前端: 仪表盘最近请求 canceled 显示灰色

- 控制台/管理后台仪表盘「最近请求」的 canceled 状态改为 neutral 灰色
- 与用量页保持一致的三态判断（success=ok / canceled=neutral / err）

Co-Authored-By: Claude <noreply@anthropic.com>

web/src/views/admin/OverviewView.vue

@@ -92,7 +92,7 @@ onMounted(load)
             </div>
             <div class="flex items-center gap-2">
               <span class="mono-num text-xs text-muted">{{ fmtCost(l.cost) }}</span>
-              <Badge :variant="l.status === 'success' ? 'ok' : 'err'">{{ l.status }}</Badge>
+              <Badge :variant="l.status === 'success' ? 'ok' : l.status === 'canceled' ? 'neutral' : 'err'">{{ l.status }}</Badge>
             </div>
           </li>
           <li v-if="logs.length === 0" class="py-6 text-center text-xs text-muted">暂无请求</li>

web/src/views/console/DashboardView.vue

@@ -110,7 +110,7 @@ onMounted(load)
             <div class="flex items-center gap-2">
               <span class="mono-num text-xs text-muted">{{ l.input_tokens }}/{{ l.output_tokens }}</span>
               <span class="mono-num w-16 text-right text-xs text-muted">{{ fmtCost(l.cost) }}</span>
-              <Badge :variant="l.status === 'success' ? 'ok' : 'err'">{{ l.status }}</Badge>
+              <Badge :variant="l.status === 'success' ? 'ok' : l.status === 'canceled' ? 'neutral' : 'err'">{{ l.status }}</Badge>
             </div>
           </li>
           <li v-if="logs.length === 0" class="py-6 text-center text-xs text-muted">