diff --git a/cmd/bd/merge_slot.go b/cmd/bd/merge_slot.go
index 4d02e415..d05dc247 100644
--- a/cmd/bd/merge_slot.go
+++ b/cmd/bd/merge_slot.go
@@ -121,8 +121,13 @@ func getMergeSlotID() string {
 	// First try config.yaml (issue-prefix)
 	if configPrefix := config.GetString("issue-prefix"); configPrefix != "" {
 		prefix = strings.TrimSuffix(configPrefix, "-")
+	} else if daemonClient != nil {
+		// Daemon mode - use RPC to get config
+		if configResp, err := daemonClient.GetConfig(&rpc.GetConfigArgs{Key: "issue_prefix"}); err == nil && configResp.Value != "" {
+			prefix = strings.TrimSuffix(configResp.Value, "-")
+		}
 	} else if store != nil {
-		// Fall back to database config
+		// Direct mode - check database config
 		if dbPrefix, err := store.GetConfig(rootCtx, "issue_prefix"); err == nil && dbPrefix != "" {
 			prefix = strings.TrimSuffix(dbPrefix, "-")
 		}