diff --git a/apps/web/src/viewport/VirtualLineReplay.tsx b/apps/web/src/viewport/VirtualLineReplay.tsx
index 1a44b7a..13d30d8 100644
--- a/apps/web/src/viewport/VirtualLineReplay.tsx
+++ b/apps/web/src/viewport/VirtualLineReplay.tsx
@@ -5,6 +5,8 @@ import './VirtualLineReplay.css';
 const COLORS = ['#2563eb', '#f59e0b', '#0ea5e9', '#8b5cf6', '#ef4444', '#10b981', '#ec4899'];
 const DEFAULT_OPERATION_ORDER = ['激光下料', '下料', '折弯', '焊接', '喷涂', '组装', '装配'];
 const TARGET_REPLAY_MS = 45_000;
+const MAX_REPLAY_LOG_ROWS = 8;   // 推演日志面板最多展示条数，更早的由滚动承接
+const MAX_ORDER_LANES = 8;      // 订单泳道最多展示条数，避免窄屏溢出
 
 type ReplayStatus = 'loading' | 'running' | 'warning' | 'passed' | 'blocked';
 
@@ -187,7 +189,7 @@ export default function VirtualLineReplay({ data }: { data: FlexGanttData }) {
         kind: late || risk ? 'risk' : 'finish',
       });
     }
-    return rows.filter(row => row.time <= virtualTime).sort((a, b) => b.time - a.time).slice(0, 8);
+    return rows.filter(row => row.time <= virtualTime).sort((a, b) => b.time - a.time).slice(0, MAX_REPLAY_LOG_ROWS);
   }, [virtualTime, workOrders]);
 
   const orderPosition = (order: OrderTrack) => {
@@ -283,7 +285,7 @@ export default function VirtualLineReplay({ data }: { data: FlexGanttData }) {
           )}
           <div className="vlr-order-lanes">
             <span className="vlr-entry">订单入口</span>
-            {orders.slice(0, 8).map(order => {
+            {orders.slice(0, MAX_ORDER_LANES).map(order => {
               const pos = orderPosition(order);
               const left = stations.length <= 1 ? 50 : ((pos.stationIndex + 0.5) / stations.length) * 100;
               const risk = pos.focus.conflict || pos.focus.overdue;
diff --git a/server/aps_domain/flex.py b/server/aps_domain/flex.py
index 7a37c01..1d40508 100644
--- a/server/aps_domain/flex.py
+++ b/server/aps_domain/flex.py
@@ -230,6 +230,9 @@ def flex_gantt_view(world: World) -> dict:
     }
 
 
+MAX_BLOCKED_ORDER_REASONS = 8  # 单张阻断订单展示的缺料原因行数上限，超出由冲突中心承接
+
+
 def _blocked_orders_view(world: World, wos_out: list[dict], orders_by_no: dict,
                          products: dict, latest_id) -> list[dict]:
     """阻断订单投影：本版本有冲突但没有任何工单的订单（如缺料急单）。
@@ -264,7 +267,7 @@ def _blocked_orders_view(world: World, wos_out: list[dict], orders_by_no: dict,
             "priority": o.get("priority"),
             "isRush": bool(o.get("isRush")),
             "severity": severity_by_order.get(ono) or "",
-            "reasons": reasons[:8],
+            "reasons": reasons[:MAX_BLOCKED_ORDER_REASONS],
         })
     blocked.sort(key=lambda b: (b.get("dueDate") or "", b["orderNo"]))
     return blocked
diff --git a/server/aps_domain/orders.py b/server/aps_domain/orders.py
index fa83188..dc0ecf2 100644
--- a/server/aps_domain/orders.py
+++ b/server/aps_domain/orders.py
@@ -713,7 +713,7 @@ def apply_order_action(world: World, next_id, action: str, payload: dict[str, An
         product = _product(world, p["productId"])
         order_no = p.get("orderNo") or ""
         if order_no:
-            # 计划员指定单号（如急单 RUSH-0007）：保留并查重，失败即拒绝
+            # 计划员指定单号：保留原号并全池查重，冲突即拒绝
             folded = order_no.casefold()
             clash = any(
                 str(o.get("orderNo") or "").casefold() == folded