feat(flow-debugger): carry site-side trace truncation on the route reply (ScadaBridge#54)

ScriptCallResult and RouteToCallResponse gain trailing Truncated/LogsTruncated,
filled from the site FlowTraceCollector after Complete(); RouteToCallResponseDto
fields 8/9 carry them (sitecommand regen). FlowDebugRunner ORs them into
FlowDebugRunResult on the script entry, and on the method entry through a new
optional truncation sink on RouteHelper.WithTraceSink (carried through every
With* clone). Previously a site run whose collector dropped rows came back as a
silently short list. Older sites send false.

Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV

src/ZB.MOM.WW.ScadaBridge.Communication/Grpc/SiteCommandDtoMapper.cs

@@ -2649,7 +2649,10 @@ public static class SiteCommandDtoMapper
             ErrorMessage = OrEmpty(response.ErrorMessage),
             Timestamp = Ts(response.Timestamp),
             // Flow Debugger (design 2026-09-05 §5.4): additive fields 6/7.
-            ChildExecutionId = GuidToWire(response.ChildExecutionId)
+            ChildExecutionId = GuidToWire(response.ChildExecutionId),
+            // Gitea #54: additive fields 8/9 — the site collector's truncation flags.
+            Truncated = response.Truncated,
+            LogsTruncated = response.LogsTruncated
         };
         if (response.TraceEvents is { Count: > 0 } traceEvents)
         {
@@ -2677,7 +2680,9 @@ public static class SiteCommandDtoMapper
             GuidFromWire(dto.ChildExecutionId),
             // An untraced run — or an older site that never sets the field — sends no
             // events, which maps to null so the UI can label the lane "site not traced".
-            dto.TraceEvents.Count == 0 ? null : dto.TraceEvents.Select(AuditEventDtoMapper.FromDto).ToList());
+            dto.TraceEvents.Count == 0 ? null : dto.TraceEvents.Select(AuditEventDtoMapper.FromDto).ToList(),
+            dto.Truncated,
+            dto.LogsTruncated);
     }
 
     /// <summary>Projects a <see cref="RouteToGetAttributesResponse"/> onto the wire.</summary>