], row["direction"])
+            except Exception:
+                pass
             clear_key_sizing_snapshot_if_flat(conn, session_date)
             conn.commit()
             conn.close()
@@ -8740,6 +8748,14 @@ def del_order(id):
                     now=app_now(),
                 )
                 conn.execute("UPDATE order_monitors SET status='stopped' WHERE id=?", (id,))
+                try:
+                    _rcfg = app.extensions.get("strategy_roll_cfg")
+                    if isinstance(_rcfg, dict):
+                        from strategy_register import roll_sync_after_external_close
+
+                        roll_sync_after_external_close(_rcfg, conn, row["symbol"], row["direction"])
+                except Exception:
+                    pass
                 conn.commit()
                 conn.close()
                 flash("该仓位在交易所已不存在，已按成交记录同步结束并记账")