- Implement `SpeechQueue` to manage opponent dialogue clips
- Add `speech` configuration to opponent data (Cy-Bro, Victor, Croc) with intro, happy, and upset states
- Trigger random speech clips in `Portrait.js` based on emotion and a 60% probability
- Play intro speech clips when opponent portraits are created
- Update `MusicPlayer` volume to 0.15 and clean up formatting/whitespace
