Fix geosite:ru rule (Normalization to RU vs lowercase ru) (#3971)

* Fix geosite:ru rule (Normalization to RU vs lowercase ru)

* fix

web/web.go

@@ -12,6 +12,7 @@ import (
 	"net"
 	"net/http"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
@@ -293,9 +294,26 @@ func (s *Server) initRouter() (*gin.Engine, error) {
 	return engine, nil
 }
 
+// normalizeExistingGeositeFiles normalizes country codes in all geosite .dat
+// files found in the bin directory so Xray-core can locate entries correctly.
+func normalizeExistingGeositeFiles() {
+	binDir := config.GetBinFolderPath()
+	matches, err := filepath.Glob(filepath.Join(binDir, "geosite*.dat"))
+	if err != nil {
+		logger.Warningf("Failed to glob geosite files: %v", err)
+		return
+	}
+	for _, path := range matches {
+		if err := service.NormalizeGeositeCountryCodes(path); err != nil {
+			logger.Warningf("Failed to normalize geosite country codes in %s: %v", path, err)
+		}
+	}
+}
+
 // startTask schedules background jobs (Xray checks, traffic jobs, cron
 // jobs) which the panel relies on for periodic maintenance and monitoring.
 func (s *Server) startTask() {
+	normalizeExistingGeositeFiles()
 	s.customGeoService.EnsureOnStartup()
 	err := s.xrayService.RestartXray(true)
 	if err != nil {