**feat(logging, middleware): add error-based logging support and error log management**

- Introduced `logOnErrorOnly` mode to enable logging only for error responses when request logging is disabled.
- Added endpoints to list and download error logs (`/request-error-logs`).
- Implemented error log file cleanup to retain only the newest 10 logs.
- Refactored `ResponseWriterWrapper` to support forced logging for error responses.
- Enhanced middleware to capture data for upstream error persistence.
- Improved log file naming and error log filename generation.

internal/api/server.go

@@ -509,6 +509,8 @@ func (s *Server) registerManagementRoutes() {
 
 		mgmt.GET("/logs", s.mgmt.GetLogs)
 		mgmt.DELETE("/logs", s.mgmt.DeleteLogs)
+		mgmt.GET("/request-error-logs", s.mgmt.GetRequestErrorLogs)
+		mgmt.GET("/request-error-logs/:name", s.mgmt.DownloadRequestErrorLog)
 		mgmt.GET("/request-log", s.mgmt.GetRequestLog)
 		mgmt.PUT("/request-log", s.mgmt.PutRequestLog)
 		mgmt.PATCH("/request-log", s.mgmt.PutRequestLog)