logiguard fork v3: full patch set on verified 8c74db0 tree

Includes prior-session patches (carry forward so the app compiles):
  - crates/gpui/build.rs: cross-compile manifest fix
  - crates/gpui/src/platform.rs: PlatformWindow::activate_with_token trait method
  - crates/gpui/src/window.rs: Window::activate_with_token public API
  - crates/gpui_linux/src/linux/wayland/window.rs: WaylandWindow::activate_with_token + activate() keyboard-serial fix

Plus the focus-serial fix:
  - serial.rs: SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; latest_serial_of()

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/gpui_web/src/keyboard.rs

@@ -0,0 +1,19 @@
+use gpui::PlatformKeyboardLayout;
+
+pub struct WebKeyboardLayout;
+
+impl WebKeyboardLayout {
+    pub fn new() -> Self {
+        WebKeyboardLayout
+    }
+}
+
+impl PlatformKeyboardLayout for WebKeyboardLayout {
+    fn id(&self) -> &str {
+        "us"
+    }
+
+    fn name(&self) -> &str {
+        "US"
+    }
+}