Update: TTS settings modal and settings types

src/types/settings.ts

@@ -0,0 +1,15 @@
+export interface TtsSettings {
+  rate: number; // 0.1 - 2.0
+  pitch: number; // 0 - 2
+  voiceURI?: string; // exact voice identifier
+  autoSpeakWord: boolean;
+  autoSpeakExample: boolean;
+}
+
+export const DEFAULT_TTS_SETTINGS: TtsSettings = {
+  rate: 0.85,
+  pitch: 1.0,
+  voiceURI: undefined,
+  autoSpeakWord: false,
+  autoSpeakExample: false,
+};