refactor(frontend): 清理ops组件中未使用的i18n翻译

- 移除i18n文件中未使用的翻译键（cpu, redis, qps, ttft等）
- 将技术术语改为硬编码（QPS, CPU, TPS等不需要翻译）
- 简化OpsDashboardHeader、OpsErrorDetailModal等组件的i18n调用

frontend/src/i18n/locales/en.ts

@@ -1858,10 +1858,8 @@ export default {
       noSystemMetrics: 'No system metrics collected yet.',
       collectedAt: 'Collected at:',
       window: 'window',
-      cpu: 'CPU',
       memory: 'Memory',
       db: 'DB',
-      redis: 'Redis',
       goroutines: 'Goroutines',
       jobs: 'Jobs',
       jobsHelp: 'Click “Details” to view job heartbeats and recent errors',
@@ -1907,7 +1905,6 @@ export default {
       p99: 'p99:',
       avg: 'avg:',
       max: 'max:',
-      qps: 'QPS',
       requests: 'Requests',
       requestsTitle: 'Requests',
       upstream: 'Upstream',
@@ -2061,7 +2058,6 @@ export default {
         },
         total: 'Total:',
         searchPlaceholder: 'Search request_id / client_request_id / message',
-        accountIdPlaceholder: 'account_id'
       },
       // Error Detail Modal
       errorDetail: {
@@ -2096,7 +2092,6 @@ export default {
           requestId: 'Request ID'
         },
         retryMeta: {
-          http: 'HTTP',
           used: 'Used',
           success: 'Success',
           pinned: 'Pinned'
@@ -2113,7 +2108,6 @@ export default {
         group: 'Group',
         account: 'Account',
         latency: 'Request Duration',
-        ttft: 'TTFT',
         businessLimited: 'Business Limited',
         requestPath: 'Request Path',
         timings: 'Timings',
@@ -2134,7 +2128,6 @@ export default {
         confirmRetry: 'Confirm Retry',
         retrySuccess: 'Retry succeeded',
         retryFailed: 'Retry failed',
-        na: 'N/A',
         retryHint: 'Retry will resend the request with the same parameters',
         retryClientHint: 'Use client retry (no account pinning)',
         retryUpstreamHint: 'Use upstream pinned retry (pin to the error account)',
@@ -2357,7 +2350,6 @@ export default {
           title: 'Alert Silencing (Maintenance Mode)',
           enabled: 'Enable silencing',
           globalUntil: 'Silence until (RFC3339)',
-          untilPlaceholder: '2026-01-05T00:00:00Z',
           untilHint: 'Leave empty to only toggle silencing without an expiry (not recommended).',
           reason: 'Reason',
           reasonPlaceholder: 'e.g., planned maintenance',

frontend/src/i18n/locales/zh.ts

@@ -2002,10 +2002,8 @@ export default {
       noSystemMetrics: '尚未收集系统指标。',
       collectedAt: '采集时间：',
       window: '窗口',
-      cpu: 'CPU',
       memory: '内存',
       db: '数据库',
-      redis: 'Redis',
       goroutines: '协程',
       jobs: '后台任务',
       jobsHelp: '点击“明细”查看任务心跳与报错信息',
@@ -2051,7 +2049,6 @@ export default {
       p99: 'p99',
       avg: 'avg',
       max: 'max',
-      qps: 'QPS',
       requests: '请求数',
       requestsTitle: '请求',
       upstream: '上游',
@@ -2205,7 +2202,6 @@ export default {
         },
         total: '总计：',
         searchPlaceholder: '搜索 request_id / client_request_id / message',
-        accountIdPlaceholder: 'account_id'
       },
       // Error Detail Modal
       errorDetail: {
@@ -2240,7 +2236,6 @@ export default {
           requestId: '请求ID'
         },
         retryMeta: {
-          http: 'HTTP',
           used: '使用账号',
           success: '成功',
           pinned: '固定账号'
@@ -2257,7 +2252,6 @@ export default {
         group: '分组',
         account: '账号',
         latency: '请求时长',
-        ttft: 'TTFT',
         businessLimited: '业务限制',
         requestPath: '请求路径',
         timings: '时序信息',
@@ -2278,7 +2272,6 @@ export default {
         confirmRetry: '确认重试',
         retrySuccess: '重试成功',
         retryFailed: '重试失败',
-        na: 'N/A',
         retryHint: '重试将使用相同的请求参数重新发送请求',
         retryClientHint: '使用客户端重试（不固定账号）',
         retryUpstreamHint: '使用上游固定重试（固定到错误的账号）',
@@ -2501,7 +2494,6 @@ export default {
           title: '告警静默（维护模式）',
           enabled: '启用静默',
           globalUntil: '静默截止时间（RFC3339）',
-          untilPlaceholder: '2026-01-05T00:00:00Z',
           untilHint: '建议填写截止时间，避免忘记关闭静默。',
           reason: '原因',
           reasonPlaceholder: '例如：计划维护',

frontend/src/views/admin/ops/components/OpsDashboardHeader.vue

@@ -1084,7 +1084,7 @@ function handleToolbarRefresh() {
                 <div class="mt-1 flex flex-wrap items-baseline gap-x-4 gap-y-2">
                   <div class="flex items-baseline gap-1.5">
                     <span :class="[props.fullscreen ? 'text-4xl' : 'text-xl sm:text-2xl', 'font-black text-gray-900 dark:text-white']">{{ displayRealTimeQps.toFixed(1) }}</span>
-                    <span :class="[props.fullscreen ? 'text-sm' : 'text-xs', 'font-bold text-gray-500']">{{ t('admin.ops.qps') }}</span>
+                    <span :class="[props.fullscreen ? 'text-sm' : 'text-xs', 'font-bold text-gray-500']">QPS</span>
                   </div>
                   <div class="flex items-baseline gap-1.5">
                     <span :class="[props.fullscreen ? 'text-4xl' : 'text-xl sm:text-2xl', 'font-black text-gray-900 dark:text-white']">{{ displayRealTimeTps.toFixed(1) }}</span>
@@ -1101,7 +1101,7 @@ function handleToolbarRefresh() {
                   <div :class="[props.fullscreen ? 'text-base' : 'text-sm', 'mt-1 space-y-0.5 font-medium text-gray-600 dark:text-gray-400']">
                     <div class="flex items-baseline gap-1.5">
                       <span class="font-black text-gray-900 dark:text-white">{{ realtimeQpsPeakLabel }}</span>
-                      <span class="text-xs">{{ t('admin.ops.qps') }}</span>
+                      <span class="text-xs">QPS</span>
                     </div>
                     <div class="flex items-baseline gap-1.5">
                       <span class="font-black text-gray-900 dark:text-white">{{ realtimeTpsPeakLabel }}</span>
@@ -1116,7 +1116,7 @@ function handleToolbarRefresh() {
                   <div :class="[props.fullscreen ? 'text-base' : 'text-sm', 'mt-1 space-y-0.5 font-medium text-gray-600 dark:text-gray-400']">
                     <div class="flex items-baseline gap-1.5">
                       <span class="font-black text-gray-900 dark:text-white">{{ realtimeQpsAvgLabel }}</span>
-                      <span class="text-xs">{{ t('admin.ops.qps') }}</span>
+                      <span class="text-xs">QPS</span>
                     </div>
                     <div class="flex items-baseline gap-1.5">
                       <span class="font-black text-gray-900 dark:text-white">{{ realtimeTpsAvgLabel }}</span>
@@ -1384,7 +1384,7 @@ function handleToolbarRefresh() {
         <!-- CPU -->
         <div class="rounded-xl bg-gray-50 p-3 dark:bg-dark-900">
           <div class="flex items-center gap-1">
-            <div class="text-[10px] font-bold uppercase tracking-wider text-gray-400">{{ t('admin.ops.cpu') }}</div>
+            <div class="text-[10px] font-bold uppercase tracking-wider text-gray-400">CPU</div>
             <HelpTooltip v-if="!props.fullscreen" :content="t('admin.ops.tooltips.cpu')" />
           </div>
           <div class="mt-1 text-lg font-black" :class="cpuPercentClass">
@@ -1433,7 +1433,7 @@ function handleToolbarRefresh() {
         <!-- Redis -->
         <div class="rounded-xl bg-gray-50 p-3 dark:bg-dark-900">
           <div class="flex items-center gap-1">
-            <div class="text-[10px] font-bold uppercase tracking-wider text-gray-400">{{ t('admin.ops.redis') }}</div>
+            <div class="text-[10px] font-bold uppercase tracking-wider text-gray-400">Redis</div>
             <HelpTooltip v-if="!props.fullscreen" :content="t('admin.ops.tooltips.redis')" />
           </div>
           <div class="mt-1 text-lg font-black" :class="redisMiddleClass">

frontend/src/views/admin/ops/components/OpsErrorDetailModal.vue

@@ -181,7 +181,7 @@
             </div>
           </div>
           <div>
-            <div class="text-xs font-bold uppercase text-gray-400">{{ t('admin.ops.errorDetail.ttft') }}</div>
+            <div class="text-xs font-bold uppercase text-gray-400">TTFT</div>
             <div class="mt-1 font-mono text-sm font-bold text-gray-900 dark:text-white">
               {{ detail.time_to_first_token_ms != null ? `${detail.time_to_first_token_ms}ms` : '—' }}
             </div>
@@ -434,7 +434,7 @@
               <div class="rounded-xl border border-gray-200 bg-white p-4 dark:border-dark-700 dark:bg-dark-800">
                 <div class="text-xs font-black text-gray-900 dark:text-white">{{ selectedA ? `#${selectedA.id} · ${selectedA.mode} · ${selectedA.status}` : '—' }}</div>
                 <div class="mt-2 text-xs text-gray-600 dark:text-gray-300">
-                  {{ t('admin.ops.errorDetail.retryMeta.http') }}: <span class="font-mono">{{ selectedA?.http_status_code ?? '—' }}</span> ·
+                  HTTP: <span class="font-mono">{{ selectedA?.http_status_code ?? '—' }}</span> ·
                   {{ t('admin.ops.errorDetail.retryMeta.used') }}: <span class="font-mono">
                     <el-tooltip v-if="selectedA?.used_account_id" :content="'ID: ' + selectedA.used_account_id" placement="top">
                       <span class="font-medium">{{ selectedA.used_account_name || selectedA.used_account_id }}</span>
@@ -448,7 +448,7 @@
               <div class="rounded-xl border border-gray-200 bg-white p-4 dark:border-dark-700 dark:bg-dark-800">
                 <div class="text-xs font-black text-gray-900 dark:text-white">{{ selectedB ? `#${selectedB.id} · ${selectedB.mode} · ${selectedB.status}` : '—' }}</div>
                 <div class="mt-2 text-xs text-gray-600 dark:text-gray-300">
-                  {{ t('admin.ops.errorDetail.retryMeta.http') }}: <span class="font-mono">{{ selectedB?.http_status_code ?? '—' }}</span> ·
+                  HTTP: <span class="font-mono">{{ selectedB?.http_status_code ?? '—' }}</span> ·
                   {{ t('admin.ops.errorDetail.retryMeta.used') }}: <span class="font-mono">
                     <el-tooltip v-if="selectedB?.used_account_id" :content="'ID: ' + selectedB.used_account_id" placement="top">
                       <span class="font-medium">{{ selectedB.used_account_name || selectedB.used_account_id }}</span>
@@ -469,7 +469,7 @@
                 </div>
                 <div class="mt-2 grid grid-cols-1 gap-2 text-xs text-gray-600 dark:text-gray-300 sm:grid-cols-4">
                   <div><span class="text-gray-400">{{ t('admin.ops.errorDetail.retryMeta.success') }}:</span> <span class="font-mono">{{ a.success ?? '—' }}</span></div>
-                  <div><span class="text-gray-400">{{ t('admin.ops.errorDetail.retryMeta.http') }}:</span> <span class="font-mono">{{ a.http_status_code ?? '—' }}</span></div>
+                  <div><span class="text-gray-400">HTTP:</span> <span class="font-mono">{{ a.http_status_code ?? '—' }}</span></div>
                   <div>
                     <span class="text-gray-400">{{ t('admin.ops.errorDetail.retryMeta.pinned') }}:</span>
                     <el-tooltip v-if="a.pinned_account_id" :content="'ID: ' + a.pinned_account_id" placement="top">
@@ -613,7 +613,7 @@ function close() {
 }
 
 function prettyJSON(raw?: string): string {
-  if (!raw) return t('admin.ops.errorDetail.na')
+  if (!raw) return 'N/A'
   try {
     return JSON.stringify(JSON.parse(raw), null, 2)
   } catch {

frontend/src/views/admin/ops/components/OpsRuntimeSettingsCard.vue

@@ -407,7 +407,7 @@ onMounted(() => {
               v-model="draftAlert.silencing.global_until_rfc3339"
               type="text"
               class="input font-mono text-sm"
-              :placeholder="t('admin.ops.runtime.silencing.untilPlaceholder')"
+                      placeholder="2026-01-05T00:00:00Z"
             />
             <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">{{ t('admin.ops.runtime.silencing.untilHint') }}</p>
           </div>
@@ -479,7 +479,7 @@ onMounted(() => {
                       v-model="(entry as any).until_rfc3339"
                       type="text"
                       class="input font-mono text-sm"
-                      :placeholder="t('admin.ops.runtime.silencing.untilPlaceholder')"
+              placeholder="2026-01-05T00:00:00Z"
                     />
                   </div>
 

frontend/src/views/admin/ops/components/OpsThroughputTrendChart.vue

@@ -61,7 +61,7 @@ const chartData = computed(() => {
     labels: props.points.map((p) => formatHistoryLabel(p.bucket_start, props.timeRange)),
     datasets: [
       {
-        label: t('admin.ops.qps'),
+        label: 'QPS',
         data: props.points.map((p) => p.qps ?? 0),
         borderColor: colors.value.blue,
         backgroundColor: colors.value.blueAlpha,
@@ -183,7 +183,7 @@ function downloadChart() {
         <HelpTooltip v-if="!props.fullscreen" :content="t('admin.ops.tooltips.throughputTrend')" />
       </h3>
       <div class="flex items-center gap-2 text-xs text-gray-500 dark:text-gray-400">
-        <span class="flex items-center gap-1"><span class="h-2 w-2 rounded-full bg-blue-500"></span>{{ t('admin.ops.qps') }}</span>
+        <span class="flex items-center gap-1"><span class="h-2 w-2 rounded-full bg-blue-500"></span>QPS</span>
         <span class="flex items-center gap-1"><span class="h-2 w-2 rounded-full bg-green-500"></span>{{ t('admin.ops.tpsK') }}</span>
         <template v-if="!props.fullscreen">
           <button