update sound

src/services/voiceApi.ts

@@ -40,6 +40,11 @@ export async function speechToText(
   form.append("provider", provider);
   const res = await fetch(`${VOICE_BASE_URL}/stt`, { method: "POST", body: form });
   if (!res.ok) throw new Error(`STT error: ${res.status}`);
+  const contentType = res.headers.get("content-type") ?? "";
+  if (!contentType.includes("application/json")) {
+    const body = await res.text();
+    throw new Error(`STT returned non-JSON (${res.status}): ${body.slice(0, 200)}`);
+  }
   return res.json();
 }