Shell & navigation:
- Three-state sidebar (open/mini/closed); collapse cycles via header button.
- Section nav as right-flyouts (sidebar) + compact header nav (closed) +
full header tabs (nav-in-sidebar off), via a shared HeaderMenuOverlay.
- Collapsed-folder right-flyout popup (max 4 + scrollbar), Rust-populated.
- Thin auto-hiding sidebar scrollbar pinned to the edge (Flickable, drag-safe).
- Slack-style bezel: rounded inset content panel over surface-card chrome.
- Header restructure: nav buttons, window-centered search, app menu.
Themes & components:
- Live theme switching: Dark / OLED Black / Tokyo Night / System (std-widgets).
- SegmentedTabBar (Discovery-style) with count badges for Library + Local Library.
- MP3 quality-badge tier (format-first classification) across badges.
- QbzSelect (Group/Sort) trimmed 20px.
Behavior fixes:
- Artist + Local Library Folder cover art now reach the rendered (visible/
grouped) models, not just the source set.
- Favorites Playlists/Labels random buttons.
- Playlist track click plays from the clicked track in visible order.
- Dropdown idle-close pauses while the cursor rests on the menu.
cc
The four header nav tabs each owned a PopupWindow for their dropdown.
A PopupWindow grabs the pointer while open, so hovering a sibling tab
delivered no hover event and the menus could not be hover-switched.
Add a HeaderMenuState global (open-index, anchor-x, items, home-item)
and the NavMenuEntry struct to state.slint. Tabs now write their
identity into the global on hover/click instead of showing a popup;
the menu panel itself will be rendered by a separate in-window overlay.
Move NavMenuItem into its own file so the overlay can reuse it.
cc
vicrodh