feat: persist model selection

src-tauri/src/commands/fs.rs

@@ -8,6 +8,7 @@ use tauri_plugin_store::StoreExt;
 
 const STORE_PATH: &str = "store.json";
 const KEY_LAST_PROJECT: &str = "last_project_path";
+const KEY_SELECTED_MODEL: &str = "selected_model";
 
 // -----------------------------------------------------------------------------
 // Helper Functions
@@ -125,6 +126,31 @@ pub async fn get_current_project(
     Ok(None)
 }
 
+#[tauri::command]
+pub async fn get_model_preference(app: AppHandle) -> Result<Option<String>, String> {
+    let store = app
+        .store(STORE_PATH)
+        .map_err(|e| format!("Failed to access store: {}", e))?;
+
+    if let Some(val) = store.get(KEY_SELECTED_MODEL) {
+        if let Some(model) = val.as_str() {
+            return Ok(Some(model.to_string()));
+        }
+    }
+    Ok(None)
+}
+
+#[tauri::command]
+pub async fn set_model_preference(app: AppHandle, model: String) -> Result<(), String> {
+    let store = app
+        .store(STORE_PATH)
+        .map_err(|e| format!("Failed to access store: {}", e))?;
+
+    store.set(KEY_SELECTED_MODEL, json!(model));
+    let _ = store.save();
+    Ok(())
+}
+
 #[tauri::command]
 pub async fn read_file(path: String, state: State<'_, SessionState>) -> Result<String, String> {
     let full_path = resolve_path(&state, &path)?;