Popout was always reopening as floating even when it had been tiled at
close. closeEvent already persisted geometry + fullscreen, but nothing
captured the Hyprland floating/tiled bit, so the windowrule's
`float = yes` rule always won on reopen.
Now closeEvent records `_saved_tiled` from hyprctl, popout_controller
persists it as `slideshow_tiled`, and FullscreenPreview's restore path
calls the new `hyprland.settiled` helper shortly after show() to push
the window back into the layout. Saved geometry is ignored for tiled
reopens since the tile extent is the layout's concern.
behavior change: popout reopens tiled if it was tiled at close.
pax
3c2aa5820d