chore: build backend frontend web

backend/gestion/db/db_categories.go

@@ -13,6 +13,7 @@ type Category struct {
 	Name         string    `json:"name"          gorm:"column:name"`
 	Color        string    `json:"color"         gorm:"column:color"`
 	IsComingSoon bool      `json:"is_coming_soon" gorm:"column:is_coming_soon"`
+	Position     int       `json:"position"      gorm:"column:position"`
 	CreatedAt    time.Time `json:"created_at"    gorm:"autoCreateTime"`
 }
 
@@ -30,7 +31,7 @@ func ValidateCategoryColor(color string) error {
 
 func (d *Database) GetAllCategories() ([]Category, error) {
 	var categories []Category
-	if err := d.GDB.Order("name ASC").Find(&categories).Error; err != nil {
+	if err := d.GDB.Order("position ASC, name ASC").Find(&categories).Error; err != nil {
 		return nil, err
 	}
 	if categories == nil {
@@ -43,7 +44,9 @@ func (d *Database) CreateCategory(name, color string, isComingSoon bool) (*Categ
 	if color == "" {
 		color = "#7c3aed"
 	}
-	c := Category{Name: name, Color: color, IsComingSoon: isComingSoon}
+	var maxPos int
+	d.GDB.Model(&Category{}).Select("COALESCE(MAX(position), 0)").Scan(&maxPos)
+	c := Category{Name: name, Color: color, IsComingSoon: isComingSoon, Position: maxPos + 1}
 	if err := d.GDB.Create(&c).Error; err != nil {
 		return nil, err
 	}
@@ -82,6 +85,18 @@ func (d *Database) DeleteCategory(id int) error {
 	return nil
 }
 
+// ReorderCategories met à jour les positions selon l'ordre du tableau d'IDs fourni.
+func (d *Database) ReorderCategories(ids []int) error {
+	tx := d.GDB.Begin()
+	for i, id := range ids {
+		if err := tx.Model(&Category{}).Where("id = ?", id).Update("position", i+1).Error; err != nil {
+			tx.Rollback()
+			return err
+		}
+	}
+	return tx.Commit().Error
+}
+
 func (d *Database) CategoryExists(name string) (bool, error) {
 	var count int64
 	err := d.GDB.Model(&Category{}).Where("name = ?", name).Count(&count).Error

backend/gestion/db/db_init.go

@@ -165,6 +165,23 @@ func InitDB() *Database {
 		log.Fatalf("❌ Erreur migration categories.is_coming_soon: %v", err)
 	}
 
+	// Migration: position d'affichage des catégories
+	if _, err = database.Exec(`ALTER TABLE categories ADD COLUMN IF NOT EXISTS position INTEGER NOT NULL DEFAULT 0`); err != nil {
+		log.Fatalf("❌ Erreur migration categories.position: %v", err)
+	}
+	// Backfill: attribuer des positions aux catégories existantes (ordre alphabétique)
+	if _, err = database.Exec(`
+		UPDATE categories c
+		SET position = sub.rn
+		FROM (
+			SELECT id, ROW_NUMBER() OVER (ORDER BY name ASC) AS rn
+			FROM categories
+		) sub
+		WHERE c.id = sub.id AND c.position = 0
+	`); err != nil {
+		log.Fatalf("❌ Erreur backfill categories.position: %v", err)
+	}
+
 	// Migration: table paramètres globaux de l'application
 	if _, err = database.Exec(`CREATE TABLE IF NOT EXISTS app_settings (
 		key   VARCHAR(100) PRIMARY KEY,

backend/gestion/handlers/categories.go

@@ -109,6 +109,26 @@ func UpdateCategory(c *gin.Context) {
 	})
 }
 
+func ReorderCategories(c *gin.Context) {
+	database := c.MustGet("database").(*db.Database)
+
+	var req struct {
+		IDs []int `json:"ids" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil || len(req.IDs) == 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Liste d'IDs requise"})
+		return
+	}
+
+	if err := database.ReorderCategories(req.IDs); err != nil {
+		log.Printf("❌ [CATEGORIES] Reorder erreur: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Erreur lors du réordonnancement"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"success": true})
+}
+
 func DeleteCategory(c *gin.Context) {
 	database := c.MustGet("database").(*db.Database)
 

backend/gestion/routes/routes.go

@@ -201,6 +201,7 @@ func SetupRoutes(router *gin.Engine, database *db.Database, geoService *services
 		// CATÉGORIES - GESTION ADMIN
 		// ============================================
 		adminGroupV2.POST("/categories", handlers.CreateCategory)
+		adminGroupV2.PUT("/categories/reorder", handlers.ReorderCategories)
 		adminGroupV2.PUT("/categories/:id", handlers.UpdateCategory)
 		adminGroupV2.DELETE("/categories/:id", handlers.DeleteCategory)
 		// ============================================