feat: first cut on M0 - base structure of project

crates/bds-ui/src/platform/macos.rs

@@ -0,0 +1,10 @@
+// macOS lifecycle shim — objc2 hooks for NSApplicationDelegate.
+//
+// Handles:
+// - application:openFile: (Finder open)
+// - application:openURLs: (URL scheme handling)
+//
+// These will be forwarded as Message variants into the Iced event loop
+// via a channel-based subscription.
+//
+// Implementation deferred to M2 when the full message routing is in place.

crates/bds-ui/src/platform/menu.rs

@@ -0,0 +1,79 @@
+use iced::Subscription;
+use muda::{Menu, MenuEvent, MenuItem, PredefinedMenuItem, Submenu};
+
+use crate::app::Message;
+
+/// Build the native menu bar with standard application menus.
+pub fn build_menu_bar() -> Menu {
+    let menu = Menu::new();
+
+    // App menu (macOS only shows this as the app name)
+    let app_menu = Submenu::new("bDS", true);
+    let _ = app_menu.append(&PredefinedMenuItem::about(None, None));
+    let _ = app_menu.append(&PredefinedMenuItem::separator());
+    let _ = app_menu.append(&PredefinedMenuItem::services(None));
+    let _ = app_menu.append(&PredefinedMenuItem::separator());
+    let _ = app_menu.append(&PredefinedMenuItem::hide(None));
+    let _ = app_menu.append(&PredefinedMenuItem::hide_others(None));
+    let _ = app_menu.append(&PredefinedMenuItem::show_all(None));
+    let _ = app_menu.append(&PredefinedMenuItem::separator());
+    let _ = app_menu.append(&PredefinedMenuItem::quit(None));
+
+    // File menu
+    let file_menu = Submenu::new("File", true);
+    let _ = file_menu.append(&MenuItem::new("Open Project...", true, None));
+    let _ = file_menu.append(&PredefinedMenuItem::separator());
+    let _ = file_menu.append(&MenuItem::new("Save", true, None));
+    let _ = file_menu.append(&PredefinedMenuItem::close_window(None));
+
+    // Edit menu
+    let edit_menu = Submenu::new("Edit", true);
+    let _ = edit_menu.append(&PredefinedMenuItem::undo(None));
+    let _ = edit_menu.append(&PredefinedMenuItem::redo(None));
+    let _ = edit_menu.append(&PredefinedMenuItem::separator());
+    let _ = edit_menu.append(&PredefinedMenuItem::cut(None));
+    let _ = edit_menu.append(&PredefinedMenuItem::copy(None));
+    let _ = edit_menu.append(&PredefinedMenuItem::paste(None));
+    let _ = edit_menu.append(&PredefinedMenuItem::select_all(None));
+
+    // View menu
+    let view_menu = Submenu::new("View", true);
+    let _ = view_menu.append(&MenuItem::new("Toggle Sidebar", true, None));
+    let _ = view_menu.append(&PredefinedMenuItem::fullscreen(None));
+
+    // Window menu
+    let window_menu = Submenu::new("Window", true);
+    let _ = window_menu.append(&PredefinedMenuItem::minimize(None));
+    let _ = window_menu.append(&PredefinedMenuItem::maximize(None));
+
+    // Help menu
+    let help_menu = Submenu::new("Help", true);
+    let _ = help_menu.append(&MenuItem::new("bDS Help", true, None));
+
+    let _ = menu.append(&app_menu);
+    let _ = menu.append(&file_menu);
+    let _ = menu.append(&edit_menu);
+    let _ = menu.append(&view_menu);
+    let _ = menu.append(&window_menu);
+    let _ = menu.append(&help_menu);
+
+    // Initialize the menu on macOS
+    #[cfg(target_os = "macos")]
+    {
+        let _ = menu.init_for_nsapp();
+    }
+
+    menu
+}
+
+/// Iced subscription that polls muda menu events.
+pub fn menu_subscription() -> Subscription<Message> {
+    iced::event::listen_with(|_event, _status, _id| {
+        // Check for pending menu events
+        if let Ok(event) = MenuEvent::receiver().try_recv() {
+            Some(Message::MenuEvent(event.id))
+        } else {
+            None
+        }
+    })
+}

crates/bds-ui/src/platform/mod.rs

@@ -0,0 +1,4 @@
+pub mod menu;
+
+#[cfg(target_os = "macos")]
+pub mod macos;