fix: update tts-gateway client initialization to disable mTLS temporarily

discord-bot/cmd/bot/main.go

@@ -88,7 +88,11 @@ func main() {
 		}
 	}()
 
-	ttsClient, err := ttsgateway.New(ctx, cfg.TTSGatewayAddr, cfg.TLSDir, log)
+	// TODO: pass cfg.TLSDir here once tts-gateway's own mTLS is re-enabled (currently
+	// deliberately disabled there for plaintext testing - see tts-gateway.yaml's commented-out
+	// TLS_DIR). Until then, dialing it with mTLS fails with "tls: first record does not look
+	// like a TLS handshake" since the server isn't speaking TLS at all yet.
+	ttsClient, err := ttsgateway.New(ctx, cfg.TTSGatewayAddr, "", log)
 	if err != nil {
 		log.Error("tts-gateway client setup failed", "err", err)
 		os.Exit(1)