fix(platform): own WSL setup and notification dispatch gates

nebula_app/src/ai_hook.rs

@@ -18,8 +18,6 @@ mod ordering;
 mod payload;
 mod protocol;
 pub(crate) mod remote;
-#[cfg(windows)]
-pub(crate) mod wsl;
 
 pub(crate) use event::CodexHookMode;
 pub use event::{

nebula_app/src/gpui_shell/terminal/session.rs

@@ -158,8 +158,7 @@ pub(super) fn local_options(
     // 身份契约必须最后写：它以环境表里 `WSLENV` 的现值为基准合并，才能同时
     // 保住上面那段的 cwd 上报条目。见 [`crate::agent_env`]。
     crate::agent_env::apply(&mut options.env, pane_id);
-    #[cfg(windows)]
-    crate::ai_hook::wsl::prepare(&mut options);
+    crate::platform::wsl_hooks::prepare(&mut options);
     options
 }
 

nebula_app/src/main.rs

@@ -256,7 +256,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         #[cfg(windows)]
         Some(Subcommands::SetupAi(options)) => {
             if let Some(distro) = &options.wsl {
-                std::process::exit(crate::ai_hook::wsl::setup_cli(
+                std::process::exit(crate::platform::wsl_hooks::setup_cli(
                     distro,
                     options.wsl_user.as_deref(),
                     options.remove,

nebula_app/src/notify.rs

@@ -517,14 +517,7 @@ fn spawn_actionable_toast(
     activation: Option<ToastActivation>,
     actions: Vec<crate::platform::notifications::ToastAction>,
 ) {
-    #[cfg(windows)]
-    crate::platform::notifications::toast_actionable(&title, &body, activation, actions);
-    #[cfg(not(windows))]
-    if let Err(error) = std::thread::Builder::new().name("pebrel-toast".into()).spawn(move || {
-        crate::platform::notifications::toast_actionable(&title, &body, activation, actions)
-    }) {
-        log::warn!("notify: failed to spawn toast thread: {error}");
-    }
+    crate::platform::notifications::dispatch(title, body, activation, actions);
 }
 
 #[cfg(test)]

nebula_app/src/platform/mod.rs

@@ -36,6 +36,7 @@ pub mod startup;
 pub(crate) mod update_installation;
 #[cfg(feature = "gpui-shell")]
 pub(crate) mod window_chrome;
+pub(crate) mod wsl_hooks;
 
 pub use capabilities::CAPABILITIES;
 

nebula_app/src/platform/notifications.rs

@@ -16,6 +16,25 @@ pub(crate) fn toast_clickable(title: &str, body: &str, activation: Option<ToastA
     toast_actionable(title, body, activation, Vec::new());
 }
 
+/// Dispatch owns the platform's worker and COM lifetime; notification policy
+/// remains in the application capability.
+pub(crate) fn dispatch(
+    title: String,
+    body: String,
+    activation: Option<ToastActivation>,
+    actions: Vec<ToastAction>,
+) {
+    #[cfg(windows)]
+    toast_actionable(&title, &body, activation, actions);
+    #[cfg(not(windows))]
+    if let Err(error) = std::thread::Builder::new()
+        .name("pebrel-toast".into())
+        .spawn(move || toast_actionable(&title, &body, activation, actions))
+    {
+        log::warn!("notify: failed to spawn toast thread: {error}");
+    }
+}
+
 #[cfg(target_os = "macos")]
 static MACOS_READY: std::sync::OnceLock<bool> = std::sync::OnceLock::new();
 

nebula_app/src/platform/wsl_hooks.rs

@@ -0,0 +1,8 @@
+//! Guest hook setup is a Windows transport capability. Provider policy stays in ai_hook.
+#[cfg(windows)]
+mod windows;
+#[cfg(windows)]
+pub(crate) use windows::{prepare, setup_cli};
+
+#[cfg(not(windows))]
+pub(crate) fn prepare(_options: &mut nebula_terminal::tty::Options) {}

nebula_app/src/platform/wsl_hooks/windows.rs

@@ -13,7 +13,7 @@ use std::time::{Duration, Instant};
 use nebula_terminal::tty;
 use serde_json::json;
 
-use super::remote::{self, Action, Snapshot};
+use crate::ai_hook::remote::{self, Action, Snapshot};
 
 const BUDGET: Duration = Duration::from_secs(8);
 const MAX_OUTPUT: u64 = 20 * 1024 * 1024;