Cleanup voicecat.cpp impl comments

core/src/voicecat.cpp

@@ -1,5 +1,5 @@
 /*
- * voicecat.cpp — C ABI implementation.
+ * voicecat.cpp: C ABI implementation.
  *
  * Lifecycle (create/destroy) and trivial accessors are handled directly here; everything else
  * delegates to vc_client (core/src/core/client.cpp).
@@ -47,7 +47,7 @@ vc_client* vc_client_create(const vc_config* cfg, vc_callbacks cb) {
 
 void vc_client_destroy(vc_client* c) { delete c; }
 
-/* ── Everything below delegates to vc_client (real or stub, per preset above). ───────── */
+/* Everything below delegates to vc_client (real or stub, per preset above). */
 
 vc_result vc_connect(vc_client* c, const char* host, uint16_t port) {
     if (c == nullptr || host == nullptr) return VC_ERR_INVALID_ARG;