feat: PTY kubectl终端 + 侧边栏对齐修复 + 构建缓存清理

**kubectl WebShell 修复：**
- 引入 github.com/creack/pty 库实现真正的伪终端
- 替换 bash --noediting + TERM=dumb 方案为 PTY-backed bash
- 支持 xterm-256color、窗口自适应、readline 交互
- 修复键盘输入无响应问题

**侧边栏优化：**
- 独立菜单项高度从 py-1.5 改为 h-8，与父菜单对齐
- 独立菜单图标从 h-3 w-3 改为 h-3.5 w-3.5，统一 14px

**构建优化：**
- run.sh docker up 增加 docker image prune -f 清理悬空镜像
- 每次部署自动清理 builder cache + dangling images

**认证修复（历史）：**
- Token 存储：Zustand + localStorage 双写，http.ts 双源 fallback
- YamlViewer/DeploymentDetail token 来源统一为 Zustand store

frontend/src/components/kubernetes/DeploymentDetail.tsx

@@ -16,6 +16,7 @@ import {
 } from 'lucide-react';
 import { kubernetesApi } from '@/services/api';
 import { useToast } from '@/hooks/use-toast';
+import { useUserStore } from '@/store';
 
 interface DeploymentDetailProps {
   clusterCode: string;
@@ -69,10 +70,9 @@ export function DeploymentDetail({ clusterCode, namespace, deploymentName, onBac
       );
       setPods(depPods);
       
-      // Filter HPAs targeting this deployment
+      // Filter HPAs targeting this deployment (flattened data)
       const depHpas = allHpas.filter((h: any) => {
-        const ref = h.spec?.scaleTargetRef;
-        return ref?.name === deploymentName && h.metadata?.namespace === namespace;
+        return h.target_name === deploymentName && h.namespace === namespace;
       });
       setHpas(depHpas);
     } catch (e) {
@@ -134,9 +134,9 @@ export function DeploymentDetail({ clusterCode, namespace, deploymentName, onBac
 
   const handleHpaToggle = async (hpa: any) => {
     // Not direct toggle — delete HPA
-    if (!confirm(`确定删除 HPA "${hpa.metadata?.name}"？`)) return;
+    if (!confirm(`确定删除 HPA "${hpa.name}"？`)) return;
     try {
-      await kubernetesApi.deleteHPA(clusterCode, namespace, hpa.metadata?.name);
+      await kubernetesApi.deleteHPA(clusterCode, namespace, hpa.name);
       toast({ title: 'HPA 已删除' });
       loadData();
     } catch (e: any) {
@@ -406,7 +406,7 @@ export function DeploymentDetail({ clusterCode, namespace, deploymentName, onBac
                       onClick={async () => {
                         setLogs('');
                         // Stream mode
-                        const token = localStorage.getItem('token') || '';
+                        const token = useUserStore.getState().token || '';
                         const url = `${window.location.protocol}//${window.location.host}/api/v1/kubernetes/${clusterCode}/namespace/${namespace}/pods/${logPod}/logs?tail=${logTail}&stream=true`;
                         try {
                           const resp = await fetch(url, { headers: { Authorization: `Bearer ${token}` } });
@@ -471,18 +471,18 @@ export function DeploymentDetail({ clusterCode, namespace, deploymentName, onBac
                   </TableHeader>
                   <TableBody>
                     {hpas.map((hpa: any) => {
-                      const spec = hpa.spec || {};
-                      const status = hpa.status || {};
-                      const metrics = (spec.metrics || []).map((m: any) => {
-                        if (m.resource) return `${m.resource.name}: ${m.resource.target.averageUtilization}%`;
-                        return m.type;
-                      }).join(', ');
+                      const cpu = hpa.cpu_percent || 0;
+                      const mem = hpa.mem_percent || 0;
+                      const metricsParts = [];
+                      if (cpu) metricsParts.push(`CPU: ${cpu}%`);
+                      if (mem) metricsParts.push(`MEM: ${mem}%`);
+                      const metrics = metricsParts.join(', ') || '-';
                       return (
-                        <TableRow key={hpa.metadata?.name} className="border-slate-800 hover:bg-slate-800/30">
-                          <TableCell className="font-medium text-slate-200">{hpa.metadata?.name}</TableCell>
-                          <TableCell className="text-slate-300">{spec.minReplicas} / {spec.maxReplicas}</TableCell>
-                          <TableCell className="text-sm text-slate-400">{metrics || '-'}</TableCell>
-                          <TableCell className="text-slate-300">{status.currentReplicas || 0} / {status.desiredReplicas || 0}</TableCell>
+                        <TableRow key={hpa.name} className="border-slate-800 hover:bg-slate-800/30">
+                          <TableCell className="font-medium text-slate-200">{hpa.name}</TableCell>
+                          <TableCell className="text-slate-300">{hpa.min_replicas} / {hpa.max_replicas}</TableCell>
+                          <TableCell className="text-sm text-slate-400">{metrics}</TableCell>
+                          <TableCell className="text-slate-300">{hpa.current_replicas || 0}</TableCell>
                           <TableCell>
                             <Button variant="ghost" size="icon" className="h-7 w-7 text-red-400 hover:text-red-300"
                               onClick={() => handleHpaToggle(hpa)} title="删除 HPA">