feat: replace N8N_BASE_URL with N8N_WEBHOOK_URL (full webhook URL)

cmd/bot/main.go

@@ -51,11 +51,10 @@ func main() {
 	downloader := infratelegram.NewTelegramFileDownloader(bot)
 	sessionStore := storage.NewRedisSessionStore(redisClient, cfg.Redis.TTLHours)
 
-	// n8n workflows (configure via env: N8N_WORKFLOW_<INTENT>=<url>)
 	workflows := map[string]n8n.WorkflowConfig{
 		"default": {
 			ID:         "default",
-			WebhookURL: cfg.N8n.BaseURL + "/webhook/default",
+			WebhookURL: cfg.N8n.WebhookURL,
 			AuthToken:  cfg.N8n.AuthToken,
 		},
 	}