style: 网页端操作日志条铺满卡片宽度并加可点击箭头

- 负 margin 精确抵消 padding+border,蓝条真正贯穿卡片宽度
- 日志文字加粗 + 末尾蓝色 › 箭头提示可点击

frontend/src/components/TaskTree/TaskFlowView.tsx

@@ -150,13 +150,13 @@ const SlimCard = memo(function SlimCard({
           <button onClick={() => onAction({ task, action: "transfer" })} className={`flex-1 rounded border border-orange-200 bg-orange-50 ${sz.btn} text-orange-600`}>强制转交</button>
         </div>
       )}
-      {/* 操作日志：全行蓝色横条，整条可点击 */}
+      {/* 操作日志：全行蓝色横条，铺满卡片宽度（含 padding+border），整条可点击 */}
       {task.records && task.records.length > 0 && (
         <div
           onClick={(e) => { e.stopPropagation(); onViewRecords?.(task); }}
-          className={`${size === "lg" ? "-mx-4 -mb-4" : "-mx-2.5 -mb-2.5"} mt-3 py-1.5 w-full bg-blue-50 text-blue-600 text-center text-sm cursor-pointer hover:bg-blue-100 border-t border-blue-100 rounded-b-md transition-colors`}
+          className={`${size === "lg" ? "-mx-[17px] -mb-[17px]" : "-mx-[11px] -mb-[11px]"} mt-3 py-1.5 bg-blue-50 text-blue-600 text-center text-sm font-medium cursor-pointer transition-colors hover:bg-blue-100 border-t border-blue-100 rounded-b-lg`}
         >
-          查看操作日志 ({task.records.length}条)
+          查看操作日志 ({task.records.length}条) <span className="font-bold text-blue-700">›</span>
         </div>
       )}
     </div>