feat: add config directory override support for WSL

- Add persistent app settings with custom Claude Code and Codex config directories
- Add config directory override UI in settings modal with manual input, browse, and reset options
- Integrate tauri-plugin-dialog for native directory picker
- Support WSL and other special environments where config paths need manual specification

Changes:
- settings.rs: Implement settings load/save and directory override logic
- SettingsModal: Add config directory override UI components
- API: Add get_config_dir and pick_directory commands

src-tauri/src/lib.rs

@@ -2,10 +2,11 @@ mod app_config;
 mod codex_config;
 mod commands;
 mod config;
-mod vscode;
 mod migration;
 mod provider;
+mod settings;
 mod store;
+mod vscode;
 
 use store::AppState;
 #[cfg(target_os = "macos")]
@@ -246,6 +247,7 @@ pub fn run() {
             _ => {}
         })
         .plugin(tauri_plugin_process::init())
+        .plugin(tauri_plugin_dialog::init())
         .plugin(tauri_plugin_opener::init())
         .setup(|app| {
             // 注册 Updater 插件（桌面端）
@@ -351,7 +353,9 @@ pub fn run() {
             commands::get_claude_config_status,
             commands::get_config_status,
             commands::get_claude_code_config_path,
+            commands::get_config_dir,
             commands::open_config_folder,
+            commands::pick_directory,
             commands::open_external,
             commands::get_app_config_path,
             commands::open_app_config_folder,