fix(s8): bucket unlinked objects in dashboard

server/Plugins/Admin.NET.Plugin.AiDOP/Service/S8/S8DashboardService.cs

@@ -7,6 +7,15 @@ namespace Admin.NET.Plugin.AiDOP.Service.S8;
 
 public class S8DashboardService : ITransient
 {
+    // S8-DASHBOARD-BYOBJECT-NULL-BUCKET-1：byObject / dim-trends(object) 维度统一 NULL 归桶口径。
+    // related_object_code 为 NULL/空白 → 归入"未关联"，避免主图空数据误导。
+    private const string UnlinkedObjectLabel = "未关联";
+
+    private static string NormalizeRelatedObjectCode(string? relatedObjectCode) =>
+        string.IsNullOrWhiteSpace(relatedObjectCode)
+            ? UnlinkedObjectLabel
+            : relatedObjectCode!.Trim();
+
     private readonly SqlSugarRepository<AdoS8Exception> _rep;
     private readonly SqlSugarRepository<AdoS0DepartmentMaster> _deptRep;
     private readonly SqlSugarRepository<AdoS8ProcessNode> _processNodeRep;
@@ -142,8 +151,9 @@ public class S8DashboardService : ITransient
                     count = g.Count(),
                 }),
             byObject = list
-                .Where(x => x.RelatedObjectCode != null)
-                .GroupBy(x => x.RelatedObjectCode!)
+                // S8-DASHBOARD-BYOBJECT-NULL-BUCKET-1：不再过滤 NULL，与 dim-trends 口径统一；
+                // related_object_code 为空时归入"未关联"桶。
+                .GroupBy(x => NormalizeRelatedObjectCode(x.RelatedObjectCode))
                 .OrderByDescending(g => g.Count())
                 .Take(20)
                 .Select(g => new { key = g.Key, count = g.Count() }),
@@ -210,12 +220,14 @@ public class S8DashboardService : ITransient
         var dateLabels = dates.Select(d => d.ToString("yyyy-MM-dd")).ToList();
 
         // 按维度取 key 函数
+        // S8-DASHBOARD-BYOBJECT-NULL-BUCKET-1：object 维度 NULL/空白统一归入"未关联"，与 byObject 口径一致；
+        // process 维度沿用历史"未设置"，本次不扩大。
         Func<dynamic, string> keySelector = dim switch
         {
             "process"  => r => r.ProcessNodeCode ?? "未设置",
             "occDept"  => r => r.OccurrenceDeptId.ToString(),
             "respDept" => r => r.ResponsibleDeptId.ToString(),
-            _          => r => r.RelatedObjectCode ?? "未设置",   // object
+            _          => r => NormalizeRelatedObjectCode((string?)r.RelatedObjectCode),   // object
         };
 
         var grouped = rows