feat(engine): Phase B home hierarchy — Continue card, hero New Game, deal-options disclosure

Restructures the Home overlay per docs/ui-redesign-2026-07.md Phase B:

- Continue card (mode / elapsed / score) when a game is in progress;
  clicking returns to the table
- Hero New Game replays the persisted Settings::last_mode (new field,
  serde-default Classic) with one tap; locked modes fall back to Classic
- Deal options (draw 1/3, winnable-only, difficulty tiers) move into a
  disclosure under the hero — off the Home top level (decision 2)
- Compact symmetric 2x3 mode grid; descriptions on wide viewports only
- Stats strip moves to the bottom (right pane on wide)
- Two-pane body on wide viewports (>= 1000 logical px) via new
  ui_modal::spawn_modal_sized (default card stays 720 px)
- Cancel becomes "Back to table" and only renders while a live
  (un-won) game exists

10 new home_plugin tests; all 936 engine tests + clippy green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/ui-redesign-2026-07.md

@@ -1,7 +1,9 @@
 # Menu UX Redesign — July 2026
 
-Status: PLANNING. Visual identity (Terminal / base16-eighties) is settled and
-out of scope — this is about **structure and interaction**, not colors or type.
+Status: IN PROGRESS. A / E / C / G shipped in v0.43.0; B implemented on
+`feat/home-hierarchy` (2026-07-13); F / H and the I–M backlog remain open.
+Visual identity (Terminal / base16-eighties) is settled and out of
+scope — this is about **structure and interaction**, not colors or type.
 
 ## Diagnosis (from code survey, 2026-07-07)
 

solitaire_data/src/settings.rs

@@ -9,7 +9,10 @@ use std::io;
 use std::path::{Path, PathBuf};
 
 use serde::{Deserialize, Serialize};
-use solitaire_core::{DrawStockConfig, game_state::DifficultyLevel};
+use solitaire_core::{
+    DrawStockConfig,
+    game_state::{DifficultyLevel, GameMode},
+};
 
 const SETTINGS_FILE_NAME: &str = "settings.json";
 
@@ -248,6 +251,12 @@ pub struct Settings {
     /// cleanly to `None` via `#[serde(default)]`.
     #[serde(default)]
     pub last_difficulty: Option<DifficultyLevel>,
+    /// Mode of the last game the player launched from the home overlay.
+    /// The home hero "New Game" button replays this mode with one tap.
+    /// Older `settings.json` files written before this field existed
+    /// deserialize cleanly to `GameMode::Classic` via `#[serde(default)]`.
+    #[serde(default)]
+    pub last_mode: GameMode,
     /// Custom public name displayed on the leaderboard. When `None`, the
     /// player's server `username` is used instead. Trimmed to 32 characters
     /// before submission. Older `settings.json` files written before this
@@ -415,6 +424,7 @@ impl Default for Settings {
             disable_smart_default_size: false,
             replay_move_interval_secs: default_replay_move_interval_secs(),
             last_difficulty: None,
+            last_mode: GameMode::Classic,
             leaderboard_display_name: None,
             leaderboard_opted_in: false,
             take_from_foundation: true,

solitaire_engine/src/ui_modal.rs

@@ -178,6 +178,26 @@ pub fn spawn_modal<M: Component, F>(
     z_panel: i32,
     build_card: F,
 ) -> Entity
+where
+    F: FnOnce(&mut ChildSpawnerCommands),
+{
+    spawn_modal_sized(commands, plugin_marker, z_panel, MODAL_CARD_MAX_WIDTH, build_card)
+}
+
+/// Default maximum card width in logical pixels — every [`spawn_modal`]
+/// caller gets this. Surfaces that lay out side-by-side panes (e.g. the
+/// two-pane Home on wide viewports) can raise it via [`spawn_modal_sized`].
+pub const MODAL_CARD_MAX_WIDTH: f32 = 720.0;
+
+/// [`spawn_modal`] with an explicit card `max_width`. Behaviour is
+/// otherwise identical — same scrim, enter animation, and card chrome.
+pub fn spawn_modal_sized<M: Component, F>(
+    commands: &mut Commands,
+    plugin_marker: M,
+    z_panel: i32,
+    max_width: f32,
+    build_card: F,
+) -> Entity
 where
     F: FnOnce(&mut ChildSpawnerCommands),
 {
@@ -235,7 +255,7 @@ where
                     padding: UiRect::all(VAL_SPACE_5),
                     border: UiRect::all(Val::Px(1.0)),
                     border_radius: BorderRadius::all(Val::Px(RADIUS_LG)),
-                    max_width: Val::Px(720.0),
+                    max_width: Val::Px(max_width),
                     align_items: AlignItems::Stretch,
                     ..default()
                 },