feat: per model tts voice

src/lib/components/chat/Messages/ResponseMessage.svelte

@@ -207,6 +207,19 @@
 		speaking = true;
 		const content = removeAllDetails(message.content);
 
+		// Get voice: model-specific > user settings > config default
+		const getVoiceId = () => {
+			// Check for model-specific TTS voice first
+			if (model?.info?.meta?.tts?.voice) {
+				return model.info.meta.tts.voice;
+			}
+			// Fall back to user settings or config default
+			if ($settings?.audio?.tts?.defaultVoice === $config.audio.tts.voice) {
+				return $settings?.audio?.tts?.voice ?? $config?.audio?.tts?.voice;
+			}
+			return $config?.audio?.tts?.voice;
+		};
+
 		if ($config.audio.tts.engine === '') {
 			let voices = [];
 			const getVoicesLoop = setInterval(() => {
@@ -214,11 +227,10 @@
 				if (voices.length > 0) {
 					clearInterval(getVoicesLoop);
 
+					const voiceId = getVoiceId();
 					const voice =
 						voices
-							?.filter(
-								(v) => v.voiceURI === ($settings?.audio?.tts?.voice ?? $config?.audio?.tts?.voice)
-							)
+							?.filter((v) => v.voiceURI === voiceId)
 							?.at(0) ?? undefined;
 
 					console.log(voice);
@@ -265,7 +277,9 @@
 				return;
 			}
 
-			console.debug('Prepared message content for TTS', messageContentParts);
+			const voiceId = getVoiceId();
+			console.debug('Prepared message content for TTS', messageContentParts, 'voice:', voiceId);
+
 			if ($settings.audio?.tts?.engine === 'browser-kokoro') {
 				if (!$TTSWorker) {
 					await TTSWorker.set(
@@ -281,7 +295,7 @@
 					const url = await $TTSWorker
 						.generate({
 							text: sentence,
-							voice: $settings?.audio?.tts?.voice ?? $config?.audio?.tts?.voice
+							voice: voiceId
 						})
 						.catch((error) => {
 							console.error(error);
@@ -300,9 +314,7 @@
 				for (const [idx, sentence] of messageContentParts.entries()) {
 					const res = await synthesizeOpenAISpeech(
 						localStorage.token,
-						$settings?.audio?.tts?.defaultVoice === $config.audio.tts.voice
-							? ($settings?.audio?.tts?.voice ?? $config?.audio?.tts?.voice)
-							: $config?.audio?.tts?.voice,
+						voiceId,
 						sentence
 					).catch((error) => {
 						console.error(error);
@@ -324,6 +336,7 @@
 		}
 	};
 
+
 	let preprocessedDetailsCache = [];
 
 	function preprocessForEditing(content: string): string {