Refactor AIAgent runtime handling and remove unused fields

internal/ai/application/runtime/workflow_runtime.go

@@ -8,37 +8,41 @@ import (
 	"agent-desk/internal/ai/workflow/dsl"
 	"agent-desk/internal/models"
 	"agent-desk/internal/pkg/enums"
+	"agent-desk/internal/pkg/errorsx"
 	"agent-desk/internal/repositories"
 
 	"github.com/mlogclub/simple/sqls"
 )
 
-func resolveAgentWorkflow(aiAgent models.AIAgent) (compiler.Result, bool) {
-	if aiAgent.RuntimeMode != enums.AIAgentRuntimeModeWorkflow || aiAgent.WorkflowVersionID <= 0 {
-		return compiler.Result{}, false
+func resolveAgentWorkflow(aiAgent models.AIAgent) (compiler.Result, error) {
+	if aiAgent.WorkflowVersionID <= 0 {
+		return compiler.Result{}, errorsx.InvalidParam("workflow version is required")
 	}
 	version := repositories.AIWorkflowVersionRepository.Get(sqls.DB(), aiAgent.WorkflowVersionID)
 	if version == nil || version.Status != enums.StatusOk {
-		return compiler.Result{}, false
+		return compiler.Result{}, errorsx.InvalidParam("workflow version does not exist")
 	}
 	var def dsl.Definition
 	if err := json.Unmarshal([]byte(version.Definition), &def); err != nil {
-		return compiler.Result{}, false
+		return compiler.Result{}, errorsx.InvalidParam("workflow definition is invalid")
 	}
-	return compiler.Compile(def), true
+	return compiler.Compile(def), nil
 }
 
-func applyWorkflowInstruction(aiAgent models.AIAgent) models.AIAgent {
-	result, ok := resolveAgentWorkflow(aiAgent)
-	if !ok || strings.TrimSpace(result.Appendix) == "" {
-		return aiAgent
+func prepareWorkflowAgent(aiAgent models.AIAgent) (models.AIAgent, error) {
+	result, err := resolveAgentWorkflow(aiAgent)
+	if err != nil {
+		return aiAgent, err
+	}
+	if strings.TrimSpace(result.Appendix) == "" {
+		return aiAgent, nil
 	}
 	prompt := strings.TrimSpace(aiAgent.SystemPrompt)
 	appendix := strings.TrimSpace(result.Appendix)
 	if prompt == "" {
 		aiAgent.SystemPrompt = appendix
-		return aiAgent
+		return aiAgent, nil
 	}
 	aiAgent.SystemPrompt = prompt + "\n\n" + appendix
-	return aiAgent
+	return aiAgent, nil
 }