Reorganize handlers

backend/internal/api/user_handlers.go

@@ -6,15 +6,14 @@ import (
 	"novamd/internal/db"
 )
 
-func GetUser(db *db.DB) http.HandlerFunc {
+func (h *BaseHandler) GetUser(db *db.DB) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		userID, err := getUserID(r)
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusBadRequest)
+		ctx, ok := h.getContext(w, r)
+		if !ok {
 			return
 		}
 
-		user, err := db.GetUserByID(userID)
+		user, err := db.GetUserByID(ctx.UserID)
 		if err != nil {
 			http.Error(w, "Failed to get user", http.StatusInternalServerError)
 			return