feat!: remove signal crate for macOS and windows (#7827)

* feat!: remove signal crate

* fix: clippy

* feat(signal): limit the shutdown signal crate to Linux

Upstream now covers termination and session-end events on Windows and
macOS, but Linux has no equivalent, so pre-shutdown cleanup there still
depends on listening for SIGTERM/SIGINT/SIGHUP (#7827). Restore
clash-verge-signal behind a target_os = "linux" gate instead of dropping
it: the dependency lives in a linux-only target section, the crate root
carries an English Linux-only rationale and compiles to nothing
elsewhere, and the Windows backend is gone.

register() now takes the quit flow's unit future: the latch serializes
in-flight cleanups and releases after each attempt, leaving the
exit-or-cancel decision to the quit flow itself.

Verified with cargo check and clippy for aarch64-unknown-linux-gnu, and
cargo check on the host where the crate compiles empty.

src-tauri/Cargo.toml

@@ -35,7 +35,6 @@ tauri-build = { version = "2.7.1", features = [] }
 clash-verge-draft = { workspace = true }
 clash-verge-media-unlock = { workspace = true }
 clash-verge-logging = { workspace = true }
-clash-verge-signal = { workspace = true }
 clash-verge-i18n = { workspace = true }
 clash-verge-limiter = { workspace = true }
 tauri-plugin-clash-verge-sysinfo = { workspace = true }
@@ -116,6 +115,10 @@ specta-typescript = "=0.0.12"
 [target.'cfg(unix)'.dependencies]
 libc = "0.2.190"
 
+[target.'cfg(target_os = "linux")'.dependencies]
+# Upstream has no session-end signal support on Linux; see crates/clash-verge-signal.
+clash-verge-signal = { workspace = true }
+
 [target.'cfg(target_os = "macos")'.dependencies]
 tauri-plugin-wdio-webdriver = { version = "=1.4.0", optional = true }
 objc2 = "0.6.5"

src-tauri/src/feat/window.rs

@@ -130,7 +130,7 @@ pub async fn open_or_close_dashboard() {
     logging!(info, Type::Window, "Window toggle result: {result:?}");
 }
 
-pub async fn quit() -> clash_verge_signal::ShutdownOutcome {
+pub async fn quit() {
     logging!(debug, Type::System, "启动退出流程");
     // 设置退出标志
     handle::Handle::global().set_is_exiting();
@@ -165,13 +165,11 @@ pub async fn quit() -> clash_verge_signal::ShutdownOutcome {
             NoticeStatus::AppQuitCoreStopFailed,
             cleanup_result.stop_error.unwrap_or_default(),
         );
-        return clash_verge_signal::ShutdownOutcome::Canceled;
     }
 
     utils::server::shutdown_embedded_server();
     let app_handle = handle::Handle::app_handle();
     app_handle.exit(if cleanup_result.all_success { 0 } else { 1 });
-    clash_verge_signal::ShutdownOutcome::Committed
 }
 
 pub async fn clean_async() -> CleanupResult {

src-tauri/src/lib.rs

@@ -230,6 +230,7 @@ pub fn run() -> std::process::ExitCode {
             if let Err(panic) = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
                 resolve::resolve_setup_async();
                 resolve::resolve_setup_sync();
+                #[cfg(target_os = "linux")]
                 resolve::init_signal();
             })) {
                 log_setup_panic("window-core", panic);

src-tauri/src/utils/resolve/mod.rs

@@ -20,7 +20,6 @@ use crate::{
     utils::{init, server, window_manager::WindowManager},
 };
 use clash_verge_logging::{Type, logging, logging_error};
-use clash_verge_signal;
 
 #[cfg(target_os = "macos")]
 pub mod dns;
@@ -189,6 +188,8 @@ async fn init_silent_updater() {
     logging!(info, Type::Setup, "Silent updater initialized");
 }
 
+// Upstream has no session-end signal support on Linux; see crates/clash-verge-signal.
+#[cfg(target_os = "linux")]
 pub(crate) fn init_signal() {
     logging!(debug, Type::Setup, "Initializing signal handlers...");
     clash_verge_signal::register(feat::quit);

src-tauri/src/utils/server.rs

@@ -39,8 +39,6 @@ static INSTANCE_LOCK: OnceLock<std::fs::File> = OnceLock::new();
 const PAC_INITIAL_AVAILABLE: bool = false;
 static PAC_AVAILABLE: AtomicBool = AtomicBool::new(PAC_INITIAL_AVAILABLE);
 static COMMANDS_READY: AtomicBool = AtomicBool::new(false);
-#[cfg(feature = "verge-dev")]
-static DEV_QUIT_REQUESTED: AtomicBool = AtomicBool::new(false);
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum SingletonDisposition {
@@ -164,55 +162,12 @@ fn instance_auth(token: String) -> impl warp::Filter<Extract = (), Error = warp:
         .untuple_one()
 }
 
-#[cfg(feature = "verge-dev")]
-fn dev_quit_route<F>(
-    token: String,
-    commands_ready: &'static AtomicBool,
-    quit_requested: &'static AtomicBool,
-    trigger: F,
-) -> impl warp::Filter<Extract = (impl warp::Reply,), Error = warp::Rejection> + Clone
-where
-    F: Fn() + Clone + Send + Sync + 'static,
-{
-    instance_auth(token)
-        .and(warp::path!("commands" / "dev" / "quit"))
-        .and(warp::post())
-        .and_then(move || {
-            let trigger = trigger.clone();
-            async move {
-                if !commands_ready.load(Ordering::Acquire) {
-                    return Ok::<_, warp::Rejection>(warp::reply::with_status(
-                        String::from("starting"),
-                        warp::http::StatusCode::SERVICE_UNAVAILABLE,
-                    ));
-                }
-                if quit_requested
-                    .compare_exchange(false, true, Ordering::AcqRel, Ordering::Acquire)
-                    .is_ok()
-                {
-                    trigger();
-                }
-                Ok(warp::reply::with_status(
-                    String::from("accepted"),
-                    warp::http::StatusCode::ACCEPTED,
-                ))
-            }
-        })
-}
-
-#[cfg(feature = "verge-dev")]
-fn release_dev_quit_latch(quit_requested: &AtomicBool, outcome: clash_verge_signal::ShutdownOutcome) {
-    if matches!(outcome, clash_verge_signal::ShutdownOutcome::Canceled) {
-        quit_requested.store(false, Ordering::Release);
-    }
-}
-
 fn start_embedded_server(listener: tokio::net::TcpListener, token: String) {
     let (shutdown_tx, shutdown_rx) = oneshot::channel();
     let _ = SHUTDOWN_SENDER.set(Mutex::new(Some(shutdown_tx)));
 
     #[cfg(feature = "verge-dev")]
-    let auth = instance_auth(token.clone());
+    let auth = instance_auth(token);
     #[cfg(not(feature = "verge-dev"))]
     let auth = instance_auth(token);
 
@@ -278,12 +233,6 @@ fn start_embedded_server(listener: tokio::net::TcpListener, token: String) {
         });
 
     let commands = auth.clone().and(visible).or(auth.and(scheme)).or(pac);
-    #[cfg(feature = "verge-dev")]
-    let commands = commands.or(dev_quit_route(token, &COMMANDS_READY, &DEV_QUIT_REQUESTED, || {
-        AsyncHandler::spawn(|| async {
-            release_dev_quit_latch(&DEV_QUIT_REQUESTED, crate::feat::quit().await);
-        });
-    }));
     AsyncHandler::spawn(move || async move {
         warp::serve(commands)
             .incoming(listener)