Rework the feed filter rail into simpler label + control rows:
- Remove the rail's own "Clear all" (the chip row above the cards already
surfaces one whenever any filter is active).
- Replace the Upload date chip group with a single-select dropdown
(DateFilterSelect): an "Any time" clear, more presets (2 weeks / 3 months /
2 years / 5 years) and a "Custom range" that reveals from/to on select; the
trigger then reads the chosen range. Selection logic is the pure lib/dateFilter
(applyDateChip -> selectDateChip, no toggle-off; tests updated).
- Widgets are no longer collapsible: PanelGroup gains `collapsible` (feed passes
false) so groups render as always-open label + control rows; reorder + hide in
edit mode stay. Other rails (Plex/Playlists) keep the collapsible islands.
- A non-collapsible group's title can act as its own trigger (PanelItem
onTitleClick): "Your tags" opens the tag manager, replacing the inline Manage
button.
PanelGroups registered only a PointerSensor, so its focusable, "reorderable" group
grips did nothing from the keyboard. Added KeyboardSensor + sortableKeyboardCoordinates,
matching the other sortable lists (Playlists/PlexPlaylistView already had it).
Replace the full-height filter rails with one shared floating glass SidePanel
used by Feed, Plex and Playlists. Each collapses to a slim tab beside the nav;
its sections are reorderable "islands" (drag / hide / per-group collapse) with a
per-panel saved layout; the body hides its scrollbar with a soft top/bottom edge
fade. The nav rail becomes a matching floating rounded card.
- New shared SidePanel / PanelGroup / PanelGroups + useScrollFade hook.
- Generalise the feed-only sidebarLayout into a per-panel panelLayout (feed keeps
its storage key; plex/playlists get their own; persisted per account).
- Lift the Playlists rail to App level (selected playlist is now App state) so it
floats and collapses like the filter rails; remove the old CollapsedFilterRail.
- The floating top header's fixed offset accounts for the panels' margins.
peter