feat(macos): add native Alacritty panes

src-tauri/Cargo.toml

@@ -53,9 +53,12 @@ wmi = "0.18"
 windows-core = "=0.61.2"
 windows-sys = { version = "0.61", features = [
     "Win32_Foundation",
+    "Win32_Graphics_Gdi",
     "Win32_Security",
     "Win32_System_JobObjects",
     "Win32_System_Threading",
+    "Win32_UI_Input_KeyboardAndMouse",
+    "Win32_UI_WindowsAndMessaging",
 ] }
 # Already in the lock transitively via tauri; declared directly so the
 # ICoreWebView2Settings3 call has a supported path. Must stay on the same

src-tauri/src/agents.rs

@@ -13,6 +13,10 @@ pub struct AgentInfo {
 
 /// Recognised out of the box; always probed, whatever the caller asks for.
 /// Mirrors `BUILTIN_AGENTS` in src/lib/agent-catalog.ts.
+#[cfg(any(target_os = "windows", target_os = "macos"))]
+pub(crate) const BUILTIN_AGENTS: [&str; 6] =
+    ["claude", "codex", "opencode", "agy", "gemini", "alacritty"];
+#[cfg(not(any(target_os = "windows", target_os = "macos")))]
 pub(crate) const BUILTIN_AGENTS: [&str; 5] = ["claude", "codex", "opencode", "agy", "gemini"];
 
 /// Upper bound on a probed name; mirrors `PROBE_NAME_MAX` in agent-catalog.ts.
@@ -43,6 +47,12 @@ pub(crate) fn probe_names(requested: Vec<String>) -> Vec<String> {
         .map(|name| (*name).to_string())
         .collect();
     for name in requested {
+        // Alacritty is a native pane renderer, not an agent command. Keep it
+        // out of platforms where the native embedding backend is a deliberate
+        // unsupported stub.
+        if cfg!(not(any(target_os = "windows", target_os = "macos"))) && name == "alacritty" {
+            continue;
+        }
         if is_probe_safe(&name) && !names.iter().any(|existing| *existing == name) {
             names.push(name);
         }

src-tauri/src/lib.rs

@@ -6,6 +6,7 @@ mod links;
 mod menu;
 mod menu_registry;
 mod migrate;
+mod native_terminal;
 mod platform;
 mod prompt_assets;
 mod pty;
@@ -20,8 +21,13 @@ struct QuitState {
 }
 
 #[tauri::command]
-fn confirm_quit(app: tauri::AppHandle, state: tauri::State<'_, QuitState>) {
+fn confirm_quit(
+    app: tauri::AppHandle,
+    state: tauri::State<'_, QuitState>,
+    native: tauri::State<'_, native_terminal::NativeTerminalState>,
+) {
     state.confirmed.store(true, Ordering::SeqCst);
+    native.terminate_all();
     app.exit(0);
 }
 
@@ -46,6 +52,7 @@ pub fn run() {
     builder
         .manage(pty::PtyState::default())
         .manage(coordinator::WindowCoordinator::default())
+        .manage(native_terminal::NativeTerminalState::default())
         .manage(QuitState::default())
         .setup(|app| {
             // Before anything reads the store: the frontend loads settings
@@ -78,6 +85,13 @@ pub fn run() {
             images::scan_workspace_favicon,
             links::resolve_paths,
             links::open_editor,
+            native_terminal::spawn_alacritty,
+            native_terminal::apply_alacritty_appearance,
+            native_terminal::perform_alacritty_action,
+            native_terminal::update_alacritty,
+            native_terminal::focus_alacritty,
+            native_terminal::set_alacritty_occluded,
+            native_terminal::kill_alacritty,
             confirm_quit
         ])
         .build(tauri::generate_context!())