refactor(i18n): U43 深度残余硬编码中文 UI 文本清零 — 17 文件 ~40 处→0

趋势标签(上升/下降/平稳) + K8s 卡片标题(Pod级别/安全上下文/实例/详情) + data-table 默认值(搜索/暂无数据) + Deployment 编辑器标签(数据卷/挂载/只读写/manifest提示/镜像拉取凭证) + HostSettings 4 个命名空间描述 + 7 个 K8s 页面刷新按钮 + 资源编辑器新建/编辑 + Agent 执行命令描述 + 账单保存成功 toast + 容量预警标题

新增 common 30 语义化翻译键, zh/en 7898→7928 对齐
tsc -b=0, npm build✓ (16.55s), ESLint=0/43/any=0, go build=0, 17/17 测试通过

frontend/src/locales/en-US.json

@@ -636,7 +636,33 @@
     "last1Hour": "Last 1 hour",
     "currentHost": "Current host: {{host}}",
     "minutes30": "30 min",
-    "hours2": "2 hours"
+    "hours2": "2 hours",
+    "trendUp": "Up",
+    "trendDown": "Down",
+    "trendStable": "Stable",
+    "executeOn": "Execute command on {{host}}",
+    "podLevel": "Pod Level",
+    "podSecurityContext": "Pod Security Context",
+    "hostNetworkDesc": "hostNetwork (share host network namespace)",
+    "hostIPCDesk": "hostIPC (share host IPC namespace)",
+    "hostPIDDesk": "hostPID (share host PID namespace)",
+    "shareProcessNamespaceDesc": "shareProcessNamespace (share process namespace)",
+    "podInstances": "Pod Instances ({{count}})",
+    "podDetail": "Pod Details",
+    "metricTrend": "Metric Trends",
+    "portDiscovery": "Port Discovery ({{count}})",
+    "remoteCommand": "Remote Command",
+    "searchPlaceholder": "Search...",
+    "imagePullSecrets": "Image Pull Secrets",
+    "noManifestHint": "No manifest data available. Please use YAML edit mode to modify directly.",
+    "volumeDefinition": "Volumes",
+    "noVolumeHint": "No volumes configured. Click \"Add Volume\" to start.",
+    "mountToContainers": "Mount volumes to containers",
+    "readOnly": "Read Only",
+    "readWrite": "Read Write",
+    "manageAll": "Manage All",
+    "createNew": "Create New",
+    "saveSuccess": "Saved successfully"
   },
   "menu": {
     "aiAgentCli": "Agent CLI",
@@ -3713,7 +3739,8 @@
     "kubectlTerminalDesc": "Kubernetes cluster command-line terminal",
     "podLevel": "Pod Level",
     "podNameLabel": "Pod Name",
-    "podManagePolicy": "Pod Management Policy"
+    "podManagePolicy": "Pod Management Policy",
+    "uploadFile": "Upload"
   },
   "monitor": {
     "acknowledge": "Acknowledge",
@@ -8021,7 +8048,10 @@
       "expectedToReach": "Expected to",
       "days": "days",
       "afterReachThreshold": "until threshold reached",
-      "aiSuggestion": "AI Suggestion"
+      "aiSuggestion": "AI Suggestion",
+      "warningTitle": "Capacity Planning Alerts",
+      "currentThreshold": "Current {{current}} / Threshold {{threshold}}",
+      "predictedLabel": ", Predicted {{predicted}}"
     },
     "capacityPlanPrompt": "Based on the following host resource usage, provide cost optimization and capacity planning advice (identify idle/overloaded hosts; suggest scale-down/scale-up)",
     "capacityPlanning": "Capacity Planning",