fix(i18n): cost-predict.ts hash key 清理 + 硬编码中文清零 + 错误 key 引用修复

- 23 个 predictutilsts.s* hash-style 键重命名为 costPredict.* 语义化键
- 7 处 buildCostInsightPrompt 硬编码中文模板字面量→i18n.t() 插值调用
- 修复 costRecommendation 函数引用错误 key (predictMemLeak→costPredict.rec*)
- 修复 dimension 字段引用 predictDiskFull→costPredict.allProviders
- 修复 providerLabel 引用 predictIn24h→costPredict.allProviders
- 新增 34 个语义化翻译键 (aiops.costPredict.*), zh/en 8102→8113 对齐
- tsc -b=0, npm build✓ (19.29s), ESLint=0/43/any=0, go build=0
- 17/17 集成测试通过

frontend/src/locales/en-US.json

@@ -8602,29 +8602,6 @@
     "predictutilsts.providerAliyun": "Alibaba Cloud",
     "predictutilsts.providerHuawei": "Huawei Cloud",
     "predictutilsts.providerTencent": "Tencent Cloud",
-    "predictutilsts.sd4e5f6g7": "End of month",
-    "predictutilsts.se5f6g7h8": "Within today",
-    "predictutilsts.sf6g7h8i9": "Within 1 day",
-    "predictutilsts.sg5a3d8e1": "All",
-    "predictutilsts.sg7h8i9j0": "Within {{days}} days",
-    "predictutilsts.sh7c2b9d6": "Other",
-    "predictutilsts.sh8i9j0k1": "In about {{days}} days",
-    "predictutilsts.si9j0k1l2": "Budget Rule",
-    "predictutilsts.sj0k1l2m3": "Bills front-loaded at month start, may contain pre-paid or retired resources; prediction uses recent 7-day run rate",
-    "predictutilsts.sk1l2m3n4": "Insufficient daily bill samples, lower prediction confidence",
-    "predictutilsts.sl2m3n4o5": "Daily bills are relatively stable, extrapolated by trend",
-    "predictutilsts.sm3n4o5p6": "No budget threshold risk",
-    "predictutilsts.sn4o5p6q7": "No service-level detail",
-    "predictutilsts.so5p6q7r8": "You are a FinOps cloud cost optimization expert. Based on the following cloud billing prediction data, provide comprehensive cost risk assessment and actionable cost-reduction recommendations:",
-    "predictutilsts.sp6q7r8s9": "[Overview]",
-    "predictutilsts.sq7r8s9t0": "[Top Service Costs]",
-    "predictutilsts.sr8s9t0u1": "[Dimension Forecasts]",
-    "predictutilsts.ss9t0u1v2": "[Budget Risks]",
-    "predictutilsts.st0u1v2w3": "Output requirements (Markdown, Chinese):",
-    "predictutilsts.su1v2w3x4": "1. Use **bold subtitles** for sections with 1 key point each, e.g.: **Data Anomalies**, **Idle Resource Cleanup**, **Billing Mode Optimization**, **Storage Lifecycle**",
-    "predictutilsts.sv2w3x4y5": "2. If monthly avg and recent 7-day avg clearly contradict predicted month-end, explain in 'Data Anomalies' (pre-paid/shutdown etc.)",
-    "predictutilsts.sw3x4y5z6": "3. Give actionable recommendations per top service (EIP/disk/ECS spec/OSS lifecycle/reserved instances etc.)",
-    "predictutilsts.sx4y5z6a7": "4. Pick 3-5 most relevant recommendations, under 350 words, no generic platitudes",
     "probabilityColon": "Probability: ",
     "processing": "Processing...",
     "providerAndCredential": "Model & Credential",
@@ -8775,7 +8752,41 @@
       "recentReleases": "Recent releases:",
       "overviewFallback": "Servers:{{servers}}(running {{running}}) | K8s clusters:{{clusters}} Nodes:{{nodes}} Pods:{{pods}} | Alerts:{{alerts}}(firing {{firing}}) | Pipelines:{{pipelines}}(success {{rate}}%) | Monthly cost:¥{{cost}}",
       "noAgentData": "(No Agent data currently, monitoring Agent may not be deployed)"
-    }
+    },
+    "costPredict.allProviders": "All",
+    "costPredict.unknownService": "Other",
+    "costPredict.monthEnd": "End of month",
+    "costPredict.withinToday": "Within today",
+    "costPredict.withinOneDay": "Within 1 day",
+    "costPredict.withinDays": "Within {{days}} days",
+    "costPredict.approxAfterDays": "In about {{days}} days",
+    "costPredict.budgetRule": "Budget Rule",
+    "costPredict.frontLoadedHint": "Bills front-loaded at month start, may contain pre-paid or retired resources; prediction uses recent 7-day run rate",
+    "costPredict.sparseHint": "Insufficient daily bill samples, lower prediction confidence",
+    "costPredict.steadyHint": "Daily bills are relatively stable, extrapolated by trend",
+    "costPredict.noBudgetRisk": "No budget threshold risk",
+    "costPredict.noServiceDetail": "No service-level detail",
+    "costPredict.promptIntro": "You are a FinOps cloud cost optimization expert. Based on the following cloud billing prediction data, provide comprehensive cost risk assessment and actionable cost-reduction recommendations:",
+    "costPredict.sectionOverview": "[Overview]",
+    "costPredict.sectionTopServices": "[Top Service Costs]",
+    "costPredict.sectionDimensionForecast": "[Dimension Forecasts]",
+    "costPredict.sectionBudgetRisk": "[Budget Risks]",
+    "costPredict.promptRequirements": "Output requirements (Markdown, Chinese):",
+    "costPredict.promptReq1": "1. Use **bold subtitles** for sections with 1 key point each, e.g.: **Data Anomalies**, **Idle Resource Cleanup**, **Billing Mode Optimization**, **Storage Lifecycle**",
+    "costPredict.promptReq2": "2. If monthly avg and recent 7-day avg clearly contradict predicted month-end, explain in 'Data Anomalies' (pre-paid/shutdown etc.)",
+    "costPredict.promptReq3": "3. Give actionable recommendations per top service (EIP/disk/ECS spec/OSS lifecycle/reserved instances etc.)",
+    "costPredict.promptReq4": "4. Pick 3-5 most relevant recommendations, under 350 words, no generic platitudes",
+    "costPredict.dimLine": "- {{dim}}: This month {{current}} CNY → Predicted month-end {{predicted}} CNY (trend {{trend}})",
+    "costPredict.riskLine": "- {{rule}} ({{provider}}): Current {{current}} / Threshold {{threshold}}, Predicted {{predicted}}, Probability {{probability}}%",
+    "costPredict.serviceLine": "- {{service}}: {{cost}} CNY",
+    "costPredict.monthSpent": "- Spent this month: {{amount}} CNY",
+    "costPredict.predictedEnd": "- Predicted month-end: {{amount}} CNY (confidence {{confidence}}%)",
+    "costPredict.dailySummary": "- Monthly avg: {{dailyAvg}} CNY; Recent 7-day avg: {{recentAvg}} CNY; {{daysRemaining}} days remaining",
+    "costPredict.billingPatternLabel": "- Billing pattern: {{hint}}",
+    "costPredict.recHighSpend": "Cost rising rapidly, investigate high-spend resources and optimize specs",
+    "costPredict.recRising": "Cost trending up, monitor new service spending",
+    "costPredict.recDeclining": "Cost declining, optimization is effective",
+    "costPredict.recStable": "Cost stable, maintain current strategy"
   },
   "breadcrumb": {
     "aiAlertAnalyzer": "Alert Analysis",