fix(ops): 优化错误日志查询和详情展示

- 新增 GetErrorLogByID 接口用于获取单个错误日志详情
- 优化 GetErrorLogs 过滤逻辑，简化参数处理
- 简化前端错误详情模态框代码，提升可维护性
- 更新相关 API 接口和 i18n 翻译

backend/internal/service/ops_models.go

@@ -94,6 +94,10 @@ type OpsErrorLogFilter struct {
 	Resolved         *bool
 	Query            string
 
+	// Optional correlation keys for exact matching.
+	RequestID       string
+	ClientRequestID string
+
 	// View controls error categorization for list endpoints.
 	// - errors: show actionable errors (exclude business-limited / 429 / 529)
 	// - excluded: only show excluded errors