chore(deps): migrate to Bevy 0.16, axum 0.8, and other package updates

- Bump bevy 0.15 → 0.16; fixes all breaking API changes:
  ChildBuilder → ChildSpawnerCommands, Parent → ChildOf,
  despawn_descendants → despawn_related::<Children>(),
  despawn_recursive → despawn (now recursive by default),
  EventWriter::send → write, Query::{get_single,get_single_mut}
  → {single,single_mut}, ChildOf::get → parent()
- Bump axum 0.7 → 0.8; remove axum::async_trait from FromRequestParts
- Bump tower_governor 0.4 → 0.8; fix GovernorLayer::new() API
- Bump jsonwebtoken 9 → 10 with rust_crypto feature only
- Bump thiserror 1 → 2, dirs 5 → 6, bcrypt 0.15 → 0.19,
  reqwest 0.12 → 0.13 (rustls feature rename)
- Regenerate .sqlx offline cache for sqlx compile-time query checks

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

Cargo.toml

@@ -20,27 +20,27 @@ serde       = { version = "1", features = ["derive"] }
 serde_json  = "1"
 uuid        = { version = "1", features = ["v4", "serde"] }
 chrono      = { version = "0.4", features = ["serde"] }
-thiserror   = "1"
+thiserror   = "2"
 rand        = "0.8"
 async-trait = "0.1"
 tokio       = { version = "1", features = ["full"] }
-dirs        = "5"
+dirs        = "6"
 keyring     = "2"
-reqwest     = { version = "0.12", features = ["json", "rustls-tls"], default-features = false }
+reqwest     = { version = "0.13", features = ["json", "rustls", "rustls-native-certs"], default-features = false }
 
 solitaire_core   = { path = "solitaire_core" }
 solitaire_sync   = { path = "solitaire_sync" }
 solitaire_data   = { path = "solitaire_data" }
 solitaire_engine = { path = "solitaire_engine" }
 
-bevy = "0.15"
+bevy = "0.16"
 kira = "0.9"
 
-axum               = "0.7"
+axum               = "0.8"
 sqlx               = { version = "0.8", features = ["runtime-tokio-rustls", "sqlite", "macros", "migrate"] }
-jsonwebtoken       = "9"
+jsonwebtoken       = { version = "10", default-features = false, features = ["rust_crypto"] }
-bcrypt             = "0.15"
+bcrypt             = "0.19"
-tower_governor     = "0.4"
+tower_governor     = "0.8"
 tracing            = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 dotenvy            = "0.15"

solitaire_engine/src/achievement_plugin.rs

@@ -156,10 +156,10 @@ fn evaluate_on_win(
                         }
                     }
                     Reward::BonusXp(amount) => {
-                        xp_awarded.send(XpAwardedEvent { amount });
+                        xp_awarded.write(XpAwardedEvent { amount });
                         let prev_level = progress.0.add_xp(amount);
                         if progress.0.leveled_up_from(prev_level) {
-                            levelups.send(LevelUpEvent {
+                            levelups.write(LevelUpEvent {
                                 previous_level: prev_level,
                                 new_level: progress.0.level,
                                 total_xp: progress.0.total_xp,
@@ -173,7 +173,7 @@ fn evaluate_on_win(
             record.reward_granted = true;
         }
 
-        unlocks.send(AchievementUnlockedEvent(record.clone()));
+        unlocks.write(AchievementUnlockedEvent(record.clone()));
     }
 
     if achievements_changed {
@@ -211,8 +211,8 @@ fn toggle_achievements_screen(
     if !keys.just_pressed(KeyCode::KeyA) {
         return;
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     } else {
         spawn_achievements_screen(&mut commands, &achievements.0);
     }

solitaire_engine/src/animation_plugin.rs

@@ -465,7 +465,7 @@ fn drive_toast_display(
         active.timer -= dt;
         if active.timer <= 0.0 {
             // Despawn the toast entity and clear the active slot.
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
             active.entity = None;
             active.timer = 0.0;
         }
@@ -532,7 +532,7 @@ fn tick_toasts(
     for (entity, mut timer) in &mut toasts {
         timer.0 -= dt;
         if timer.0 <= 0.0 {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
     }
 }

solitaire_engine/src/auto_complete_plugin.rs

@@ -122,7 +122,7 @@ fn drive_auto_complete(
         return;
     };
 
-    moves.send(MoveRequestEvent { from, to, count: 1 });
+    moves.write(MoveRequestEvent { from, to, count: 1 });
     state.cooldown = STEP_INTERVAL;
 }
 

solitaire_engine/src/card_animation/interaction.rs

@@ -236,13 +236,13 @@ pub(crate) fn drain_input_buffer(
     }
     match buffer.queue.pop_front() {
         Some(BufferedInput::Move { from }) => {
-            move_events.send(from);
+            move_events.write(from);
         }
         Some(BufferedInput::Draw) => {
-            draw_events.send(DrawRequestEvent);
+            draw_events.write(DrawRequestEvent);
         }
         Some(BufferedInput::Undo) => {
-            undo_events.send(UndoRequestEvent);
+            undo_events.write(UndoRequestEvent);
         }
         None => {}
     }
@@ -259,9 +259,9 @@ fn cursor_world(
     windows: &Query<&Window, With<PrimaryWindow>>,
     cameras: &Query<(&Camera, &GlobalTransform)>,
 ) -> Option<Vec2> {
-    let window = windows.get_single().ok()?;
+    let window = windows.single().ok()?;
     let cursor = window.cursor_position()?;
-    let (camera, camera_transform) = cameras.get_single().ok()?;
+    let (camera, camera_transform) = cameras.single().ok()?;
     camera.viewport_to_world_2d(camera_transform, cursor).ok()
 }
 

solitaire_engine/src/card_plugin.rs

@@ -187,7 +187,7 @@ fn resync_cards_on_settings_change(
     mut state_events: EventWriter<StateChangedEvent>,
 ) {
     if setting_events.read().next().is_some() {
-        state_events.send(StateChangedEvent);
+        state_events.write(StateChangedEvent);
     }
 }
 
@@ -256,7 +256,7 @@ fn sync_cards(
     // Despawn any entity whose card is no longer tracked.
     for (card_id, (entity, _)) in &existing {
         if !live_ids.contains(card_id) {
-            commands.entity(*entity).despawn_recursive();
+            commands.entity(*entity).despawn();
         }
     }
 
@@ -443,7 +443,7 @@ fn update_card_entity(
 
     // Despawn the old label child and respawn a fresh one, so rank/suit/
     // colour/visibility all stay in sync with the card's current state.
-    commands.entity(entity).despawn_descendants();
+    commands.entity(entity).despawn_related::<Children>();
     commands.entity(entity).with_children(|b| {
         b.spawn((
             CardLabel,
@@ -558,7 +558,7 @@ fn tick_flip_anim(
                     transform.scale.x = 0.0;
                     // Fire the reveal event exactly once, at the phase transition,
                     // so the flip sound is synchronised with the visual face reveal.
-                    reveal_events.send(CardFaceRevealedEvent(card_entity.card_id));
+                    reveal_events.write(CardFaceRevealedEvent(card_entity.card_id));
                 }
             }
             FlipPhase::ScalingUp => {
@@ -592,7 +592,7 @@ fn update_drag_shadow(
     if drag.is_idle() {
         // No drag in progress — remove shadow if it exists.
         if let Some(e) = shadow.take() {
-            commands.entity(e).despawn_recursive();
+            commands.entity(e).despawn();
         }
         return;
     }
@@ -847,9 +847,9 @@ fn cursor_world_pos(
     windows: &Query<&Window, With<bevy::window::PrimaryWindow>>,
     cameras: &Query<(&Camera, &GlobalTransform)>,
 ) -> Option<Vec2> {
-    let window = windows.get_single().ok()?;
+    let window = windows.single().ok()?;
     let cursor = window.cursor_position()?;
-    let (camera, camera_transform) = cameras.get_single().ok()?;
+    let (camera, camera_transform) = cameras.single().ok()?;
     camera.viewport_to_world_2d(camera_transform, cursor).ok()
 }
 
@@ -911,7 +911,7 @@ fn apply_stock_empty_indicator(
     commands: &mut Commands,
     game: &GameState,
     pile_markers: &mut Query<(Entity, &PileMarker, &mut Sprite)>,
-    label_children: &Query<(Entity, &Parent), With<StockEmptyLabel>>,
+    label_children: &Query<(Entity, &ChildOf), With<StockEmptyLabel>>,
     layout: &Layout,
 ) {
     let stock_empty = game
@@ -931,7 +931,7 @@ fn apply_stock_empty_indicator(
             // Spawn the "↺" label only if one does not already exist.
             let already_has_label = label_children
                 .iter()
-                .any(|(_, parent)| parent.get() == entity);
+                .any(|(_, parent)| parent.parent() == entity);
             if !already_has_label {
                 let font_size = layout.card_size.x * 0.4;
                 commands.entity(entity).with_children(|b| {
@@ -950,8 +950,8 @@ fn apply_stock_empty_indicator(
 
             // Despawn any existing "↺" label children.
             for (label_entity, parent) in label_children.iter() {
-                if parent.get() == entity {
+                if parent.parent() == entity {
-                    commands.entity(label_entity).despawn_recursive();
+                    commands.entity(label_entity).despawn();
                 }
             }
         }
@@ -965,7 +965,7 @@ fn update_stock_empty_indicator_startup(
     game: Res<GameStateResource>,
     layout: Option<Res<LayoutResource>>,
     mut pile_markers: Query<(Entity, &PileMarker, &mut Sprite)>,
-    label_children: Query<(Entity, &Parent), With<StockEmptyLabel>>,
+    label_children: Query<(Entity, &ChildOf), With<StockEmptyLabel>>,
 ) {
     let Some(layout) = layout else { return };
     apply_stock_empty_indicator(
@@ -985,7 +985,7 @@ fn update_stock_empty_indicator(
     game: Res<GameStateResource>,
     layout: Option<Res<LayoutResource>>,
     mut pile_markers: Query<(Entity, &PileMarker, &mut Sprite)>,
-    label_children: Query<(Entity, &Parent), With<StockEmptyLabel>>,
+    label_children: Query<(Entity, &ChildOf), With<StockEmptyLabel>>,
 ) {
     if events.read().next().is_none() {
         return;

solitaire_engine/src/challenge_plugin.rs

@@ -59,8 +59,8 @@ fn advance_on_challenge_win(
         }
         // Human-readable level is 1-based (index 0 → "Challenge 1").
         let level_number = prev.saturating_add(1);
-        toast.send(InfoToastEvent(format!("Challenge {level_number} complete!")));
+        toast.write(InfoToastEvent(format!("Challenge {level_number} complete!")));
-        advanced.send(ChallengeAdvancedEvent {
+        advanced.write(ChallengeAdvancedEvent {
             previous_index: prev,
             new_index: progress.0.challenge_index,
         });
@@ -77,7 +77,7 @@ fn handle_start_challenge_request(
         return;
     }
     if progress.0.level < CHALLENGE_UNLOCK_LEVEL {
-        info_toast.send(InfoToastEvent(format!(
+        info_toast.write(InfoToastEvent(format!(
             "Challenge mode unlocks at level {CHALLENGE_UNLOCK_LEVEL}"
         )));
         return;
@@ -86,7 +86,7 @@ fn handle_start_challenge_request(
         warn!("challenge seed list is empty");
         return;
     };
-    new_game.send(NewGameRequestEvent {
+    new_game.write(NewGameRequestEvent {
         seed: Some(seed),
         mode: Some(GameMode::Challenge),
     });

solitaire_engine/src/cursor_plugin.rs

@@ -52,7 +52,7 @@ fn update_cursor_icon(
     game: Option<Res<GameStateResource>>,
     mut commands: Commands,
 ) {
-    let Ok((win_entity, window)) = windows.get_single() else { return };
+    let Ok((win_entity, window)) = windows.single() else { return };
 
     if !drag.is_idle() {
         commands
@@ -63,7 +63,7 @@ fn update_cursor_icon(
 
     let hovering = (|| {
         let cursor = window.cursor_position()?;
-        let (camera, cam_xf) = cameras.get_single().ok()?;
+        let (camera, cam_xf) = cameras.single().ok()?;
         let world = camera.viewport_to_world_2d(cam_xf, cursor).ok()?;
         let layout = layout.as_ref()?.0.clone();
         let game = game.as_ref()?;

solitaire_engine/src/daily_challenge_plugin.rs

@@ -174,17 +174,17 @@ fn handle_daily_completion(
             continue;
         }
         progress.0.add_xp(DAILY_BONUS_XP);
-        xp_awarded.send(XpAwardedEvent { amount: DAILY_BONUS_XP });
+        xp_awarded.write(XpAwardedEvent { amount: DAILY_BONUS_XP });
         if let Some(target) = &path.0 {
             if let Err(e) = save_progress_to(target, &progress.0) {
                 warn!("failed to save progress after daily completion: {e}");
             }
         }
-        completed.send(DailyChallengeCompletedEvent {
+        completed.write(DailyChallengeCompletedEvent {
             date: daily.date,
             streak: progress.0.daily_challenge_streak,
         });
-        toast.send(InfoToastEvent("Daily challenge complete! +100 XP".to_string()));
+        toast.write(InfoToastEvent("Daily challenge complete! +100 XP".to_string()));
     }
 }
 
@@ -195,7 +195,7 @@ fn handle_start_daily_request(
     mut announce: EventWriter<DailyGoalAnnouncementEvent>,
 ) {
     if keys.just_pressed(KeyCode::KeyC) {
-        new_game.send(NewGameRequestEvent {
+        new_game.write(NewGameRequestEvent {
             seed: Some(daily.seed),
             mode: None,
         });
@@ -203,7 +203,7 @@ fn handle_start_daily_request(
             .goal_description
             .clone()
             .unwrap_or_else(|| "Daily Challenge".to_string());
-        announce.send(DailyGoalAnnouncementEvent(desc));
+        announce.write(DailyGoalAnnouncementEvent(desc));
     }
 }
 

solitaire_engine/src/game_plugin.rs

@@ -169,7 +169,7 @@ fn handle_new_game(
         if needs_confirm && !confirm_already_open {
             // Despawn any stale game-over overlay before showing confirm dialog.
             for entity in &game_over_screens {
-                commands.entity(entity).despawn_recursive();
+                commands.entity(entity).despawn();
             }
             spawn_confirm_dialog(&mut commands, *ev);
             continue;
@@ -177,10 +177,10 @@ fn handle_new_game(
 
         // Despawn confirm and game-over overlays before starting the new game.
         for entity in &confirm_screens {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
         for entity in &game_over_screens {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
 
         let seed = ev.seed.unwrap_or_else(seed_from_system_time);
@@ -199,7 +199,7 @@ fn handle_new_game(
                 warn!("game_state: failed to delete saved game: {e}");
             }
         }
-        changed.send(StateChangedEvent);
+        changed.write(StateChangedEvent);
     }
 }
 
@@ -289,7 +289,7 @@ fn handle_confirm_input(
     screens: Query<(Entity, &OriginalNewGameRequest), With<ConfirmNewGameScreen>>,
     mut new_game: EventWriter<NewGameRequestEvent>,
 ) {
-    let Ok((entity, original)) = screens.get_single() else {
+    let Ok((entity, original)) = screens.single() else {
         return;
     };
     let Some(keys) = keys else {
@@ -300,16 +300,16 @@ fn handle_confirm_input(
     let cancelled = keys.just_pressed(KeyCode::KeyN) || keys.just_pressed(KeyCode::Escape);
 
     if confirmed {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
         // Re-send with move_count already 0 would bypass the dialog next time.
         // We fire the event — handle_new_game will skip the dialog because
         // the screen is despawned before the next read.
-        new_game.send(NewGameRequestEvent {
+        new_game.write(NewGameRequestEvent {
             seed: original.0.seed,
             mode: original.0.mode,
         });
     } else if cancelled {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     }
 }
 
@@ -347,9 +347,9 @@ fn handle_draw(
             Ok(()) => {
                 // Fire a flip event for each card that moved from stock to waste.
                 for id in drawn_ids {
-                    flipped.send(CardFlippedEvent(id));
+                    flipped.write(CardFlippedEvent(id));
                 }
-                changed.send(StateChangedEvent);
+                changed.write(StateChangedEvent);
             }
             Err(e) => warn!("draw rejected: {e}"),
         }
@@ -385,12 +385,12 @@ fn handle_move(
                         .and_then(|p| p.cards.last())
                         .is_some_and(|c| c.id == fid && c.face_up)
                     {
-                        flipped.send(crate::events::CardFlippedEvent(fid));
+                        flipped.write(crate::events::CardFlippedEvent(fid));
                     }
                 }
-                changed.send(StateChangedEvent);
+                changed.write(StateChangedEvent);
                 if !was_won && game.0.is_won {
-                    won.send(GameWonEvent {
+                    won.write(GameWonEvent {
                         score: game.0.score,
                         time_seconds: game.0.elapsed_seconds,
                     });
@@ -418,10 +418,10 @@ fn handle_undo(
     for _ in undos.read() {
         match game.0.undo() {
             Ok(()) => {
-                changed.send(StateChangedEvent);
+                changed.write(StateChangedEvent);
             }
             Err(MoveError::UndoStackEmpty) => {
-                toast.send(InfoToastEvent("Nothing to undo".to_string()));
+                toast.write(InfoToastEvent("Nothing to undo".to_string()));
             }
             Err(e) => warn!("undo rejected: {e}"),
         }
@@ -523,7 +523,7 @@ fn check_no_moves(
     let moves_ok = has_legal_moves(&game.0);
     if moves_ok || game.0.is_won {
         for entity in &game_over_screens {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
     }
 
@@ -532,7 +532,7 @@ fn check_no_moves(
     }
 
     if !moves_ok && !*already_fired {
-        toast.send(InfoToastEvent(
+        toast.write(InfoToastEvent(
             "No moves available \u{2014} press D to draw or N for a new game".to_string(),
         ));
         *already_fired = true;
@@ -639,12 +639,12 @@ fn handle_game_over_input(
     };
 
     if keys.just_pressed(KeyCode::KeyN) || keys.just_pressed(KeyCode::Escape) {
-        new_game.send(NewGameRequestEvent::default());
+        new_game.write(NewGameRequestEvent::default());
     } else if keys.just_pressed(KeyCode::KeyU) {
         for entity in &screens {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
-        undo.send(UndoRequestEvent);
+        undo.write(UndoRequestEvent);
     }
 }
 

solitaire_engine/src/help_plugin.rs

@@ -25,8 +25,8 @@ fn toggle_help_screen(
     if !keys.just_pressed(KeyCode::F1) {
         return;
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     } else {
         spawn_help_screen(&mut commands);
     }

solitaire_engine/src/home_plugin.rs

@@ -31,8 +31,8 @@ fn toggle_home_screen(
     if !keys.just_pressed(KeyCode::KeyM) {
         return;
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     } else {
         spawn_home_screen(&mut commands, &game);
     }
@@ -139,7 +139,7 @@ fn spawn_home_screen(commands: &mut Commands, game: &GameStateResource) {
         });
 }
 
-fn spawn_shortcut_row(parent: &mut ChildBuilder, key: &str, action: &str) {
+fn spawn_shortcut_row(parent: &mut ChildSpawnerCommands, key: &str, action: &str) {
     parent
         .spawn(Node {
             flex_direction: FlexDirection::Row,

solitaire_engine/src/hud_plugin.rs

@@ -325,7 +325,7 @@ fn update_hud(
     if game.is_changed() {
         let g = &game.0;
         let is_zen = g.mode == GameMode::Zen;
-        if let Ok(mut t) = score_q.get_single_mut() {
+        if let Ok(mut t) = score_q.single_mut() {
             // Zen mode suppresses score display per spec ("No score display").
             **t = if is_zen {
                 String::new()
@@ -333,10 +333,10 @@ fn update_hud(
                 format!("Score: {}", g.score)
             };
         }
-        if let Ok(mut t) = moves_q.get_single_mut() {
+        if let Ok(mut t) = moves_q.single_mut() {
             **t = format!("Moves: {}", g.move_count);
         }
-        if let Ok(mut t) = mode_q.get_single_mut() {
+        if let Ok(mut t) = mode_q.single_mut() {
             **t = match g.mode {
                 GameMode::Classic => match g.draw_mode {
                     DrawMode::DrawOne => String::new(),
@@ -349,7 +349,7 @@ fn update_hud(
         }
 
         // --- Daily challenge constraint (with time-low colour warning) ---
-        if let Ok((mut t, mut color)) = challenge_q.get_single_mut() {
+        if let Ok((mut t, mut color)) = challenge_q.single_mut() {
             if g.is_won {
                 **t = String::new();
             } else if let Some(dc) = daily.as_deref() {
@@ -364,7 +364,7 @@ fn update_hud(
         }
 
         // --- Undo count ---
-        if let Ok((mut t, mut color)) = undos_q.get_single_mut() {
+        if let Ok((mut t, mut color)) = undos_q.single_mut() {
             let count = g.undo_count;
             if count == 0 {
                 **t = String::new();
@@ -377,7 +377,7 @@ fn update_hud(
         }
 
         // --- Recycle counter (both modes, hidden until first recycle) ---
-        if let Ok(mut t) = recycles_q.get_single_mut() {
+        if let Ok(mut t) = recycles_q.single_mut() {
             **t = if g.recycle_count > 0 {
                 format!("Recycles: {}", g.recycle_count)
             } else {
@@ -386,7 +386,7 @@ fn update_hud(
         }
 
         // --- Draw-cycle indicator (Draw-Three mode only) ---
-        if let Ok(mut t) = draw_cycle_q.get_single_mut() {
+        if let Ok(mut t) = draw_cycle_q.single_mut() {
             **t = if g.is_won || g.draw_mode != DrawMode::DrawThree {
                 // Hide when not in Draw-Three or after the game is won.
                 String::new()
@@ -405,7 +405,7 @@ fn update_hud(
     let is_zen = game.0.mode == GameMode::Zen;
     let update_time = (ta_active || game.is_changed()) && !is_zen;
     if update_time {
-        if let Ok(mut t) = time_q.get_single_mut() {
+        if let Ok(mut t) = time_q.single_mut() {
             if let Some(ta) = time_attack.as_ref().filter(|ta| ta.active) {
                 let remaining = ta.remaining_secs.max(0.0) as u64;
                 let m = remaining / 60;
@@ -422,7 +422,7 @@ fn update_hud(
         // Clear the time display immediately whenever Zen mode is active —
         // do not guard on game.is_changed() so it clears on the same frame
         // the player presses Z, before any move is made.
-        if let Ok(mut t) = time_q.get_single_mut() {
+        if let Ok(mut t) = time_q.single_mut() {
             **t = String::new();
         }
     }
@@ -432,7 +432,7 @@ fn update_hud(
     let ac_active = auto_complete.as_ref().is_some_and(|ac| ac.active);
     let ac_changed = auto_complete.as_ref().is_some_and(|ac| ac.is_changed());
     if ac_changed || game.is_changed() {
-        if let Ok(mut t) = auto_q.get_single_mut() {
+        if let Ok(mut t) = auto_q.single_mut() {
             **t = if ac_active {
                 "AUTO".to_string()
             } else {
@@ -451,7 +451,7 @@ fn update_selection_hud(
     selection: Option<Res<SelectionState>>,
     mut q: Query<&mut Text, With<HudSelection>>,
 ) {
-    let Ok(mut t) = q.get_single_mut() else { return };
+    let Ok(mut t) = q.single_mut() else { return };
     let label = match selection.as_deref().and_then(|s| s.selected_pile.as_ref()) {
         None => String::new(),
         Some(PileType::Waste) => "▶ Waste".to_string(),
@@ -480,7 +480,7 @@ fn announce_auto_complete(
 ) {
     let now_active = auto_complete.as_ref().is_some_and(|ac| ac.active);
     if now_active && !*was_active {
-        toast.send(InfoToastEvent("Auto-completing...".to_string()));
+        toast.write(InfoToastEvent("Auto-completing...".to_string()));
     }
     *was_active = now_active;
 }

solitaire_engine/src/input_plugin.rs

@@ -126,7 +126,7 @@ fn handle_keyboard(
             // Countdown expired without a second N press — notify the player.
             if *confirm_pending {
                 *confirm_pending = false;
-                ev.info_toast.send(InfoToastEvent("New game cancelled".to_string()));
+                ev.info_toast.write(InfoToastEvent("New game cancelled".to_string()));
             }
         }
     }
@@ -140,7 +140,7 @@ fn handle_keyboard(
 
     if keys.just_pressed(KeyCode::KeyU) {
         if *forfeit_countdown > 0.0 { *forfeit_countdown = 0.0; }
-        ev.undo.send(UndoRequestEvent);
+        ev.undo.write(UndoRequestEvent);
     }
     if keys.just_pressed(KeyCode::KeyN) {
         // If a Time Attack session is running, cancel it and start a Classic game.
@@ -148,8 +148,8 @@ fn handle_keyboard(
             if session.active {
                 session.active = false;
                 session.remaining_secs = 0.0;
-                ev.info_toast.send(InfoToastEvent("Time Attack ended".to_string()));
+                ev.info_toast.write(InfoToastEvent("Time Attack ended".to_string()));
-                ev.new_game.send(NewGameRequestEvent {
+                ev.new_game.write(NewGameRequestEvent {
                     seed: None,
                     mode: Some(solitaire_core::game_state::GameMode::Classic),
                 });
@@ -162,19 +162,19 @@ fn handle_keyboard(
         let shift_held = keys.pressed(KeyCode::ShiftLeft) || keys.pressed(KeyCode::ShiftRight);
         if shift_held || !active_game {
             // Shift+N or no active game — start immediately, no confirmation.
-            ev.new_game.send(NewGameRequestEvent::default());
+            ev.new_game.write(NewGameRequestEvent::default());
             *confirm_countdown = 0.0;
             *confirm_pending = false;
         } else if *confirm_countdown > 0.0 {
             // Second press within the window — confirmed.
-            ev.new_game.send(NewGameRequestEvent::default());
+            ev.new_game.write(NewGameRequestEvent::default());
             *confirm_countdown = 0.0;
             *confirm_pending = false;
         } else {
             // First press on an active game — require confirmation.
             *confirm_countdown = NEW_GAME_CONFIRM_WINDOW;
             *confirm_pending = true;
-            ev.confirm_event.send(NewGameConfirmEvent);
+            ev.confirm_event.write(NewGameConfirmEvent);
         }
     }
     if keys.just_pressed(KeyCode::KeyZ) {
@@ -183,19 +183,19 @@ fn handle_keyboard(
         // X is gated separately by ChallengePlugin.
         let level = progress.as_ref().map_or(0, |p| p.0.level);
         if level >= CHALLENGE_UNLOCK_LEVEL {
-            ev.new_game.send(NewGameRequestEvent {
+            ev.new_game.write(NewGameRequestEvent {
                 seed: None,
                 mode: Some(solitaire_core::game_state::GameMode::Zen),
             });
         } else {
-            ev.info_toast.send(InfoToastEvent(format!(
+            ev.info_toast.write(InfoToastEvent(format!(
                 "Zen mode unlocks at level {CHALLENGE_UNLOCK_LEVEL}"
             )));
         }
     }
     if keys.just_pressed(KeyCode::KeyD) || keys.just_pressed(KeyCode::Space) {
         if *forfeit_countdown > 0.0 { *forfeit_countdown = 0.0; }
-        ev.draw.send(DrawRequestEvent);
+        ev.draw.write(DrawRequestEvent);
     }
     // H — cycle through all available hints on each press, highlighting the
     // source card yellow for 1.5 s. The index wraps around once all hints have
@@ -204,13 +204,13 @@ fn handle_keyboard(
         if *forfeit_countdown > 0.0 { *forfeit_countdown = 0.0; }
         if let Some(ref g) = game {
             if g.0.is_won {
-                ev.info_toast.send(InfoToastEvent(
+                ev.info_toast.write(InfoToastEvent(
                     "Game won! Press N for a new game".to_string(),
                 ));
             } else if let Some(ref layout_res) = layout {
                     let hints = all_hints(&g.0);
                     if hints.is_empty() {
-                        ev.info_toast.send(InfoToastEvent("No hints available".to_string()));
+                        ev.info_toast.write(InfoToastEvent("No hints available".to_string()));
                     } else {
                         // Pick the hint at the current cycle index (wrapping) and advance.
                         let idx = hint_cycle.0 % hints.len();
@@ -229,7 +229,7 @@ fn handle_keyboard(
                             } else {
                                 "Hint: draw from stock (D)".to_string()
                             };
-                            ev.info_toast.send(InfoToastEvent(msg));
+                            ev.info_toast.write(InfoToastEvent(msg));
                         } else {
                             // Find the top face-up card in the source pile and highlight it.
                             let top_card_id = g.0.piles.get(from)
@@ -251,7 +251,7 @@ fn handle_keyboard(
                                 }
                                 // Emit HintVisualEvent so the destination pile
                                 // marker is also tinted gold for 2 s.
-                                ev.hint_visual.send(HintVisualEvent {
+                                ev.hint_visual.write(HintVisualEvent {
                                     source_card_id: card_id,
                                     dest_pile: to.clone(),
                                 });
@@ -273,7 +273,7 @@ fn handle_keyboard(
                                 }
                                 _ => "Hint: move card".to_string(),
                             };
-                            ev.info_toast.send(InfoToastEvent(msg));
+                            ev.info_toast.write(InfoToastEvent(msg));
                         }
                     }
             }
@@ -287,12 +287,12 @@ fn handle_keyboard(
         if active_game {
             if *forfeit_countdown > 0.0 {
                 // Second press within the confirmation window — confirmed.
-                ev.forfeit.send(ForfeitEvent);
+                ev.forfeit.write(ForfeitEvent);
                 *forfeit_countdown = 0.0;
             } else {
                 // First press — start the countdown and warn the player.
                 *forfeit_countdown = FORFEIT_CONFIRM_WINDOW;
-                ev.info_toast.send(InfoToastEvent("Press G again to forfeit".to_string()));
+                ev.info_toast.write(InfoToastEvent("Press G again to forfeit".to_string()));
             }
         }
     }
@@ -327,7 +327,7 @@ fn handle_fullscreen(
     if !keys.just_pressed(KeyCode::F11) {
         return;
     }
-    let Ok(mut window) = windows.get_single_mut() else { return };
+    let Ok(mut window) = windows.single_mut() else { return };
     let new_mode = match window.mode {
         WindowMode::Windowed => WindowMode::BorderlessFullscreen(MonitorSelection::Current),
         _ => WindowMode::Windowed,
@@ -337,7 +337,7 @@ fn handle_fullscreen(
         WindowMode::Windowed => "Fullscreen: off",
         _ => "Fullscreen: on",
     };
-    toast.send(InfoToastEvent(label.to_string()));
+    toast.write(InfoToastEvent(label.to_string()));
 }
 
 fn handle_stock_click(
@@ -366,7 +366,7 @@ fn handle_stock_click(
         return;
     };
     if point_in_rect(world, stock_pos, layout.0.card_size) {
-        draw.send(DrawRequestEvent);
+        draw.write(DrawRequestEvent);
     }
 }
 
@@ -517,14 +517,14 @@ fn end_drag(
                     _ => false,
                 };
                 if ok {
-                    moves.send(MoveRequestEvent {
+                    moves.write(MoveRequestEvent {
                         from: origin.clone(),
                         to: target.clone(),
                         count,
                     });
                     fired = true;
                 } else {
-                    rejected.send(MoveRejectedEvent {
+                    rejected.write(MoveRejectedEvent {
                         from: origin.clone(),
                         to: target.clone(),
                         count,
@@ -552,7 +552,7 @@ fn end_drag(
     // Either the move succeeded (GamePlugin will also fire StateChangedEvent)
     // or it didn't — in both cases we emit one so cards resync to the current
     // game state. Duplicate events are harmless.
-    changed.send(StateChangedEvent);
+    changed.write(StateChangedEvent);
     let _ = fired;
 }
 
@@ -564,9 +564,9 @@ fn cursor_world(
     windows: &Query<&Window, With<PrimaryWindow>>,
     cameras: &Query<(&Camera, &GlobalTransform)>,
 ) -> Option<Vec2> {
-    let window = windows.get_single().ok()?;
+    let window = windows.single().ok()?;
     let cursor = window.cursor_position()?;
-    let (camera, camera_transform) = cameras.get_single().ok()?;
+    let (camera, camera_transform) = cameras.single().ok()?;
     camera.viewport_to_world_2d(camera_transform, cursor).ok()
 }
 
@@ -844,7 +844,7 @@ fn handle_double_click(
 
         // Priority 1: move the single top card (foundation preferred, then tableau).
         if let Some(dest) = best_destination(top_card, &game.0) {
-            moves.send(MoveRequestEvent {
+            moves.write(MoveRequestEvent {
                 from: pile,
                 to: dest,
                 count: 1,
@@ -864,7 +864,7 @@ fn handle_double_click(
                 &game.0,
                 card_ids.len(),
             ) {
-                moves.send(MoveRequestEvent {
+                moves.write(MoveRequestEvent {
                     from: pile,
                     to: dest,
                     count,
@@ -874,7 +874,7 @@ fn handle_double_click(
                 // sound and shake the source pile cards as feedback.
                 // `MoveRejectedEvent` with `from == to` routes the shake to
                 // the source pile (which `start_shake_anim` reads from `ev.to`).
-                rejected.send(MoveRejectedEvent {
+                rejected.write(MoveRejectedEvent {
                     from: pile.clone(),
                     to: pile,
                     count: card_ids.len(),

solitaire_engine/src/leaderboard_plugin.rs

@@ -112,8 +112,8 @@ fn toggle_leaderboard_screen(
     if !keys.just_pressed(KeyCode::KeyL) {
         return;
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
         closed_flag.0 = true;
         return;
     }
@@ -174,7 +174,7 @@ fn update_leaderboard_panel(
         return;
     }
     for entity in &screens {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
         spawn_leaderboard_screen(&mut commands, data.0.as_deref());
     }
 }
@@ -225,11 +225,11 @@ fn poll_opt_in_task(
     task_res.0 = None;
     match result {
         Ok(()) => {
-            toast.send(InfoToastEvent("Opted in to leaderboard".to_string()));
+            toast.write(InfoToastEvent("Opted in to leaderboard".to_string()));
         }
         Err(e) => {
             warn!("leaderboard opt-in failed: {e}");
-            toast.send(InfoToastEvent("Leaderboard update failed".to_string()));
+            toast.write(InfoToastEvent("Leaderboard update failed".to_string()));
         }
     }
 }
@@ -265,11 +265,11 @@ fn poll_opt_out_task(
     task_res.0 = None;
     match result {
         Ok(()) => {
-            toast.send(InfoToastEvent("Opted out of leaderboard".to_string()));
+            toast.write(InfoToastEvent("Opted out of leaderboard".to_string()));
         }
         Err(e) => {
             warn!("leaderboard opt-out failed: {e}");
-            toast.send(InfoToastEvent("Leaderboard update failed".to_string()));
+            toast.write(InfoToastEvent("Leaderboard update failed".to_string()));
         }
     }
 }
@@ -454,7 +454,7 @@ fn spawn_leaderboard_screen(commands: &mut Commands, entries: Option<&[Leaderboa
         });
 }
 
-fn header_cell(parent: &mut ChildBuilder, text: &str, width: f32) {
+fn header_cell(parent: &mut ChildSpawnerCommands, text: &str, width: f32) {
     parent.spawn((
         Text::new(text.to_string()),
         TextFont { font_size: 13.0, ..default() },
@@ -463,7 +463,7 @@ fn header_cell(parent: &mut ChildBuilder, text: &str, width: f32) {
     ));
 }
 
-fn data_cell(parent: &mut ChildBuilder, text: &str, width: f32, color: Color) {
+fn data_cell(parent: &mut ChildSpawnerCommands, text: &str, width: f32, color: Color) {
     parent.spawn((
         Text::new(text.to_string()),
         TextFont { font_size: 15.0, ..default() },

solitaire_engine/src/onboarding_plugin.rs

@@ -59,7 +59,7 @@ fn dismiss_on_any_input(
     path: Option<Res<SettingsStoragePath>>,
     screens: Query<Entity, With<OnboardingScreen>>,
 ) {
-    let Ok(entity) = screens.get_single() else {
+    let Ok(entity) = screens.single() else {
         return;
     };
     let pressed = keys.get_just_pressed().next().is_some()
@@ -67,7 +67,7 @@ fn dismiss_on_any_input(
     if !pressed {
         return;
     }
-    commands.entity(entity).despawn_recursive();
+    commands.entity(entity).despawn();
     settings.0.first_run_complete = true;
     persist(path.as_deref().map(|p| &p.0), &settings.0);
 }

solitaire_engine/src/pause_plugin.rs

@@ -90,12 +90,12 @@ fn toggle_pause(
     if let Some(ref mut d) = drag {
         if !d.is_idle() {
             d.clear();
-            changed.send(StateChangedEvent);
+            changed.write(StateChangedEvent);
             return;
         }
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
         paused.0 = false;
     } else {
         // Snapshot current level and streak at pause time.
@@ -146,7 +146,7 @@ fn handle_pause_draw_toggle(
                 }
             }
         }
-        changed.send(SettingsChangedEvent(settings.0.clone()));
+        changed.write(SettingsChangedEvent(settings.0.clone()));
     }
 }
 

solitaire_engine/src/profile_plugin.rs

@@ -42,8 +42,8 @@ fn toggle_profile_screen(
     if !keys.just_pressed(KeyCode::KeyP) {
         return;
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     } else {
         spawn_profile_screen(
             &mut commands,
@@ -246,7 +246,7 @@ fn spawn_profile_screen(
 }
 
 /// Spawn a fixed-height vertical spacer node.
-fn spawn_spacer(parent: &mut ChildBuilder, height_px: f32) {
+fn spawn_spacer(parent: &mut ChildSpawnerCommands, height_px: f32) {
     parent.spawn(Node {
         height: Val::Px(height_px),
         ..default()

solitaire_engine/src/progress_plugin.rs

@@ -88,9 +88,9 @@ fn award_xp_on_win(
         let used_undo = game.0.undo_count > 0;
         let amount = xp_for_win(ev.time_seconds, used_undo);
         let prev_level = progress.0.add_xp(amount);
-        xp_awarded.send(XpAwardedEvent { amount });
+        xp_awarded.write(XpAwardedEvent { amount });
         if progress.0.leveled_up_from(prev_level) {
-            levelups.send(LevelUpEvent {
+            levelups.write(LevelUpEvent {
                 previous_level: prev_level,
                 new_level: progress.0.level,
                 total_xp: progress.0.total_xp,

solitaire_engine/src/selection_plugin.rs

@@ -200,11 +200,11 @@ fn handle_selection_keys(
     if keys.just_pressed(KeyCode::Tab) {
         let next = cycle_next_pile(&available, selection.selected_pile.as_ref());
         if next.is_none() {
-            info_toast.send(InfoToastEvent("No cards to select".to_string()));
+            info_toast.write(InfoToastEvent("No cards to select".to_string()));
         } else if selection.selected_pile.is_some()
             && did_wrap(&available, selection.selected_pile.as_ref(), next.as_ref())
         {
-            info_toast.send(InfoToastEvent("Back to first card".to_string()));
+            info_toast.write(InfoToastEvent("Back to first card".to_string()));
         }
         selection.selected_pile = next;
         return;
@@ -236,7 +236,7 @@ fn handle_selection_keys(
                 // --- Priority 1: foundation move (single card) ---
                 let foundation_dest = try_foundation_dest(card, &game.0);
                 if let Some(dest) = foundation_dest {
-                    moves.send(MoveRequestEvent {
+                    moves.write(MoveRequestEvent {
                         from: pile.clone(),
                         to: dest,
                         count: 1,
@@ -260,7 +260,7 @@ fn handle_selection_keys(
                     if let Some((dest, count)) =
                         best_tableau_destination_for_stack(bottom, pile, &game.0, run_len)
                     {
-                        moves.send(MoveRequestEvent {
+                        moves.write(MoveRequestEvent {
                             from: pile.clone(),
                             to: dest,
                             count,
@@ -274,7 +274,7 @@ fn handle_selection_keys(
                 // Covers non-tableau sources (Waste, Foundation) that have no
                 // stack-move logic.
                 if let Some(dest) = best_destination(card, &game.0) {
-                    moves.send(MoveRequestEvent {
+                    moves.write(MoveRequestEvent {
                         from: pile.clone(),
                         to: dest,
                         count: 1,
@@ -343,7 +343,7 @@ fn update_selection_highlight(
 ) {
     // Always despawn any existing highlight first.
     for entity in &highlights {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     }
 
     let Some(ref pile) = selection.selected_pile else {

solitaire_engine/src/settings_plugin.rs

@@ -203,7 +203,7 @@ fn handle_volume_keys(
         return;
     }
     persist(&path, &settings.0);
-    changed.send(SettingsChangedEvent(settings.0.clone()));
+    changed.write(SettingsChangedEvent(settings.0.clone()));
 }
 
 /// Opens or closes the Settings panel when `O` is pressed.
@@ -256,11 +256,11 @@ fn sync_settings_panel_visibility(
         }
     } else {
         // Save the current scroll offset before despawning the panel.
-        if let Ok(sp) = scroll_nodes.get_single() {
+        if let Ok(sp) = scroll_nodes.single() {
             scroll_pos.0 = sp.offset_y;
         }
         for entity in &panels {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
     }
 }
@@ -402,8 +402,8 @@ fn handle_settings_buttons(
                 let after = settings.0.adjust_sfx_volume(-SFX_STEP);
                 if (before - after).abs() > f32::EPSILON {
                     persist(&path, &settings.0);
-                    changed.send(SettingsChangedEvent(settings.0.clone()));
+                    changed.write(SettingsChangedEvent(settings.0.clone()));
-                    if let Ok(mut t) = sfx_text.get_single_mut() {
+                    if let Ok(mut t) = sfx_text.single_mut() {
                         **t = format!("{:.2}", after);
                     }
                 }
@@ -413,8 +413,8 @@ fn handle_settings_buttons(
                 let after = settings.0.adjust_sfx_volume(SFX_STEP);
                 if (before - after).abs() > f32::EPSILON {
                     persist(&path, &settings.0);
-                    changed.send(SettingsChangedEvent(settings.0.clone()));
+                    changed.write(SettingsChangedEvent(settings.0.clone()));
-                    if let Ok(mut t) = sfx_text.get_single_mut() {
+                    if let Ok(mut t) = sfx_text.single_mut() {
                         **t = format!("{:.2}", after);
                     }
                 }
@@ -424,8 +424,8 @@ fn handle_settings_buttons(
                 let after = settings.0.adjust_music_volume(-SFX_STEP);
                 if (before - after).abs() > f32::EPSILON {
                     persist(&path, &settings.0);
-                    changed.send(SettingsChangedEvent(settings.0.clone()));
+                    changed.write(SettingsChangedEvent(settings.0.clone()));
-                    if let Ok(mut t) = music_text.get_single_mut() {
+                    if let Ok(mut t) = music_text.single_mut() {
                         **t = format!("{:.2}", after);
                     }
                 }
@@ -435,8 +435,8 @@ fn handle_settings_buttons(
                 let after = settings.0.adjust_music_volume(SFX_STEP);
                 if (before - after).abs() > f32::EPSILON {
                     persist(&path, &settings.0);
-                    changed.send(SettingsChangedEvent(settings.0.clone()));
+                    changed.write(SettingsChangedEvent(settings.0.clone()));
-                    if let Ok(mut t) = music_text.get_single_mut() {
+                    if let Ok(mut t) = music_text.single_mut() {
                         **t = format!("{:.2}", after);
                     }
                 }
@@ -447,8 +447,8 @@ fn handle_settings_buttons(
                     DrawMode::DrawThree => DrawMode::DrawOne,
                 };
                 persist(&path, &settings.0);
-                changed.send(SettingsChangedEvent(settings.0.clone()));
+                changed.write(SettingsChangedEvent(settings.0.clone()));
-                if let Ok(mut t) = draw_text.get_single_mut() {
+                if let Ok(mut t) = draw_text.single_mut() {
                     **t = draw_mode_label(&settings.0.draw_mode);
                 }
             }
@@ -459,8 +459,8 @@ fn handle_settings_buttons(
                     AnimSpeed::Instant => AnimSpeed::Normal,
                 };
                 persist(&path, &settings.0);
-                changed.send(SettingsChangedEvent(settings.0.clone()));
+                changed.write(SettingsChangedEvent(settings.0.clone()));
-                if let Ok(mut t) = anim_speed_text.get_single_mut() {
+                if let Ok(mut t) = anim_speed_text.single_mut() {
                     **t = anim_speed_label(&settings.0.animation_speed);
                 }
             }
@@ -471,31 +471,31 @@ fn handle_settings_buttons(
                     Theme::Dark => Theme::Green,
                 };
                 persist(&path, &settings.0);
-                changed.send(SettingsChangedEvent(settings.0.clone()));
+                changed.write(SettingsChangedEvent(settings.0.clone()));
-                if let Ok(mut t) = theme_text.get_single_mut() {
+                if let Ok(mut t) = theme_text.single_mut() {
                     **t = theme_label(&settings.0.theme);
                 }
             }
             SettingsButton::ToggleColorBlind => {
                 settings.0.color_blind_mode = !settings.0.color_blind_mode;
                 persist(&path, &settings.0);
-                changed.send(SettingsChangedEvent(settings.0.clone()));
+                changed.write(SettingsChangedEvent(settings.0.clone()));
-                if let Ok(mut t) = color_blind_text.get_single_mut() {
+                if let Ok(mut t) = color_blind_text.single_mut() {
                     **t = color_blind_label(settings.0.color_blind_mode);
                 }
             }
             SettingsButton::SelectCardBack(idx) => {
                 settings.0.selected_card_back = *idx;
                 persist(&path, &settings.0);
-                changed.send(SettingsChangedEvent(settings.0.clone()));
+                changed.write(SettingsChangedEvent(settings.0.clone()));
             }
             SettingsButton::SelectBackground(idx) => {
                 settings.0.selected_background = *idx;
                 persist(&path, &settings.0);
-                changed.send(SettingsChangedEvent(settings.0.clone()));
+                changed.write(SettingsChangedEvent(settings.0.clone()));
             }
             SettingsButton::SyncNow => {
-                manual_sync.send(ManualSyncRequestEvent);
+                manual_sync.write(ManualSyncRequestEvent);
             }
             SettingsButton::Done => {
                 screen.0 = false;
@@ -880,7 +880,7 @@ fn spawn_settings_panel(
         });
 }
 
-fn section_label(parent: &mut ChildBuilder, title: &str) {
+fn section_label(parent: &mut ChildSpawnerCommands, title: &str) {
     parent.spawn((
         Text::new(title),
         TextFont {
@@ -893,7 +893,7 @@ fn section_label(parent: &mut ChildBuilder, title: &str) {
 
 /// Generic volume row: `Label  0.80  [−]  [+]`
 fn volume_row<Marker: Component>(
-    parent: &mut ChildBuilder,
+    parent: &mut ChildSpawnerCommands,
     label: &str,
     value: f32,
     marker: Marker,
@@ -924,7 +924,7 @@ fn volume_row<Marker: Component>(
         });
 }
 
-fn icon_button(parent: &mut ChildBuilder, label: &str, action: SettingsButton) {
+fn icon_button(parent: &mut ChildSpawnerCommands, label: &str, action: SettingsButton) {
     parent
         .spawn((
             action,

solitaire_engine/src/stats_plugin.rs

@@ -137,7 +137,7 @@ fn update_stats_on_new_game(
             stats.0.record_abandoned();
             persist(&path, &stats.0, "abandoned game");
             if streak > 1 {
-                toast.send(InfoToastEvent(format!("Streak of {streak} broken!")));
+                toast.write(InfoToastEvent(format!("Streak of {streak} broken!")));
             }
         }
     }
@@ -163,7 +163,7 @@ fn handle_forfeit(
             stats.0.record_abandoned();
             persist(&path, &stats.0, "forfeit");
             if streak > 1 {
-                toast.send(InfoToastEvent(format!("Streak of {streak} broken!")));
+                toast.write(InfoToastEvent(format!("Streak of {streak} broken!")));
             }
         }
         // Reset auto-complete so the badge and chime don't carry over to the
@@ -171,8 +171,8 @@ fn handle_forfeit(
         if let Some(ref mut ac) = auto_complete {
             **ac = AutoCompleteState::default();
         }
-        toast.send(InfoToastEvent("Game forfeited".to_string()));
+        toast.write(InfoToastEvent("Game forfeited".to_string()));
-        new_game.send(NewGameRequestEvent::default());
+        new_game.write(NewGameRequestEvent::default());
     }
 }
 
@@ -187,8 +187,8 @@ fn toggle_stats_screen(
     if !keys.just_pressed(KeyCode::KeyS) {
         return;
     }
-    if let Ok(entity) = screens.get_single() {
+    if let Ok(entity) = screens.single() {
-        commands.entity(entity).despawn_recursive();
+        commands.entity(entity).despawn();
     } else {
         spawn_stats_screen(
             &mut commands,
@@ -349,7 +349,7 @@ fn spawn_stats_screen(
 
 /// Spawn a single stat cell: a large value label on top and a small grey
 /// descriptor below, inside a fixed-width column node with a [`StatsCell`] marker.
-fn spawn_stat_cell(parent: &mut ChildBuilder, value: &str, label: &str) {
+fn spawn_stat_cell(parent: &mut ChildSpawnerCommands, value: &str, label: &str) {
     parent
         .spawn((
             StatsCell,

solitaire_engine/src/time_attack_plugin.rs

@@ -60,7 +60,7 @@ fn handle_start_time_attack_request(
         return;
     }
     if progress.0.level < CHALLENGE_UNLOCK_LEVEL {
-        info_toast.send(InfoToastEvent(format!(
+        info_toast.write(InfoToastEvent(format!(
             "Time Attack unlocks at level {CHALLENGE_UNLOCK_LEVEL}"
         )));
         return;
@@ -70,7 +70,7 @@ fn handle_start_time_attack_request(
         remaining_secs: TIME_ATTACK_DURATION_SECS,
         wins: 0,
     };
-    new_game.send(NewGameRequestEvent {
+    new_game.write(NewGameRequestEvent {
         seed: None,
         mode: Some(GameMode::TimeAttack),
     });
@@ -93,7 +93,7 @@ fn advance_time_attack(
         let wins = session.wins;
         session.active = false;
         session.remaining_secs = 0.0;
-        ended.send(TimeAttackEndedEvent { wins });
+        ended.write(TimeAttackEndedEvent { wins });
     }
 }
 
@@ -108,7 +108,7 @@ fn auto_deal_on_time_attack_win(
             continue;
         }
         session.wins = session.wins.saturating_add(1);
-        new_game.send(NewGameRequestEvent {
+        new_game.write(NewGameRequestEvent {
             seed: None,
             mode: Some(GameMode::TimeAttack),
         });

solitaire_engine/src/weekly_goals_plugin.rs

@@ -92,7 +92,7 @@ fn evaluate_weekly_goals(
             any_change = true;
             if just_completed {
                 bonus_xp = bonus_xp.saturating_add(WEEKLY_GOAL_XP);
-                completions.send(WeeklyGoalCompletedEvent {
+                completions.write(WeeklyGoalCompletedEvent {
                     goal_id: def.id.to_string(),
                     description: def.description.to_string(),
                 });
@@ -101,10 +101,10 @@ fn evaluate_weekly_goals(
     }
 
     if bonus_xp > 0 {
-        xp_awarded.send(XpAwardedEvent { amount: bonus_xp });
+        xp_awarded.write(XpAwardedEvent { amount: bonus_xp });
         let prev_level = progress.0.add_xp(bonus_xp);
         if progress.0.leveled_up_from(prev_level) {
-            levelups.send(LevelUpEvent {
+            levelups.write(LevelUpEvent {
                 previous_level: prev_level,
                 new_level: progress.0.level,
                 total_xp: progress.0.total_xp,

solitaire_engine/src/win_summary_plugin.rs

@@ -255,7 +255,7 @@ fn cache_win_data(
         pending.challenge_level = challenge_level;
 
         if is_new_record {
-            toast.send(InfoToastEvent("New Record!".to_string()));
+            toast.write(InfoToastEvent("New Record!".to_string()));
         }
     }
     for ev in xp.read() {
@@ -321,7 +321,7 @@ fn spawn_win_summary_after_delay(
         *delay = Some(WIN_SUMMARY_DELAY_SECS);
         // Clear any stale overlay from a previous win.
         for entity in &overlays {
-            commands.entity(entity).despawn_recursive();
+            commands.entity(entity).despawn();
         }
     }
 
@@ -362,9 +362,9 @@ fn handle_win_summary_buttons(
             WinSummaryButton::PlayAgain => {
                 // Despawn the modal.
                 for entity in &overlays {
-                    commands.entity(entity).despawn_recursive();
+                    commands.entity(entity).despawn();
                 }
-                new_game.send(NewGameRequestEvent::default());
+                new_game.write(NewGameRequestEvent::default());
             }
         }
     }
@@ -543,7 +543,7 @@ const MAX_ACHIEVEMENTS_SHOWN: usize = 3;
 /// Shows at most [`MAX_ACHIEVEMENTS_SHOWN`] names. When more achievements were
 /// unlocked than the cap, appends a "...and N more" line so the player knows
 /// there are additional unlocks visible on the achievements screen.
-fn spawn_achievements_section(card: &mut ChildBuilder, names: &[String]) {
+fn spawn_achievements_section(card: &mut ChildSpawnerCommands, names: &[String]) {
     card.spawn((
         Text::new("Achievements Unlocked"),
         TextFont { font_size: 18.0, ..default() },

solitaire_server/src/lib.rs

@@ -64,9 +64,7 @@ fn build_router_inner(pool: SqlitePool, rate_limit: bool) -> Router {
                 .finish()
                 .expect("invalid governor config"),
         );
-        auth_routes.layer(GovernorLayer {
+        auth_routes.layer(GovernorLayer::new(governor_conf))
-            config: governor_conf,
-        })
     } else {
         auth_routes
     };

solitaire_server/src/middleware.rs

@@ -100,7 +100,6 @@ pub fn validate_refresh_token(token: &str, secret: &str) -> Result<Claims, AppEr
 // Axum extractor — allows handlers to receive AuthenticatedUser directly
 // ---------------------------------------------------------------------------
 
-#[axum::async_trait]
 impl<S> FromRequestParts<S> for AuthenticatedUser
 where
     S: Send + Sync,