The MenuBarExtra panel's default collectionBehavior included
canJoinAllSpaces, so the bar could be visible on every Space and
display at once. The WindowAppearanceForcer bridge now strips
canJoinAllSpaces and applies moveToActiveSpace.
Panel and Settings window placement also keyed off the key-window
screen (NSScreen.main / window.center()) rather than the display where
the status item was clicked. Both now anchor to the screen under the
cursor at click time via the pure BarScreenPicker helper, covered by
new ccs-bar-check geometry assertions.
Closes#1502Closes#1503
Move Settings out of the menu-bar popover into a standalone resizable AppKit
window so clicking it no longer steals focus and dismisses the bar (the .sheet
inside MenuBarExtra(.window) was the root cause). Force the actual NSWindow
appearance (aqua/darkAqua/system) on both the popover and the settings window
so Light/Dark visibly flips materials and semantic colors, not just custom
tokens. Replace the fragile popover quit dialog with an inline two-step
arm/confirm. Widen the dropdown and increase spacing/type for readability. Fill
the settings window responsively and make Done close it via the window
controller (dismiss() is a no-op in a hosted NSWindow).
Tam Nhu Tran