feat: add on-device TTS using Supertonic

frontend/src-tauri/Cargo.toml

@@ -39,5 +39,19 @@ axum = "0.8"
 pdf-extract = "0.7"
 base64 = "0.22"
 
+[target.'cfg(any(target_os = "macos", target_os = "linux", target_os = "windows"))'.dependencies]
+# TTS dependencies (Supertonic) - desktop only
+ort = "2.0.0-rc.10"
+ndarray = { version = "0.16", features = ["rayon"] }
+rand = "0.8"
+rand_distr = "0.4"
+hound = "3.5"
+unicode-normalization = "0.1"
+regex = "1.10"
+reqwest = { version = "0.12", features = ["stream"] }
+futures-util = "0.3"
+dirs = "5.0"
+sha2 = "0.10"
+
 [target.'cfg(target_os = "android")'.dependencies]
 openssl = { version = "0.10", default-features = false, features = ["vendored"] }

frontend/src-tauri/src/lib.rs

@@ -3,6 +3,8 @@ use tauri_plugin_deep_link::DeepLinkExt;
 
 mod pdf_extractor;
 mod proxy;
+#[cfg(desktop)]
+mod tts;
 
 #[cfg(desktop)]
 #[tauri::command]
@@ -34,6 +36,7 @@ pub fn run() {
         .plugin(tauri_plugin_os::init())
         .plugin(tauri_plugin_fs::init())
         .manage(proxy::ProxyState::new())
+        .manage(tts::TTSState::new())
         .invoke_handler(tauri::generate_handler![
             proxy::start_proxy,
             proxy::stop_proxy,
@@ -43,6 +46,12 @@ pub fn run() {
             proxy::test_proxy_port,
             pdf_extractor::extract_document_content,
             restart_for_update,
+            tts::tts_get_status,
+            tts::tts_download_models,
+            tts::tts_load_models,
+            tts::tts_synthesize,
+            tts::tts_unload_models,
+            tts::tts_delete_models,
         ])
         .setup(|app| {
             // Initialize proxy auto-start