feat: new engine format

internal/registry/engine.go

@@ -7,7 +7,7 @@ import (
 )
 
 type Engine interface {
-	Load() Process
+	Load(Repr) (Process, error)
 	Name() string
 	InType() string
 }
@@ -22,8 +22,18 @@ func (e convertedEngine[T]) InType() string { return e.inType }
 
 func (e convertedEngine[T]) Name() string { return e.name }
 
-func (e convertedEngine[T]) Load() Process {
-	return convertedProcess[T]{e.engine.Load(), e.inType}
+func (e convertedEngine[T]) Load(r Repr) (Process, error) {
+	t, ok := r.Data().(T)
+	if !ok {
+		return nil, fmt.Errorf("'ncorrent format '%s' for engine '%s'", r.ID(), e.inType)
+	}
+
+	process, err := e.engine(t)
+	if err != nil {
+		return nil, err
+	}
+
+	return convertedProcess[T]{process, e.inType}, nil
 }
 
 func RegisterEngine[T any](registry *Registry, e engine.Engine[T], name, inType string) error {