feat: add multi-language for system log table

frontend/src/i18n/locales/en.ts

@@ -3503,6 +3503,71 @@ export default {
         requestTypeStream: 'Stream',
         requestTypeWs: 'WS'
       },
+      // System Log
+      systemLog: {
+        title: 'System Logs',
+        description: 'Sorted by latest time by default. Supports filtering, searching and conditional cleanup.',
+        health: {
+          queue: 'Queue',
+          written: 'Written',
+          dropped: 'Dropped',
+          failed: 'Failed',
+          lastError: 'Last write error'
+        },
+        runtimeConfig: {
+          title: 'Runtime Log Config (takes effect immediately)',
+          loading: 'Loading...',
+          level: 'Level',
+          stacktraceLevel: 'Stacktrace Level',
+          samplingInitial: 'Sampling Initial',
+          samplingThereafter: 'Sampling Thereafter',
+          retentionDays: 'Retention Days',
+          caller: 'caller',
+          sampling: 'sampling',
+          save: 'Save & Apply',
+          saving: 'Saving...',
+          rollback: 'Rollback to Default',
+          rollbackConfirm: 'Confirm rollback to startup config (env/yaml) and apply immediately?',
+          saveSuccess: 'Runtime log config applied',
+          saveFailed: 'Failed to save log config',
+          rollbackSuccess: 'Rolled back to startup log config',
+          rollbackFailed: 'Failed to rollback log config'
+        },
+        filters: {
+          timeRange: 'Time Range',
+          startTime: 'Start Time (optional)',
+          endTime: 'End Time (optional)',
+          level: 'Level',
+          levelAll: 'All',
+          component: 'Component',
+          componentPlaceholder: 'e.g. http.access',
+          requestId: 'request_id',
+          clientRequestId: 'client_request_id',
+          userId: 'user_id',
+          accountId: 'account_id',
+          platform: 'Platform',
+          model: 'Model',
+          keyword: 'Keyword',
+          keywordPlaceholder: 'message/request_id'
+        },
+        actions: {
+          search: 'Search',
+          reset: 'Reset',
+          cleanup: 'Cleanup by Filter',
+          cleanupConfirm: 'Confirm cleanup system logs by current filter? This action cannot be undone.',
+          cleanupSuccess: 'Cleanup complete, deleted {count} logs',
+          cleanupFailed: 'Failed to cleanup system logs',
+          refreshHealth: 'Refresh Health'
+        },
+        table: {
+          time: 'Time',
+          level: 'Level',
+          details: 'Log Details'
+        },
+        loading: 'Loading...',
+        empty: 'No system logs',
+        loadFailed: 'Failed to load system logs'
+      },
       // Error Details Modal
       errorDetails: {
         upstreamErrors: 'Upstream Errors',

frontend/src/i18n/locales/zh.ts

@@ -3668,6 +3668,71 @@ export default {
         requestTypeStream: '流式',
         requestTypeWs: 'WS'
       },
+      // System Log
+      systemLog: {
+        title: '系统日志',
+        description: '默认按最新时间倒序，支持筛选搜索与按条件清理。',
+        health: {
+          queue: '队列',
+          written: '写入',
+          dropped: '丢弃',
+          failed: '失败',
+          lastError: '最近写入错误'
+        },
+        runtimeConfig: {
+          title: '运行时日志配置（实时生效）',
+          loading: '加载中...',
+          level: '级别',
+          stacktraceLevel: '堆栈阈值',
+          samplingInitial: '采样初始',
+          samplingThereafter: '采样后续',
+          retentionDays: '保留天数',
+          caller: 'caller',
+          sampling: 'sampling',
+          save: '保存并生效',
+          saving: '保存中...',
+          rollback: '回滚默认值',
+          rollbackConfirm: '确认回滚为启动配置（env/yaml）并立即生效？',
+          saveSuccess: '日志运行时配置已生效',
+          saveFailed: '保存日志配置失败',
+          rollbackSuccess: '已回滚到启动日志配置',
+          rollbackFailed: '回滚日志配置失败'
+        },
+        filters: {
+          timeRange: '时间范围',
+          startTime: '开始时间（可选）',
+          endTime: '结束时间（可选）',
+          level: '级别',
+          levelAll: '全部',
+          component: '组件',
+          componentPlaceholder: '如 http.access',
+          requestId: 'request_id',
+          clientRequestId: 'client_request_id',
+          userId: 'user_id',
+          accountId: 'account_id',
+          platform: '平台',
+          model: '模型',
+          keyword: '关键词',
+          keywordPlaceholder: '消息/request_id'
+        },
+        actions: {
+          search: '查询',
+          reset: '重置',
+          cleanup: '按当前筛选清理',
+          cleanupConfirm: '确认按当前筛选条件清理系统日志？该操作不可撤销。',
+          cleanupSuccess: '清理完成，删除 {count} 条日志',
+          cleanupFailed: '清理系统日志失败',
+          refreshHealth: '刷新健康指标'
+        },
+        table: {
+          time: '时间',
+          level: '级别',
+          details: '日志详细信息'
+        },
+        loading: '加载中...',
+        empty: '暂无系统日志',
+        loadFailed: '系统日志加载失败'
+      },
       // Error Details Modal
       errorDetails: {
         upstreamErrors: '上游错误',