refactor(async): migrate from sync-blocking async execution to true async with unified AsyncHandler::spawn (#4502)

* feat: replace all tokio::spawn with unified AsyncHandler::spawn

- 🚀 Core Improvements:
  * Replace all tokio::spawn calls with AsyncHandler::spawn for unified Tauri async task management
  * Prioritize converting sync functions to async functions to reduce spawn usage
  * Use .await directly in async contexts instead of spawn

- 🔧 Major Changes:
  * core/hotkey.rs: Use AsyncHandler::spawn for hotkey callback functions
  * module/lightweight.rs: Async lightweight mode switching
  * feat/window.rs: Convert window operation functions to async, use .await internally
  * feat/proxy.rs, feat/clash.rs: Async proxy and mode switching functions
  * lib.rs: Window focus handling with AsyncHandler::spawn
  * core/tray/mod.rs: Complete async tray event handling

- ✨ Technical Advantages:
  * Unified task tracking and debugging capabilities (via tokio-trace feature)
  * Better error handling and task management
  * Consistency with Tauri runtime
  * Reduced async boundaries for better performance

- 🧪 Verification:
  * Compilation successful with 0 errors, 0 warnings
  * Maintains complete original functionality
  * Optimized async execution flow

* feat: complete tokio fs migration and replace tokio::spawn with AsyncHandler

🚀 Major achievements:
- Migrate 8 core modules from std::fs to tokio::fs
- Create 6 Send-safe wrapper functions using spawn_blocking pattern
- Replace all tokio::spawn calls with AsyncHandler::spawn for unified async task management
- Solve all 19 Send trait compilation errors through innovative spawn_blocking architecture

🔧 Core changes:
- config/profiles.rs: Add profiles_*_safe functions to handle Send trait constraints
- cmd/profile.rs: Update all Tauri commands to use Send-safe operations
- config/prfitem.rs: Replace append_item calls with profiles_append_item_safe
- utils/help.rs: Convert YAML operations to async (read_yaml, save_yaml)
- Multiple modules: Replace tokio::task::spawn_blocking with AsyncHandler::spawn_blocking

✅ Technical innovations:
- spawn_blocking wrapper pattern resolves parking_lot RwLock Send trait conflicts
- Maintain parking_lot performance while achieving Tauri async command compatibility
- Preserve backwards compatibility with gradual migration strategy

🎯 Results:
- Zero compilation errors
- Zero warnings
- All async file operations working correctly
- Complete Send trait compliance for Tauri commands

* feat: refactor app handle and command functions to use async/await for improved performance

* feat: update async handling in profiles and logging functions for improved error handling and performance

* fix: update TRACE_MINI_SIZE constant to improve task logging threshold

* fix(windows): convert service management functions to async for improved performance

* fix: convert service management functions to async for improved responsiveness

* fix(ubuntu): convert install and reinstall service functions to async for improved performance

* fix(linux): convert uninstall_service function to async for improved performance

* fix: convert uninstall_service call to async for improved performance

* fix: convert file and directory creation calls to async for improved performance

* fix: convert hotkey functions to async for improved responsiveness

* chore: update UPDATELOG.md for v2.4.1 with major improvements and performance optimizations

src-tauri/src/cmd/save_profile.rs

@@ -6,7 +6,7 @@ use crate::{
     utils::{dirs, logging::Type},
     wrap_err,
 };
-use std::fs;
+use tokio::fs;
 
 /// 保存profiles的配置
 #[tauri::command]
@@ -17,7 +17,7 @@ pub async fn save_profile_file(index: String, file_data: Option<String>) -> CmdR
 
     // 在异步操作前完成所有文件操作
     let (file_path, original_content, is_merge_file) = {
-        let profiles = Config::profiles();
+        let profiles = Config::profiles().await;
         let profiles_guard = profiles.latest_ref();
         let item = wrap_err!(profiles_guard.get_item(&index))?;
         // 确定是否为merge类型文件
@@ -30,7 +30,7 @@ pub async fn save_profile_file(index: String, file_data: Option<String>) -> CmdR
 
     // 保存新的配置文件
     let file_data = file_data.ok_or("file_data is None")?;
-    wrap_err!(fs::write(&file_path, &file_data))?;
+    wrap_err!(fs::write(&file_path, &file_data).await)?;
 
     let file_path_str = file_path.to_string_lossy().to_string();
     logging!(
@@ -88,7 +88,7 @@ pub async fn save_profile_file(index: String, file_data: Option<String>) -> CmdR
                     error_msg
                 );
                 // 恢复原始配置文件
-                wrap_err!(fs::write(&file_path, original_content))?;
+                wrap_err!(fs::write(&file_path, original_content).await)?;
                 // 发送合并文件专用错误通知
                 let result = (false, error_msg.clone());
                 crate::cmd::validate::handle_yaml_validation_notice(&result, "合并配置文件");
@@ -103,7 +103,7 @@ pub async fn save_profile_file(index: String, file_data: Option<String>) -> CmdR
                     e
                 );
                 // 恢复原始配置文件
-                wrap_err!(fs::write(&file_path, original_content))?;
+                wrap_err!(fs::write(&file_path, original_content).await)?;
                 return Err(e.to_string());
             }
         }
@@ -127,7 +127,7 @@ pub async fn save_profile_file(index: String, file_data: Option<String>) -> CmdR
                 error_msg
             );
             // 恢复原始配置文件
-            wrap_err!(fs::write(&file_path, original_content))?;
+            wrap_err!(fs::write(&file_path, original_content).await)?;
 
             // 智能判断错误类型
             let is_script_error = file_path_str.ends_with(".js")
@@ -177,7 +177,7 @@ pub async fn save_profile_file(index: String, file_data: Option<String>) -> CmdR
                 e
             );
             // 恢复原始配置文件
-            wrap_err!(fs::write(&file_path, original_content))?;
+            wrap_err!(fs::write(&file_path, original_content).await)?;
             Err(e.to_string())
         }
     }