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.
tvOS cannot open URLs in a browser, so the Community section
(GitHub/Discord) is omitted and Acknowledgements dependencies
render as plain text rather than tappable buttons.
- Replace sheets with navigationDestination for Add/Edit Source on tvOS
(tvOS sheets have fixed size that doesn't fit the content)
- Fix focused cell clipping by replacing TVSettingsContainer's frame-based
layout with safeAreaInset, matching the main settings view pattern
- Use standard List with .listStyle(.grouped) for Sources on tvOS
- Add sidebar icons and titles to TVSettingsContainer for all settings
subviews, utilizing the left column space
- Remove redundant large navigation titles on tvOS (shown in sidebar)
- Move Edit Source Save button from toolbar into form above Delete button
for better tvOS focus navigation
