Merge pull request 'create CMS error handling' (#25) from TM-578 into develop

Reviewed-on: https://repo.ravanertebat.com/TM/tm_back/pulls/25
Reviewed-by: Hadi Barzegar <barzagarhadi@gmail.com>

cmd/web/main.go

@@ -204,6 +204,7 @@ func main() {
 	userValidator := user.NewValidationService()
 	customerValidator := customer.NewValidationService()
 	_ = kanban.NewValidationService() // Register hexcolor validator
+	_ = cms.NewValidationService()    // Register mediaRef validator
 
 	// Initialize services with repositories
 	auditLogger := audit.NewLogger(logger)