✨ feat(*): 添加轨迹产物导出与规划速度倍率隔离

* 新增 FlyshotTrajectoryArtifactWriter，支持 saveTrajectory
  将规划结果导出到 Config/Data/name（JointTraj、CartTraj、
  ShotEvents 等）
* RobotConfig 新增 PlanningSpeedScale，区分规划阶段限速倍率
  与运行时 J519 下发倍率
* 轨迹缓存键纳入 planningSpeedScale，避免降速规划误用缓存
* 完善 FanucCommandClient 命令参数日志与状态通道重连
* 补充 RuntimeOrchestrationTests 覆盖产物导出与倍率隔离
* 更新 README 进度文档

src/Flyshot.Core.Triggering/ShotTimelineBuilder.cs

@@ -1,5 +1,6 @@
 using Flyshot.Core.Domain;
 using Flyshot.Core.Planning;
+using Microsoft.Extensions.Logging;
 
 namespace Flyshot.Core.Triggering;
 
@@ -10,13 +11,17 @@ namespace Flyshot.Core.Triggering;
 public sealed class ShotTimelineBuilder
 {
     private readonly WaypointTimestampResolver _resolver;
+    private readonly ILogger<ShotTimelineBuilder>? _logger;
 
     /// <summary>
     /// 初始化 ShotTimelineBuilder，依赖一个时间戳解析器来对齐补中点后的轨迹与原始示教点。
     /// </summary>
-    public ShotTimelineBuilder(WaypointTimestampResolver resolver)
+    /// <param name="resolver">时间戳解析器。</param>
+    /// <param name="logger">日志记录器；允许 null。</param>
+    public ShotTimelineBuilder(WaypointTimestampResolver resolver, ILogger<ShotTimelineBuilder>? logger = null)
     {
         _resolver = resolver ?? throw new ArgumentNullException(nameof(resolver));
+        _logger = logger;
     }
 
     /// <summary>
@@ -82,6 +87,13 @@ public sealed class ShotTimelineBuilder
             }
         }
 
+        _logger?.LogInformation(
+            "ShotTimeline 构建完成: shotFlags总数={ShotFlagCount}, 触发事件数={TriggerCount}, useDo={UseDo}, holdCycles={HoldCycles}",
+            program.ShotFlags.Count(static f => f),
+            triggerTimeline.Count,
+            useDo,
+            holdCycles);
+
         return new ShotTimeline(shotEvents, triggerTimeline);
     }
 }