feat: enhance tool search functionality and streamline tool management in AI agent

internal/ai/runtime/service.go

@@ -19,7 +19,6 @@ func newService() *service {
 	return &service{
 		runtime: engine.NewService(),
 		registry: registry.NewRegistry(
-			tools.NewToolSearchTool(),
 			tools.NewCreateTicketConfirmTool(),
 		),
 	}
@@ -95,7 +94,7 @@ func (s *service) prepareToolsForRun(req *Request) error {
 		AIAgent:          req.AIAgent,
 		AIConfig:         req.AIConfig,
 		UserMessage:      req.UserMessage,
-		AllowedToolCodes: expandRuntimeAllowedToolCodes(resolveAllowedToolCodes(req.AIAgent, req.SelectedSkill)),
+		AllowedToolCodes: resolveAllowedToolCodes(req.AIAgent, req.SelectedSkill),
 	})
 	if err != nil {
 		return err
@@ -113,7 +112,7 @@ func (s *service) prepareToolsForResume(req *ResumeRequest) error {
 		Conversation:     req.Conversation,
 		AIAgent:          req.AIAgent,
 		AIConfig:         req.AIConfig,
-		AllowedToolCodes: expandRuntimeAllowedToolCodes(parseAgentAllowedToolCodes(req.AIAgent)),
+		AllowedToolCodes: parseAgentAllowedToolCodes(req.AIAgent),
 	})
 	if err != nil {
 		return err
@@ -277,36 +276,3 @@ func resolveAllowedToolCodes(aiAgent *models.AIAgent, skill *models.SkillDefinit
 		return ret
 	}
 }
-
-func expandRuntimeAllowedToolCodes(items []string) []string {
-	ret := make([]string, 0, len(items)+1)
-	hasMCPTool := false
-	for _, item := range items {
-		item = strings.TrimSpace(item)
-		if item == "" {
-			continue
-		}
-		ret = append(ret, item)
-		serverCode, toolName := toolx.SplitMCPToolCode(item)
-		if serverCode != "" && toolName != "" {
-			hasMCPTool = true
-		}
-	}
-	if hasMCPTool {
-		ret = appendIfMissingString(ret, toolx.BuiltinToolSearchToolCode)
-	}
-	return ret
-}
-
-func appendIfMissingString(items []string, value string) []string {
-	value = strings.TrimSpace(value)
-	if value == "" {
-		return items
-	}
-	for _, item := range items {
-		if strings.TrimSpace(item) == value {
-			return items
-		}
-	}
-	return append(items, value)
-}