Refactor: split prompt definition from execution settings and migrate run contracts to prompt_* + execution_target

internal/prompt/go_renderer.go

@@ -23,16 +23,19 @@ func NewGoRenderer() Renderer {
 	return &goRenderer{}
 }
 
-func (r *goRenderer) Render(ctx context.Context, profile *domain.PromptProfile, inputs map[string]*domain.Artifact, vars map[string]string) (*domain.RenderedPrompt, error) {
-	if profile == nil {
-		return nil, fmt.Errorf("%w: nil profile", ErrRenderFailure)
+func (r *goRenderer) Render(ctx context.Context, definition *domain.PromptDefinition, inputs map[string]*domain.Artifact, vars map[string]string) (*domain.RenderedPrompt, error) {
+	if definition == nil {
+		return nil, fmt.Errorf("%w: nil prompt definition", ErrRenderFailure)
 	}
 
 	// 1. Verify required inputs
-	for _, req := range profile.ExpectedInputs {
-		art, ok := inputs[req]
+	for _, in := range definition.Inputs {
+		if !in.Required {
+			continue
+		}
+		art, ok := inputs[in.Name]
 		if !ok || art == nil {
-			return nil, fmt.Errorf("%w: %s", ErrMissingRequiredInput, req)
+			return nil, fmt.Errorf("%w: %s", ErrMissingRequiredInput, in.Name)
 		}
 	}
 
@@ -49,7 +52,7 @@ func (r *goRenderer) Render(ctx context.Context, profile *domain.PromptProfile,
 
 	var renderedMessages []domain.RenderedMessage
 
-	for i, tmplMsg := range profile.Templates {
+	for i, tmplMsg := range definition.Templates {
 		select {
 		case <-ctx.Done():
 			return nil, ctx.Err()
@@ -61,6 +64,9 @@ func (r *goRenderer) Render(ctx context.Context, profile *domain.PromptProfile,
 		}
 
 		// Parse and execute template
+		if tmplMsg.ContentFile != "" {
+			return nil, fmt.Errorf("%w: message %d: content_file is not implemented yet", ErrRenderFailure, i)
+		}
 		tmpl, err := template.New(fmt.Sprintf("msg_%d", i)).Funcs(funcs).Option("missingkey=error").Parse(tmplMsg.Content)
 		if err != nil {
 			return nil, fmt.Errorf("%w: message %d: %v", ErrInvalidTemplate, i, err)