The NavigationStack-level background wasn't enough: macOS draws its own
translucent material behind pushed navigation pages, and Form/List
containers draw a translucent scroll background on top of anything
placed behind them, so several pages kept the wallpaper-tinted look.
Bake the opaque background into SettingsFormContainer (covers all pages
built on it, pushed or not) and add opaqueSettingsFormBackground(),
which hides the container's scroll background before applying the
opaque one, to every macOS-reachable Form/List settings page: player
controls and its sub-editors, sidebar settings, edit source, legacy
data import, subscription/playlist import, customize home and its
shortcut style page, and the log viewer. Contributors, translators and
the remote control device page get the plain opaque background.
Claude-Session: https://claude.ai/code/session_0154KH8RAVAvm6iVanhmoW8o
TVSidebarDetailContainer now exposes a showsDismissButton flag instead of
always attaching a Done toolbar item. The button is only enabled where a
view can end up with no focusable element on its own — Device
Capabilities (informational rows) and the Import Playlists/Subscriptions
flows.
Wrap Contributors, Translators, Acknowledgements, and Device Capabilities
destinations in TVSidebarDetailContainer for the consistent sidebar look,
and make the Translators/Acknowledgements rows focusable on tvOS by
wrapping them in Buttons so the Menu remote button can pop the stack.
On tvOS, ContentUnavailableView inside a Group doesn't expand to fill
available space — it sizes to content and aligns top-leading. Add
.frame(maxWidth: .infinity, maxHeight: .infinity) to all instances
so they center correctly in their parent containers.
