Add a navigation history so pages can be walked back and forward.
- nav.rs: a back/forward stack of NavEntry (home, album, artist,
settings); record() on fresh navigation, go_back/go_forward to walk it
- NavButtons: a [<] [>] pair styled like the Discover tab group; inline
beside the Discover tabs and in place of the per-page Back button on
album, artist and settings views
- All navigation routes through Rust (open-album/-artist record entries;
the gear and header menu use NavState.request-settings) so the history
stays accurate; back/forward re-apply entries, re-loading entity pages
- AppShell listens for the mouse back/forward buttons
- can-back / can-forward drive the buttons' enabled state
Also in this round:
- Album header description: render a pre-truncated short string so it
wraps to a couple of lines instead of overflowing the header; the full
text stays in the Read-more modal
- Header queue button uses an ordered-list icon (the previous one read
as a playlist)
cc
Introduce the Settings page, reachable from the Discover gear and the
header menu. Two sub-sections backed by the existing UI-agnostic stores.
- Audio panel: backend, output device and sample-rate dropdowns;
toggles for exclusive mode, DAC passthrough, PipeWire force
bit-perfect, gapless, normalization and quality fallback
- Playback panel: autoplay mode, show context icon, remember session
and resume position
- settings.rs controller owns AudioSettingsStore + PlaybackPreferencesStore
at the shared global path; persists changes and applies audio ones to
the live Player (reload_settings, plus reinit_device for routing-
critical changes); a backend switch re-enumerates output devices
- QbzToggle (switch) and QbzSelect (PopupWindow dropdown) primitives,
SettingRow layout helper, chevron-down icon
- SettingsState global, ContentView::settings, settings-bool /
settings-select callbacks wired through the shell
cc
vicrodh