On Android, a short tap on the empty game area (not on a card) toggles
the HUD band, info column, and action bar between Visible and Hidden.
Layout recomputes with band_h=0 when hidden so cards fill the full
screen. Any modal open restores the HUD to Visible automatically.
- hud_plugin: HudVisibility resource, HudBand/HudColumn/HudActionBar
markers, apply_hud_visibility (fires synthetic WindowResized),
restore_hud_on_modal, and Android-only toggle_hud_on_tap +
HudTapTracker (15 px slop, skips card taps via DragState.is_idle())
- layout: compute_layout gains hud_visible: bool; passes band_h=0.0
when hidden; all callers updated
- input_plugin: TouchDragSet (AfterStartDrag / BeforeEndDrag) public
system-set anchors for cross-plugin ordering
- table_plugin: setup_table + on_window_resized read HudVisibility and
pass hud_visible to compute_layout
- Desktop behaviour is unchanged (HudVisibility always Visible, tap
system is #[cfg(target_os = "android")] gated)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
funman300
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