Convert text to speech and play audio with customizable voice parameters. Accepts text (required), speaker (optional, default: 888753760 - Anneli ノーマル), speedScale (0.5-2.0), pitchScale (-0.15-0.15), volumeScale (0.0-2.0), and playAudio (default: true).
get_speakers
Retrieve a list of all available voice characters and their styles, including IDs, names, and available voice styles.
notify_completion
Play a voice notification when tasks are completed. Accepts optional message (default: '処理が完了しました') and speaker (default: 888753760 - Anneli ノーマル).