refactor: Replace tokio::spawn with AsyncHandler::spawn for better task management

- Replace direct tokio::spawn calls with AsyncHandler::spawn across multiple modules
- Improves task lifecycle management and error handling consistency
- Affected files:
  - src-tauri/src/cmd/network.rs
  - src-tauri/src/core/core.rs
  - src-tauri/src/core/event_driven_proxy.rs
  - src-tauri/src/enhance/tun.rs
  - src-tauri/src/ipc/logs.rs
  - src-tauri/src/ipc/memory.rs
  - src-tauri/src/ipc/monitor.rs
  - src-tauri/src/ipc/traffic.rs
  - src-tauri/src/utils/network.rs
  - src-tauri/src/utils/resolve.rs

This change provides better control over async task spawning and helps prevent
potential issues with unmanaged background tasks.

src-tauri/src/ipc/monitor.rs

@@ -4,6 +4,7 @@ use tokio::{sync::RwLock, time::Duration};
 
 use crate::{
     logging,
+    process::AsyncHandler,
     utils::{dirs::ipc_path, logging::Type},
 };
 
@@ -55,7 +56,7 @@ where
         let endpoint_clone = endpoint.clone();
 
         // Start the monitoring task
-        tokio::spawn(async move {
+        AsyncHandler::spawn(move || async move {
             Self::streaming_task(monitor_current, endpoint_clone, timeout, retry_interval).await;
         });