feat(产品管理): 当前人时间着色与任务全景一致

- 当前人时间按滞留时长着色：<1h 绿 / ≥1h 橙 / ≥24h 红
- 与任务全景「当前人滞留」列的配色逻辑统一

frontend/src/pages/admin/AdminProductsPage.tsx

@@ -240,7 +240,16 @@ export default function AdminProductsPage() {
                             <InfoRow icon={Hash} label="规格型号" value={p.spec_model || "—"} />
                             <InfoRow icon={Tag} label="订单编号" value={p.order_no || "—"} />
                             <InfoRow icon={MapPin} label="当前位置" value={p.current_location_name || p.current_location_id || "—"} />
-                            <InfoRow icon={Timer} label="当前人时间" value={formatDuration(p.active_duration_hours)} />
+                            <div className="flex items-center gap-2 text-xs">
+                              <Timer className="h-3 w-3 shrink-0 text-gray-400" />
+                              <span className="shrink-0 text-gray-400">当前人时间</span>
+                              {(() => {
+                                const h = p.active_duration_hours;
+                                if (h == null) return <span className="truncate font-medium text-gray-700">—</span>;
+                                const cls = h >= 24 ? "bg-red-50 text-red-600" : h >= 1 ? "bg-orange-50 text-orange-600" : "bg-emerald-50 text-emerald-600";
+                                return <span className={`rounded-md px-1.5 py-0.5 font-bold ${cls}`}>{formatDuration(h)}</span>;
+                              })()}
+                            </div>
                             <InfoRow icon={CalendarDays} label="生产总天数" value={formatProductionDays(p.created_at)} />
                             <InfoRow icon={Clock} label="创建时间" value={new Date(p.created_at).toLocaleDateString("zh-CN")} />
                           </div>