refactor(cron): flatten if-else chains and suppress dupl lint

pkg/tools/cron.go

@@ -85,6 +85,8 @@ Use 'command' to execute shell commands directly.`
 }
 
 // Parameters returns the tool parameters schema
+//
+//nolint:dupl // Tool parameter schemas intentionally use similar JSON-schema map literals.
 func (t *CronTool) Parameters() map[string]any {
 	return map[string]any{
 		"type": "object",
@@ -317,16 +319,20 @@ func (t *CronTool) updateJob(ctx context.Context, args map[string]any) *ToolResu
 
 	patches := 0
 
-	if name, present, errResult := optionalNonEmptyString(args, "name"); errResult != nil {
+	name, namePresent, nameErr := optionalNonEmptyString(args, "name")
-		return errResult
+	if nameErr != nil {
-	} else if present {
+		return nameErr
+	}
+	if namePresent {
 		job.Name = name
 		patches++
 	}
 
-	if message, present, errResult := optionalNonEmptyString(args, "message"); errResult != nil {
+	message, messagePresent, messageErr := optionalNonEmptyString(args, "message")
-		return errResult
+	if messageErr != nil {
-	} else if present {
+		return messageErr
+	}
+	if messagePresent {
 		job.Payload.Message = message
 		patches++
 	}

pkg/tools/shell.go

@@ -215,6 +215,7 @@ func (t *ExecTool) Description() string {
 	return `Execute shell commands. Use background=true for long-running commands (returns sessionId). Use pty=true for interactive commands (can combine with background=true). Use poll/read/write/send-keys/kill with sessionId to manage background sessions. Sessions auto-cleanup 30 minutes after process exits; use kill to terminate early. Output buffer limit: 1MB.`
 }
 
+//nolint:dupl // Tool parameter schemas intentionally use similar JSON-schema map literals.
 func (t *ExecTool) Parameters() map[string]any {
 	return map[string]any{
 		"type": "object",