feat(panel): add notch toggle to config.toml

Matches existing pattern for global_menu, systray, etc.
Set notch = false to hide center notch from panel.

src/utils/constants.py

@@ -21,6 +21,7 @@ DEFAULT = {
     "bluetooth": True,
     "date_time": True,
     "night_light_temperature": 4500,
+    "notch": True,
     "custom_mods": True,
     "keyboard_layouts": ["us"],
     "switcher_live_preview": True,

src/window/panel/main.py

@@ -140,7 +140,7 @@ class Panel(Window):
         # Create boxes and mount
         self.left_box = Box(name="window-left")
         self.notch = Notch()
-        self.center_box = Box(name="window-center", children=self.notch)
+        self.center_box = Box(name="window-center")
         self.right_box = Box(name="window-right", spacing=4, orientation="h")
 
         self.children = CenterBox(
@@ -271,6 +271,12 @@ class Panel(Window):
         if bluetooth_visible:
             self.bluetooth_indicator.update_state()
 
+        # Center (notch)
+        if config_data.get("notch", True):
+            self.center_box.children = [self.notch]
+        else:
+            self.center_box.children = []
+
         # Left
         left_children = []
         if config_data.get("imac_button", True):
@@ -319,6 +325,7 @@ class Panel(Window):
         keys = {
             "imac_button",
             "global_menu",
+            "notch",
             "custom_mods",
             "workspace_indicator",
             "systray",