fix(i18n): 回退到稳定的 32% 覆盖率状态 (tsc + Vite 构建通过)

批量转换脚本引入的语法错误已回退，保留稳定的 i18n 转换:
- 翻译词典: 22 namespaces, 3600+ keys
- 已接入: 145+ 文件 (Dashboard/Login/K8s 主页面/Monitor/System/Deploy)
- 语言切换器在 Header 中可用 (🇨🇳/🇺🇸)
- tsc 零错误, Vite 构建成功

frontend/src/pages/monitor/site-monitor/observability/analytics.ts

@@ -1,7 +1,6 @@
 // 站点拨测可观测分析 — 按协议聚合指标与异常事件 // Logan.Li
 import type { SiteResult, SiteTask } from '../helpers';
 import { fmtMs, fmtTime, normalizeProbeType } from '../helpers';
-import i18n from '@/i18n';
 
 export interface ProbeEvent {
   id: string;
@@ -93,16 +92,16 @@ export function analyzeHttpResults(results: SiteResult[], task: SiteTask): HttpO
     }
     if (code >= 500) {
       err5xx++;
-      pushEvent(events, r, `HTTP ${code}`, 'error', r.error_message || i18n.t('monitor.analytics.s71de8a'));
+      pushEvent(events, r, `HTTP ${code}`, 'error', r.error_message || '服务端错误');
     } else if (code >= 400) {
       err4xx++;
-      pushEvent(events, r, `HTTP ${code}`, 'warn', r.error_message || i18n.t('monitor.analytics.sdc751c'));
+      pushEvent(events, r, `HTTP ${code}`, 'warn', r.error_message || '客户端/鉴权错误');
     } else if (r.status === 'timeout') {
       otherErr++;
-      pushEvent(events, r, i18n.t('common.timeoutError'), 'error', r.error_message);
+      pushEvent(events, r, '请求超时', 'error', r.error_message);
     } else {
       otherErr++;
-      pushEvent(events, r, code > 0 ? `HTTP ${code}` : i18n.t('monitor.analytics.sf50bf4'), 'error', r.error_message);
+      pushEvent(events, r, code > 0 ? `HTTP ${code}` : '请求失败', 'error', r.error_message);
     }
   }
   const latest = results[0];
@@ -128,9 +127,9 @@ export function analyzeSslResults(results: SiteResult[], task: SiteTask): SslObs
   const events: ProbeEvent[] = [];
   for (const r of results) {
     if (r.status !== 'success') {
-      pushEvent(events, r, i18n.t('monitor.analytics.sddbae5'), 'error', r.error_message);
+      pushEvent(events, r, 'TLS 握手失败', 'error', r.error_message);
     } else if (r.ssl_days_remaining != null && r.ssl_days_remaining < 30) {
-      pushEvent(events, r, i18n.t('monitor.analytics.s819918', { r.ssl_days_remaining: r.ssl_days_remaining }), r.ssl_days_remaining <= 7 ? 'error' : 'warn', expiry);
+      pushEvent(events, r, `证书剩余 ${r.ssl_days_remaining} 天`, r.ssl_days_remaining <= 7 ? 'error' : 'warn', expiry);
     }
   }
   const chart = tooltipOrder(results)
@@ -158,10 +157,10 @@ function analyzeLatencyResults(results: SiteResult[], label: string): LatencyObs
     const latency = r.response_time ?? r.total_time ?? 0;
     const failed = r.status !== 'success';
     const spike = !failed && latency > spikeThreshold;
-    if (failed) pushEvent(events, r, i18n.t('monitor.analytics.s6fce61', { label: label }), 'error', r.error_message || r.remote_ip);
+    if (failed) pushEvent(events, r, `${label}失败`, 'error', r.error_message || r.remote_ip);
     else if (spike) {
       spikeCount++;
-      pushEvent(events, r, i18n.t('monitor.analytics.s80bda9', { label: label }), 'warn', fmtMs(latency));
+      pushEvent(events, r, `${label}延迟波动`, 'warn', fmtMs(latency));
     }
     return { time: fmtTime(r.checked_at).slice(-5), latency, failed, spike };
   });
@@ -173,7 +172,7 @@ export function analyzePingResults(results: SiteResult[]): LatencyObsSummary {
 }
 
 export function analyzeDnsResults(results: SiteResult[]): LatencyObsSummary {
-  return analyzeLatencyResults(results, i18n.t('cloud.domainResolve'));
+  return analyzeLatencyResults(results, 'DNS 解析');
 }
 
 export function analyzeTcpResults(results: SiteResult[]): ConnectivityObsSummary {
@@ -186,7 +185,7 @@ export function analyzeTcpResults(results: SiteResult[]): ConnectivityObsSummary
     const failed = r.status !== 'success';
     if (failed) {
       lastFailAt = r.checked_at;
-      pushEvent(events, r, i18n.t('monitor.analytics.s0614a3'), 'error', r.error_message || i18n.t('aiops.llmTestFailed'));
+      pushEvent(events, r, 'TCP 不通', 'error', r.error_message || '连接失败');
     }
     return { time: fmtTime(r.checked_at).slice(-5), up: failed ? 0 : 100, failed };
   });