feat: panel on focused monitor, wallpaper on all others

Panel without set_monitor so compositor places it on focused output.
Wallpaper windows on TOP layer on all monitors (below OVERLAY panel).
Transparent confirmation dialog background.

src/moonset/main.py

@@ -58,7 +58,6 @@ class MoonsetApp(Gtk.Application):
 
     def __init__(self) -> None:
         super().__init__(application_id="dev.moonarch.moonset")
-        self._windows: list[PanelWindow] = []
 
     def do_activate(self) -> None:
         """Create and present power menu windows on all monitors."""
@@ -73,17 +72,24 @@ class MoonsetApp(Gtk.Application):
         config = load_config()
         bg_path = resolve_background_path(config)
 
-        # Panel window on every monitor — keyboard exclusive on all so
-        # the focused monitor always captures input
+        # Panel on focused output (no set_monitor → compositor picks focused)
+        panel = PanelWindow(bg_path=bg_path, application=self)
+        if HAS_LAYER_SHELL:
+            self._setup_layer_shell(panel, keyboard=True)
+        panel.present()
+
+        # Wallpaper on all other monitors
         monitors = display.get_monitors()
         for i in range(monitors.get_n_items()):
             monitor = monitors.get_item(i)
-            panel = PanelWindow(bg_path=bg_path, application=self)
+            wallpaper = WallpaperWindow(bg_path=bg_path, application=self)
             if HAS_LAYER_SHELL:
-                self._setup_layer_shell(panel, keyboard=True)
-                Gtk4LayerShell.set_monitor(panel, monitor)
-            panel.present()
-            self._windows.append(panel)
+                self._setup_layer_shell(
+                    wallpaper, keyboard=False,
+                    layer=Gtk4LayerShell.Layer.TOP,
+                )
+                Gtk4LayerShell.set_monitor(wallpaper, monitor)
+            wallpaper.present()
 
     def _load_css(self, display: Gdk.Display) -> None:
         """Load the CSS stylesheet for the power menu."""
@@ -97,11 +103,14 @@ class MoonsetApp(Gtk.Application):
         )
 
     def _setup_layer_shell(
-        self, window: Gtk.Window, keyboard: bool = False
+        self, window: Gtk.Window, keyboard: bool = False,
+        layer: int | None = None,
     ) -> None:
-        """Configure gtk4-layer-shell for fullscreen OVERLAY display."""
+        """Configure gtk4-layer-shell for fullscreen display."""
         Gtk4LayerShell.init_for_window(window)
-        Gtk4LayerShell.set_layer(window, Gtk4LayerShell.Layer.OVERLAY)
+        Gtk4LayerShell.set_layer(
+            window, layer if layer is not None else Gtk4LayerShell.Layer.OVERLAY
+        )
         Gtk4LayerShell.set_exclusive_zone(window, -1)
         if keyboard:
             Gtk4LayerShell.set_keyboard_mode(

src/moonset/style.css

@@ -61,8 +61,7 @@ window.wallpaper {
 /* Confirmation box below action buttons */
 .confirm-box {
     padding: 16px 24px;
-    border-radius: 12px;
-    background-color: @theme_base_color;
+    background-color: transparent;
 }
 
 /* Confirmation prompt text */