fix: fixup adresse correction

backend/gestion/services/adresses_correction.go

@@ -3,17 +3,13 @@ package services
 import (
 	"encoding/json"
 	"fmt"
+	"gestion/utils"
 	"io"
 	"math"
 	"net/http"
 	"net/url"
 	"strings"
 	"time"
-	"unicode"
-
-	"golang.org/x/text/runes"
-	"golang.org/x/text/transform"
-	"golang.org/x/text/unicode/norm"
 )
 
 // ============================================
@@ -125,7 +121,7 @@ func (acs *AddressCorrectionService) nominatimFuzzySearch(address string) (*Addr
 				CorrectedAddress:  corrected,
 				Coordinates:       Coordinates{Latitude: best.Latitude, Longitude: best.Longitude},
 				Confidence:        confidence,
-				CorrectionApplied: !strings.EqualFold(normalize(address), normalize(corrected)),
+				CorrectionApplied: !strings.EqualFold(utils.NormalizeAddress(address), utils.NormalizeAddress(corrected)),
 				Source:            "fuzzy",
 			}, nil
 		}
@@ -233,7 +229,7 @@ func (acs *AddressCorrectionService) structuredSearch(address string) (*AddressS
 // buildAddressVariants génère plusieurs variantes d'une adresse pour maximiser les chances
 func buildAddressVariants(address string) []string {
 	variants := []string{address}
-	normalized := normalize(address)
+	normalized := utils.NormalizeAddress(address)
 
 	// Variante sans accents
 	if normalized != address {
@@ -377,8 +373,8 @@ func parseAddressParts(address string) addressParts {
 
 // computeConfidence calcule un score de similarité entre l'adresse originale et la suggestion
 func computeConfidence(original, suggested string, nominatimImportance float64) float64 {
-	origNorm := normalize(strings.ToLower(original))
-	suggNorm := normalize(strings.ToLower(suggested))
+	origNorm := utils.NormalizeAddress(strings.ToLower(original))
+	suggNorm := utils.NormalizeAddress(strings.ToLower(suggested))
 
 	// Score de similarité sur les mots communs
 	origWords := strings.Fields(origNorm)
@@ -439,13 +435,6 @@ func formatNominatimAddress(s NominatimSuggestion) string {
 	return strings.Join(parts, ", ")
 }
 
-// normalize supprime les accents et normalise les espaces
-func normalize(s string) string {
-	t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
-	result, _, _ := transform.String(t, s)
-	return strings.Join(strings.Fields(result), " ")
-}
-
 // isPostcode retourne true si le mot ressemble à un code postal français
 func isPostcode(s string) bool {
 	if len(s) != 5 {