feat: default TTS model overrides on (#1559) (thanks @Glucksberg)

Co-authored-by: Glucksberg <80581902+Glucksberg@users.noreply.github.com>

src/config/types.tts.ts

@@ -2,6 +2,25 @@ export type TtsProvider = "elevenlabs" | "openai";
 
 export type TtsMode = "final" | "all";
 
+export type TtsModelOverrideConfig = {
+  /** Enable model-provided overrides for TTS. */
+  enabled?: boolean;
+  /** Allow model-provided TTS text blocks. */
+  allowText?: boolean;
+  /** Allow model-provided provider override. */
+  allowProvider?: boolean;
+  /** Allow model-provided voice/voiceId override. */
+  allowVoice?: boolean;
+  /** Allow model-provided modelId override. */
+  allowModelId?: boolean;
+  /** Allow model-provided voice settings override. */
+  allowVoiceSettings?: boolean;
+  /** Allow model-provided normalization or language overrides. */
+  allowNormalization?: boolean;
+  /** Allow model-provided seed override. */
+  allowSeed?: boolean;
+};
+
 export type TtsConfig = {
   /** Enable auto-TTS (can be overridden by local prefs). */
   enabled?: boolean;
@@ -9,11 +28,26 @@ export type TtsConfig = {
   mode?: TtsMode;
   /** Primary TTS provider (fallbacks are automatic). */
   provider?: TtsProvider;
+  /** Optional model override for TTS auto-summary (provider/model or alias). */
+  summaryModel?: string;
+  /** Allow the model to override TTS parameters. */
+  modelOverrides?: TtsModelOverrideConfig;
   /** ElevenLabs configuration. */
   elevenlabs?: {
     apiKey?: string;
+    baseUrl?: string;
     voiceId?: string;
     modelId?: string;
+    seed?: number;
+    applyTextNormalization?: "auto" | "on" | "off";
+    languageCode?: string;
+    voiceSettings?: {
+      stability?: number;
+      similarityBoost?: number;
+      style?: number;
+      useSpeakerBoost?: boolean;
+      speed?: number;
+    };
   };
   /** OpenAI configuration. */
   openai?: {