fix(android): UX-1/UX-5b/UX-7/BUG-3 — safe-area modals, glyph, help wrap, modal guard

- UX-1 (safe_area.rs): apply_safe_area_to_modal_scrims pads ModalScrim
  bottom by insets.bottom / scale_factor so Done buttons clear the
  gesture bar; fires on inset change + Added<ModalScrim>
- UX-5b (home_plugin.rs): replace Geometric Shapes (U+25xx, missing
  from FiraMono) with card suits U+2660/2665/2666
- UX-7 (help_plugin.rs): shorten Android ≡ button description to
  "Open menu (Stats, Settings, Profile...)" — fits one line at 360 dp
- BUG-3 (hud_plugin.rs): guard spawn_menu_popover with
  scrims.is_empty() so tapping ≡ while a modal is open is a no-op

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

solitaire_engine/src/help_plugin.rs

@@ -159,7 +159,7 @@ const CONTROL_SECTIONS: &[ControlSection] = &[
             ControlRow { keys: "||", description: "Pause / resume" },
             ControlRow { keys: "?", description: "This help screen" },
             ControlRow { keys: "→", description: "Show a hint" },
-            ControlRow { keys: "≡", description: "Menu: Stats, Settings, Profile, Achievements" },
+            ControlRow { keys: "≡", description: "Open menu (Stats, Settings, Profile...)" },
         ],
     },
 ];

solitaire_engine/src/home_plugin.rs

@@ -150,32 +150,24 @@ impl HomeMode {
     /// readability rather than visual fidelity. Swap to `Image` nodes
     /// when art lands; the rest of the tile layout doesn't change.
     ///
-    /// Picks are constrained to **card suits** (U+2660-2666) and basic
-    /// **Geometric Shapes** (U+25xx) — the two ranges the bundled
-    /// FiraMono-Medium face actually covers. Earlier choices in
-    /// Dingbats (★ ❀ ✦) and Misc Symbols (⌚) rendered as
-    /// missing-glyph rectangles because FiraMono's coverage there is
-    /// minimal.
+    /// Picks are constrained to **card suits** (U+2660-2666), the
+    /// **Arrows** block (U+2190-21FF), and ASCII — ranges confirmed
+    /// present in the bundled FiraMono-Medium face. The Geometric
+    /// Shapes block (U+25xx) is NOT covered by FiraMono; glyphs in
+    /// that range render as missing-glyph rectangles on Android.
     fn glyph(self) -> &'static str {
         match self {
-            // Black club — card suit, the obvious solitaire mark.
+            // Black club — card suit; the obvious solitaire mark.
             HomeMode::Classic => "\u{2663}",
-            // Black diamond — Geometric Shapes; reads as the day's gem.
-            HomeMode::Daily => "\u{25C6}",
-            // White circle — Geometric Shapes; reads as the Zen enso.
-            HomeMode::Zen => "\u{25CB}",
-            // Black up-pointing triangle — Geometric Shapes; reads as
-            // a mountain / a step up in difficulty.
-            HomeMode::Challenge => "\u{25B2}",
-            // Rightwards arrow — Arrows block (U+2190-21FF), a core
-            // range every dev-oriented monospace font (FiraMono
-            // included) ships. Reads as "go / fast-forward" for the
-            // timed mode. Earlier ▶ (U+25B6) did not render; FiraMono
-            // ships ▲ (up triangle) but evidently not the sideways
-            // siblings.
+            // Black diamond suit — "gem of the day" reading.
+            HomeMode::Daily => "\u{2666}",
+            // Black heart suit — calm/warm; conveys the Zen mood.
+            HomeMode::Zen => "\u{2665}",
+            // Black spade suit — sharp/high-stakes; signals difficulty.
+            HomeMode::Challenge => "\u{2660}",
+            // Rightwards arrow — "go / fast-forward" for the timed mode.
             HomeMode::TimeAttack => "\u{2192}",
-            // Number sign — ASCII, universally available. Reads as
-            // "a specific number / seed ID".
+            // Number sign — ASCII; "a specific seed ID".
             HomeMode::PlayBySeed => "#",
         }
     }

solitaire_engine/src/hud_plugin.rs

@@ -40,6 +40,7 @@ use crate::resources::GameStateResource;
 use crate::selection_plugin::SelectionState;
 use crate::time_attack_plugin::TimeAttackResource;
 use crate::ui_focus::{FocusGroup, Focusable};
+use crate::ui_modal::ModalScrim;
 use crate::ui_tooltip::Tooltip;
 
 /// Marker on the score text node.
@@ -1074,6 +1075,7 @@ fn handle_menu_button(
     interaction_query: Query<&Interaction, (With<MenuButton>, Changed<Interaction>)>,
     popovers: Query<Entity, With<MenuPopover>>,
     backdrops: Query<Entity, With<MenuPopoverBackdrop>>,
+    scrims: Query<(), With<ModalScrim>>,
     font_res: Option<Res<FontResource>>,
     mut commands: Commands,
 ) {
@@ -1088,7 +1090,7 @@ fn handle_menu_button(
         for e in &backdrops {
             commands.entity(e).despawn();
         }
-    } else {
+    } else if scrims.is_empty() {
         spawn_menu_popover(&mut commands, font_res.as_deref());
     }
 }

solitaire_engine/src/safe_area.rs

@@ -19,6 +19,8 @@
 
 use bevy::prelude::*;
 
+use crate::ui_modal::ModalScrim;
+
 /// Pixel sizes of the system-reserved regions on each edge of the
 /// surface. Zero on desktop.
 #[derive(Resource, Debug, Clone, Copy, Default, PartialEq)]
@@ -54,7 +56,7 @@ pub struct SafeAreaInsetsPlugin;
 impl Plugin for SafeAreaInsetsPlugin {
     fn build(&self, app: &mut App) {
         app.init_resource::<SafeAreaInsets>()
-            .add_systems(Update, apply_safe_area_anchors);
+            .add_systems(Update, (apply_safe_area_anchors, apply_safe_area_to_modal_scrims));
 
         #[cfg(target_os = "android")]
         app.add_systems(Update, android::refresh_insets);
@@ -87,6 +89,29 @@ fn apply_safe_area_anchors(
     }
 }
 
+/// Pads the bottom of every [`ModalScrim`] by the logical bottom inset so
+/// modal cards don't extend into the Android gesture-navigation zone.
+///
+/// Fires when [`SafeAreaInsets`] changes (covers the common case of insets
+/// arriving a few frames after app start) AND when a new `ModalScrim` is
+/// spawned (covers modals opened after insets have already settled).
+fn apply_safe_area_to_modal_scrims(
+    insets: Res<SafeAreaInsets>,
+    windows: Query<&Window>,
+    mut scrims: Query<&mut Node, With<ModalScrim>>,
+    new_scrims: Query<(), (With<ModalScrim>, Added<ModalScrim>)>,
+) {
+    let has_new = !new_scrims.is_empty();
+    if !insets.is_changed() && !has_new {
+        return;
+    }
+    let scale = windows.iter().next().map_or(1.0, |w| w.scale_factor());
+    let bottom_logical = insets.bottom / scale;
+    for mut node in &mut scrims {
+        node.padding.bottom = Val::Px(bottom_logical);
+    }
+}
+
 #[cfg(target_os = "android")]
 mod android {
     use super::SafeAreaInsets;