Add a Custom swatch to the appearance settings accent color grid,
backed by a hex value stored in settings (synced via iCloud like the
rest). iOS uses the native ColorPicker wheel; macOS uses a circular
swatch that opens NSColorPanel, since the SwiftUI color well looks out
of place among the circles. All accent consumers now read the resolved
color through SettingsManager.resolvedAccentColor.
The indigo preset is retired from the grid but kept in the enum, so
users who selected it keep their color until they pick another one.
Claude-Session: https://claude.ai/code/session_0154KH8RAVAvm6iVanhmoW8o
Place the view options control on the leading (`.navigation`) edge on
macOS so it is consistently the first/leftmost toolbar button across all
views, instead of sitting on the right next to the search field in
search views and on the left in non-search views.
Each affected view gains a computed `viewOptionsPlacement` (`.navigation`
on macOS, `.primaryAction` elsewhere) so iOS/iPadOS/tvOS keep the
button trailing. Search-style views (Search, InstanceBrowse) declare the
view options item first so it renders left of the search-filters button;
their flexible spacer is kept to right-pin the search field. Channel's
fixed spacer between view options and the channel menu is now iOS-only.
Match the global Search view by pinning the searchable field and
trailing buttons to the right edge on macOS 26 via a flexible
ToolbarSpacer at .primaryAction. Applied to History, Bookmarks,
Manage Channels, Downloads, Instance Browse, and PeerTube Explore.
In History, the clear-history item moves from .automatic to
.primaryAction so it groups with the other trailing controls.
Color.accentColor and .foregroundStyle(.tint) resolve to the asset
catalog accent on macOS, so Home shortcut cards, section header
links, the Subscriptions "All channels" header, and the Downloads
per-channel group headers stayed blue when the user picked a
different accent. Read the color from SettingsManager and apply it
directly, matching the pattern already used for the Play button.
Proxied thumbnail URLs from Invidious/Piped/Yattee server expire over
time. Two paths were left holding stale URLs: the Video Info carousel
kept the original list copy even after fresh details arrived, and
downloaded videos rendered from the remote URL snapshot taken at
download time while the local thumbnail on disk was ignored.
Evict stale URLs from the Nuke cache when fresh video details load,
pass the fresh details through to the videoCard thumbnail, and resolve
downloads' thumbnails from the local file when localThumbnailPath is
set.
