Add local spoken passages with Google retrieval and isolated runtime setup

apps/desktop/src-tauri/src/main.rs

@@ -11,6 +11,7 @@ mod media_preview;
 mod model_download;
 mod semantic_commands;
 mod settings;
+mod speech_setup;
 mod watching;
 
 use ai_commands::{generate_ai, prepare_ai_source, AiSession};
@@ -650,7 +651,18 @@ fn main() {
                     "The media decoder is missing from this installation. Repair or reinstall searchi.".into()
                 })
             })();
+            let speech_worker = std::env::var_os("SEARCHI_SPEECH_WORKER").map(PathBuf::from).unwrap_or_else(|| {
+                            let backend = if std::env::var("SEARCHI_FORCE_CPU").as_deref() == Ok("1") { "cpu" } else { "auto" };
+                            let mut development = development_root.join(".searchi/speech-runtime").join(backend);
+                            if cfg!(windows) { development = development.join("Release"); }
+                            let name = if cfg!(windows) { "searchi-speech-worker.exe" } else { "searchi-speech-worker" };
+                            let development = development.join(name);
+                            if cfg!(debug_assertions) && development.is_file() { development } else {
+                                app.path().resource_dir().unwrap_or_else(|_| directory.clone()).join("speech-runtime").join(name)
+                            }
+                        });
             let mut ignored = vec![directory.clone(), model_directory.clone()];
+            if let Some(parent) = speech_worker.parent().filter(|path| path.is_absolute()) { ignored.push(parent.to_path_buf()); }
             if let Some(parent) = worker.parent().filter(|path| path.is_absolute()) {
                 ignored.push(parent.to_path_buf());
             }
@@ -667,7 +679,9 @@ fn main() {
             ).map_err(std::io::Error::other)?);
             let semantic = Arc::new(
                 SemanticState::new(model_directory, worker, media_tools)
-                    .with_media_scratch(directory.join("MediaScratch")),
+                    .with_media_scratch(directory.join("MediaScratch"))
+                    .with_speech_assets(
+speech_worker, directory.join("SpeechModels")),
             );
             semantic.begin_automatic_setup(database.clone(), settings.value.cpu_threads);
             #[cfg(target_os = "macos")]