Fix Edge TTS voice - don't use browser voice settings

Browser voices (like Apple's) aren't compatible with Edge TTS.
Always use Edge's default voice (en-US-AvaNeural).

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/hooks/useTTS.ts

@@ -119,6 +119,7 @@ export function useTTS({ settings, text }: UseTTSOptions): UseTTSReturn {
 
     try {
       // Use proxy to avoid CORS issues
+      // Don't pass browser voices to Edge TTS - use default
       const response = await fetch("/api/tts", {
         method: "POST",
         headers: {
@@ -126,9 +127,8 @@ export function useTTS({ settings, text }: UseTTSOptions): UseTTSReturn {
         },
         body: JSON.stringify({
           engine: "edge",
-          url: settings.edgeUrl,
           text: textRef.current,
-          voice: settings.voice || "en-US-AvaNeural",
+          voice: "en-US-AvaNeural", // Always use Edge default voice
           speed: settings.speed,
         }),
       });