feat: add common config snippet management system

- Add settings module for managing common configuration snippets
- Implement UI for creating, editing, and deleting snippets
- Add tauri-plugin-fs for file operations
- Replace co-authored setting with flexible snippet system
- Enable users to define custom config snippets for frequently used settings

src-tauri/src/codex_config.rs

@@ -10,6 +10,10 @@ use std::path::Path;
 
 /// 获取 Codex 配置目录路径
 pub fn get_codex_config_dir() -> PathBuf {
+    if let Some(custom) = crate::settings::get_codex_override_dir() {
+        return custom;
+    }
+
     dirs::home_dir().expect("无法获取用户主目录").join(".codex")
 }
 

src-tauri/src/commands.rs

@@ -483,6 +483,26 @@ pub async fn get_claude_code_config_path() -> Result<String, String> {
     Ok(get_claude_settings_path().to_string_lossy().to_string())
 }
 
+/// 获取当前生效的配置目录
+#[tauri::command]
+pub async fn get_config_dir(
+    app_type: Option<AppType>,
+    app: Option<String>,
+    appType: Option<String>,
+) -> Result<String, String> {
+    let app = app_type
+        .or_else(|| app.as_deref().map(|s| s.into()))
+        .or_else(|| appType.as_deref().map(|s| s.into()))
+        .unwrap_or(AppType::Claude);
+
+    let dir = match app {
+        AppType::Claude => crate::config::get_claude_config_dir(),
+        AppType::Codex => crate::codex_config::get_codex_config_dir(),
+    };
+
+    Ok(dir.to_string_lossy().to_string())
+}
+
 /// 打开配置文件夹
 /// 兼容两种参数：`app_type`（推荐）或 `app`（字符串）
 #[tauri::command]
@@ -566,21 +586,15 @@ pub async fn open_app_config_folder(handle: tauri::AppHandle) -> Result<bool, St
 
 /// 获取设置
 #[tauri::command]
-pub async fn get_settings(_state: State<'_, AppState>) -> Result<serde_json::Value, String> {
-    // 暂时返回默认设置：系统托盘（菜单栏）显示开关
-    Ok(serde_json::json!({
-        "showInTray": true
-    }))
+pub async fn get_settings() -> Result<serde_json::Value, String> {
+    serde_json::to_value(crate::settings::get_settings())
+        .map_err(|e| format!("序列化设置失败: {}", e))
 }
 
 /// 保存设置
 #[tauri::command]
-pub async fn save_settings(
-    _state: State<'_, AppState>,
-    settings: serde_json::Value,
-) -> Result<bool, String> {
-    // TODO: 实现系统托盘显示开关的保存与应用（显示/隐藏菜单栏托盘图标）
-    log::info!("保存设置: {:?}", settings);
+pub async fn save_settings(settings: crate::settings::AppSettings) -> Result<bool, String> {
+    crate::settings::update_settings(settings)?;
     Ok(true)
 }
 

src-tauri/src/config.rs

@@ -6,6 +6,10 @@ use std::path::{Path, PathBuf};
 
 /// 获取 Claude Code 配置目录路径
 pub fn get_claude_config_dir() -> PathBuf {
+    if let Some(custom) = crate::settings::get_claude_override_dir() {
+        return custom;
+    }
+
     dirs::home_dir()
         .expect("无法获取用户主目录")
         .join(".claude")

src-tauri/src/lib.rs

@@ -4,6 +4,7 @@ mod commands;
 mod config;
 mod migration;
 mod provider;
+mod settings;
 mod store;
 
 use store::AppState;
@@ -242,6 +243,7 @@ pub fn run() {
         })
         .plugin(tauri_plugin_process::init())
         .plugin(tauri_plugin_opener::init())
+        .plugin(tauri_plugin_dialog::init())
         .setup(|app| {
             // 注册 Updater 插件（桌面端）
             #[cfg(desktop)]
@@ -346,6 +348,7 @@ 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::open_external,
             commands::get_app_config_path,

src-tauri/src/settings.rs

@@ -0,0 +1,147 @@
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::PathBuf;
+use std::sync::{OnceLock, RwLock};
+
+/// 应用设置结构，允许覆盖默认配置目录
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct AppSettings {
+    #[serde(default = "default_show_in_tray")]
+    pub show_in_tray: bool,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub claude_config_dir: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub codex_config_dir: Option<String>,
+}
+
+fn default_show_in_tray() -> bool {
+    true
+}
+
+impl Default for AppSettings {
+    fn default() -> Self {
+        Self {
+            show_in_tray: true,
+            claude_config_dir: None,
+            codex_config_dir: None,
+        }
+    }
+}
+
+impl AppSettings {
+    fn settings_path() -> PathBuf {
+        crate::config::get_app_config_dir().join("settings.json")
+    }
+
+    fn normalize_paths(&mut self) {
+        self.claude_config_dir = self
+            .claude_config_dir
+            .as_ref()
+            .map(|s| s.trim())
+            .filter(|s| !s.is_empty())
+            .map(|s| s.to_string());
+
+        self.codex_config_dir = self
+            .codex_config_dir
+            .as_ref()
+            .map(|s| s.trim())
+            .filter(|s| !s.is_empty())
+            .map(|s| s.to_string());
+    }
+
+    pub fn load() -> Self {
+        let path = Self::settings_path();
+        if let Ok(content) = fs::read_to_string(&path) {
+            match serde_json::from_str::<AppSettings>(&content) {
+                Ok(mut settings) => {
+                    settings.normalize_paths();
+                    settings
+                }
+                Err(err) => {
+                    log::warn!(
+                        "解析设置文件失败，将使用默认设置。路径: {}, 错误: {}",
+                        path.display(),
+                        err
+                    );
+                    Self::default()
+                }
+            }
+        } else {
+            Self::default()
+        }
+    }
+
+    pub fn save(&self) -> Result<(), String> {
+        let mut normalized = self.clone();
+        normalized.normalize_paths();
+        let path = Self::settings_path();
+
+        if let Some(parent) = path.parent() {
+            fs::create_dir_all(parent)
+                .map_err(|e| format!("创建设置目录失败: {}", e))?;
+        }
+
+        let json = serde_json::to_string_pretty(&normalized)
+            .map_err(|e| format!("序列化设置失败: {}", e))?;
+        fs::write(&path, json).map_err(|e| format!("写入设置失败: {}", e))?;
+        Ok(())
+    }
+}
+
+fn settings_store() -> &'static RwLock<AppSettings> {
+    static STORE: OnceLock<RwLock<AppSettings>> = OnceLock::new();
+    STORE.get_or_init(|| RwLock::new(AppSettings::load()))
+}
+
+fn resolve_override_path(raw: &str) -> PathBuf {
+    if raw == "~" {
+        if let Some(home) = dirs::home_dir() {
+            return home;
+        }
+    } else if let Some(stripped) = raw.strip_prefix("~/") {
+        if let Some(home) = dirs::home_dir() {
+            return home.join(stripped);
+        }
+    } else if let Some(stripped) = raw.strip_prefix("~\\") {
+        if let Some(home) = dirs::home_dir() {
+            return home.join(stripped);
+        }
+    }
+
+    PathBuf::from(raw)
+}
+
+pub fn get_settings() -> AppSettings {
+    settings_store()
+        .read()
+        .expect("读取设置锁失败")
+        .clone()
+}
+
+pub fn update_settings(mut new_settings: AppSettings) -> Result<(), String> {
+    new_settings.normalize_paths();
+    new_settings.save()?;
+
+    let mut guard = settings_store()
+        .write()
+        .expect("写入设置锁失败");
+    *guard = new_settings;
+    Ok(())
+}
+
+pub fn get_claude_override_dir() -> Option<PathBuf> {
+    let settings = settings_store().read().ok()?;
+    settings
+        .claude_config_dir
+        .as_ref()
+        .map(|p| resolve_override_path(p))
+}
+
+pub fn get_codex_override_dir() -> Option<PathBuf> {
+    let settings = settings_store().read().ok()?;
+    settings
+        .codex_config_dir
+        .as_ref()
+        .map(|p| resolve_override_path(p))
+}