diff --git a/Cargo.toml b/Cargo.toml
index 17337df..d8f1e93 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,6 +18,21 @@ version = "0.1.0"
 license = "MIT"
 rust-version = "1.95"
 
+# Pedantic correctness lints applied across every member crate via
+# `[lints] workspace = true`. `unsafe_code` is "deny" rather than "forbid"
+# so the three Android JNI FFI modules can opt back in with a scoped
+# `#![allow(unsafe_code)]` — `forbid` cannot be locally overridden, which
+# would break the Android build. Pure crates (core, sync) carry no `unsafe`
+# and so remain effectively forbidden in practice.
+[workspace.lints.rust]
+unsafe_code = "deny"
+single_use_lifetimes = "warn"
+trivial_casts = "warn"
+unused_lifetimes = "warn"
+unused_qualifications = "warn"
+variant_size_differences = "warn"
+unexpected_cfgs = "warn"
+
 [workspace.dependencies]
 serde       = { version = "1", features = ["derive"] }
 serde_json  = "1"
diff --git a/solitaire_app/Cargo.toml b/solitaire_app/Cargo.toml
index 2556920..124a5ea 100644
--- a/solitaire_app/Cargo.toml
+++ b/solitaire_app/Cargo.toml
@@ -99,3 +99,6 @@ icon = "@mipmap/ic_launcher"
 # in portrait orientation. Remove (or add a landscape layout) before
 # enabling auto-rotate.
 orientation = "portrait"
+
+[lints]
+workspace = true
diff --git a/solitaire_app/src/lib.rs b/solitaire_app/src/lib.rs
index 0082814..f0433b6 100644
--- a/solitaire_app/src/lib.rs
+++ b/solitaire_app/src/lib.rs
@@ -144,7 +144,7 @@ fn build_app_with_settings(
                     // Android windows always fill the screen; max_width/max_height
                     // default to 0.0, which panics Bevy's clamp when min > max.
                     #[cfg(not(target_os = "android"))]
-                    resize_constraints: bevy::window::WindowResizeConstraints {
+                    resize_constraints: WindowResizeConstraints {
                         min_width: 800.0,
                         min_height: 600.0,
                         ..default()
@@ -166,7 +166,7 @@ fn build_app_with_settings(
             // default makes it walk *out* of the APK's assets root and
             // all loads fail silently — which is what produced the
             // solid-red card-back fallback in the v0.22.3 screenshot.
-            .set(bevy::asset::AssetPlugin {
+            .set(AssetPlugin {
                 #[cfg(not(target_os = "android"))]
                 file_path: "../assets".to_string(),
                 ..default()
diff --git a/solitaire_assetgen/Cargo.toml b/solitaire_assetgen/Cargo.toml
index f7c2e85..b953e5f 100644
--- a/solitaire_assetgen/Cargo.toml
+++ b/solitaire_assetgen/Cargo.toml
@@ -30,3 +30,6 @@ path = "src/bin/gen_seeds.rs"
 [[bin]]
 name = "gen_difficulty_seeds"
 path = "src/bin/gen_difficulty_seeds.rs"
+
+[lints]
+workspace = true
diff --git a/solitaire_core/Cargo.toml b/solitaire_core/Cargo.toml
index 555c1e8..35a7cb3 100644
--- a/solitaire_core/Cargo.toml
+++ b/solitaire_core/Cargo.toml
@@ -16,3 +16,6 @@ serde     = { workspace = true }
 thiserror = { workspace = true }
 klondike  = { workspace = true }
 card_game = { workspace = true }
+
+[lints]
+workspace = true
diff --git a/solitaire_data/Cargo.toml b/solitaire_data/Cargo.toml
index 89342e7..f1836dc 100644
--- a/solitaire_data/Cargo.toml
+++ b/solitaire_data/Cargo.toml
@@ -47,3 +47,6 @@ sqlx             = { workspace = true }
 jsonwebtoken     = { workspace = true }
 uuid             = { workspace = true }
 chrono           = { workspace = true }
+
+[lints]
+workspace = true
diff --git a/solitaire_data/src/android_keystore.rs b/solitaire_data/src/android_keystore.rs
index 05de32a..f9e49a0 100644
--- a/solitaire_data/src/android_keystore.rs
+++ b/solitaire_data/src/android_keystore.rs
@@ -1,3 +1,8 @@
+// JNI FFI requires `unsafe` to reconstruct `JavaVM` / `JByteArray` handles
+// from raw pointers handed over by the Android runtime. Scoped to this
+// module so the rest of the workspace stays `deny(unsafe_code)`.
+#![allow(unsafe_code)]
+
 /// Android Keystore token storage via JNI.
 ///
 /// Tokens are serialised to JSON, encrypted with AES-256/GCM/NoPadding using a
diff --git a/solitaire_data/src/lib.rs b/solitaire_data/src/lib.rs
index 415597e..4ae1554 100644
--- a/solitaire_data/src/lib.rs
+++ b/solitaire_data/src/lib.rs
@@ -58,7 +58,7 @@ pub trait SyncProvider: Send + Sync {
     /// so backends without a server (e.g. `LocalOnlyProvider`) are
     /// silently no-op'd by the engine's push-on-win system, matching
     /// the same pattern `pull` / `push` follow.
-    async fn push_replay(&self, _replay: &crate::replay::Replay) -> Result<String, SyncError> {
+    async fn push_replay(&self, _replay: &Replay) -> Result<String, SyncError> {
         Err(SyncError::UnsupportedPlatform)
     }
 }
@@ -94,7 +94,7 @@ impl SyncProvider for Box<dyn SyncProvider + Send + Sync> {
     async fn delete_account(&self) -> Result<(), SyncError> {
         (**self).delete_account().await
     }
-    async fn push_replay(&self, replay: &crate::replay::Replay) -> Result<String, SyncError> {
+    async fn push_replay(&self, replay: &Replay) -> Result<String, SyncError> {
         (**self).push_replay(replay).await
     }
 }
diff --git a/solitaire_engine/Cargo.toml b/solitaire_engine/Cargo.toml
index 306c7e0..cf0ed78 100644
--- a/solitaire_engine/Cargo.toml
+++ b/solitaire_engine/Cargo.toml
@@ -52,3 +52,6 @@ web-sys       = { version = "0.3", features = ["Storage", "Window"] }
 async-trait = { workspace = true }
 tempfile    = { workspace = true }
 solitaire_core = { workspace = true, features = ["test-support"] }
+
+[lints]
+workspace = true
diff --git a/solitaire_engine/src/achievement_plugin.rs b/solitaire_engine/src/achievement_plugin.rs
index 7c7a882..00151ed 100644
--- a/solitaire_engine/src/achievement_plugin.rs
+++ b/solitaire_engine/src/achievement_plugin.rs
@@ -116,7 +116,7 @@ impl Plugin for AchievementPlugin {
             // achievements-scroll system also runs cleanly under
             // `MinimalPlugins` in tests.
             .add_message::<MouseWheel>()
-            .add_message::<bevy::input::touch::TouchInput>()
+            .add_message::<TouchInput>()
             // Run after GameMutation (so GameWonEvent is available), after
             // StatsUpdate (so stats reflect this win), and after ProgressUpdate
             // (so daily_challenge_streak is up to date for daily_devotee).
@@ -671,7 +671,7 @@ mod tests {
             .add_plugins(AchievementPlugin::headless());
         // StatsPlugin's UI toggle system reads ButtonInput<KeyCode>; under
         // MinimalPlugins it isn't auto-registered.
-        app.init_resource::<bevy::input::ButtonInput<KeyCode>>();
+        app.init_resource::<ButtonInput<KeyCode>>();
         app.update();
         app
     }
@@ -819,7 +819,7 @@ mod tests {
         app.world_mut()
             .resource_mut::<GameStateResource>()
             .0
-            .set_test_draw_mode(solitaire_core::DrawStockConfig::DrawThree);
+            .set_test_draw_mode(DrawStockConfig::DrawThree);
 
         app.world_mut().write_message(GameWonEvent {
             score: 500,
@@ -868,7 +868,7 @@ mod tests {
         app.world_mut()
             .resource_mut::<GameStateResource>()
             .0
-            .set_test_draw_mode(solitaire_core::DrawStockConfig::DrawThree);
+            .set_test_draw_mode(DrawStockConfig::DrawThree);
 
         app.world_mut().write_message(GameWonEvent {
             score: 500,
@@ -912,7 +912,7 @@ mod tests {
         // Put the active game in Zen mode. evaluate_on_win reads
         // GameStateResource.mode directly to populate last_win_is_zen.
         app.world_mut().resource_mut::<GameStateResource>().0.mode =
-            solitaire_core::game_state::GameMode::Zen;
+            GameMode::Zen;
 
         app.world_mut().write_message(GameWonEvent {
             score: 0,
@@ -946,7 +946,7 @@ mod tests {
         // Default GameMode is Classic; assert and rely on it.
         assert_eq!(
             app.world().resource::<GameStateResource>().0.mode,
-            solitaire_core::game_state::GameMode::Classic
+            GameMode::Classic
         );
 
         app.world_mut().write_message(GameWonEvent {
@@ -1250,7 +1250,7 @@ mod tests {
             .add_plugins(crate::progress_plugin::ProgressPlugin::headless())
             .add_plugins(crate::settings_plugin::SettingsPlugin::headless())
             .add_plugins(AchievementPlugin::headless());
-        app.init_resource::<bevy::input::ButtonInput<KeyCode>>();
+        app.init_resource::<ButtonInput<KeyCode>>();
         app.update();
         app
     }
diff --git a/solitaire_engine/src/android_clipboard.rs b/solitaire_engine/src/android_clipboard.rs
index eb94b87..d829cfe 100644
--- a/solitaire_engine/src/android_clipboard.rs
+++ b/solitaire_engine/src/android_clipboard.rs
@@ -1,3 +1,8 @@
+// JNI FFI requires `unsafe` to reconstruct `JavaVM` / `JObject` handles from
+// raw pointers handed over by the Android runtime. Scoped to this module so
+// the rest of the workspace stays `deny(unsafe_code)`.
+#![allow(unsafe_code)]
+
 /// Android clipboard bridge via JNI.
 ///
 /// Writes text to the system clipboard by calling into `ClipboardManager`
diff --git a/solitaire_engine/src/animation_plugin.rs b/solitaire_engine/src/animation_plugin.rs
index 87d6d68..eb31866 100644
--- a/solitaire_engine/src/animation_plugin.rs
+++ b/solitaire_engine/src/animation_plugin.rs
@@ -354,7 +354,7 @@ fn handle_win_cascade(
             end: target.truncate(),
             elapsed: 0.0,
             duration,
-            curve: crate::card_animation::MotionCurve::Expressive,
+            curve: MotionCurve::Expressive,
             delay: i as f32 * step,
             start_z: start.z,
             end_z: target.z,
diff --git a/solitaire_engine/src/assets/sources.rs b/solitaire_engine/src/assets/sources.rs
index 37ffeb2..051991d 100644
--- a/solitaire_engine/src/assets/sources.rs
+++ b/solitaire_engine/src/assets/sources.rs
@@ -115,6 +115,10 @@ macro_rules! embed_classic_svg {
 }
 
 /// Every Dark-theme SVG file bundled into the binary.
+// The `as &[u8]` in `embed_dark_svg!` coerces each fixed-size
+// `&[u8; N]` (N varies per file) to a uniform `&[u8]` so the tuples fit
+// this array type. The cast is load-bearing, not trivial.
+#[allow(trivial_casts)]
 const DARK_THEME_SVGS: &[(&str, &[u8])] = &[
     embed_dark_svg!("back.svg"),
     embed_dark_svg!("clubs_ace.svg"),
@@ -172,6 +176,8 @@ const DARK_THEME_SVGS: &[(&str, &[u8])] = &[
 ];
 
 /// Every Classic-theme SVG file bundled into the binary.
+// See `DARK_THEME_SVGS`: the `as &[u8]` cast is load-bearing.
+#[allow(trivial_casts)]
 const CLASSIC_THEME_SVGS: &[(&str, &[u8])] = &[
     embed_classic_svg!("back.svg"),
     embed_classic_svg!("clubs_ace.svg"),
diff --git a/solitaire_engine/src/assets/svg_loader.rs b/solitaire_engine/src/assets/svg_loader.rs
index cb912a3..b04791d 100644
--- a/solitaire_engine/src/assets/svg_loader.rs
+++ b/solitaire_engine/src/assets/svg_loader.rs
@@ -192,7 +192,7 @@ fn shared_fontdb() -> Arc<fontdb::Database> {
 fn bundled_font_resolver() -> usvg::FontResolver<'static> {
     use usvg::FontResolver;
 
-    usvg::FontResolver {
+    FontResolver {
         select_font: Box::new(|_font, db| db.faces().next().map(|face| face.id)),
         select_fallback: FontResolver::default_fallback_selector(),
     }
@@ -282,7 +282,7 @@ mod tests {
     /// tightens.
     #[test]
     fn settings_satisfies_loader_bounds() {
-        fn assert_loader_settings<T: Default + serde::Serialize + serde::de::DeserializeOwned>() {}
+        fn assert_loader_settings<T: Default + Serialize + serde::de::DeserializeOwned>() {}
         assert_loader_settings::<SvgLoaderSettings>();
     }
 }
diff --git a/solitaire_engine/src/auto_complete_plugin.rs b/solitaire_engine/src/auto_complete_plugin.rs
index 68df902..b73efae 100644
--- a/solitaire_engine/src/auto_complete_plugin.rs
+++ b/solitaire_engine/src/auto_complete_plugin.rs
@@ -177,7 +177,7 @@ mod tests {
             .add_plugins(GamePlugin)
             .add_plugins(TablePlugin)
             .add_plugins(AutoCompletePlugin);
-        app.init_resource::<bevy::input::ButtonInput<KeyCode>>();
+        app.init_resource::<ButtonInput<KeyCode>>();
         app.update();
         app
     }
diff --git a/solitaire_engine/src/avatar_plugin.rs b/solitaire_engine/src/avatar_plugin.rs
index e380c06..9aee3ab 100644
--- a/solitaire_engine/src/avatar_plugin.rs
+++ b/solitaire_engine/src/avatar_plugin.rs
@@ -36,7 +36,7 @@ pub struct AvatarFetchEvent {
     pub url: String,
 }
 
-impl bevy::prelude::Message for AvatarFetchEvent {}
+impl Message for AvatarFetchEvent {}
 
 /// In-flight avatar download task. Returns the raw image bytes on success,
 /// or `None` on any network / decode error.
diff --git a/solitaire_engine/src/card_animation/interaction.rs b/solitaire_engine/src/card_animation/interaction.rs
index 7e18936..1827758 100644
--- a/solitaire_engine/src/card_animation/interaction.rs
+++ b/solitaire_engine/src/card_animation/interaction.rs
@@ -73,7 +73,7 @@ pub struct HoverState {
 #[derive(Debug, Clone)]
 pub enum BufferedInput {
     Move {
-        from: crate::events::MoveRequestEvent,
+        from: MoveRequestEvent,
     },
     Draw,
     Undo,
diff --git a/solitaire_engine/src/card_plugin.rs b/solitaire_engine/src/card_plugin.rs
index ab89cfd..f371b95 100644
--- a/solitaire_engine/src/card_plugin.rs
+++ b/solitaire_engine/src/card_plugin.rs
@@ -483,7 +483,7 @@ impl Plugin for CardPlugin {
                     update_stock_empty_indicator.after(GameMutation),
                     update_stock_count_badge
                         .after(GameMutation)
-                        .run_if(resource_changed::<crate::GameStateResource>),
+                        .run_if(resource_changed::<GameStateResource>),
                     collect_resize_events.after(LayoutSystem::UpdateOnResize),
                     snap_cards_on_window_resize.after(collect_resize_events),
                 ),
@@ -2431,7 +2431,7 @@ fn update_tableau_fan_frac(
     .into_iter()
     .map(|tableau| {
         game.0
-            .pile(solitaire_core::KlondikePile::Tableau(tableau))
+            .pile(KlondikePile::Tableau(tableau))
             .into_iter()
             .filter(|(_, face_up)| *face_up)
             .count()
@@ -2566,7 +2566,7 @@ mod tests {
     #[test]
     fn card_positions_includes_all_52_cards_at_game_start() {
         // At game start waste is empty, so all 52 cards are across stock + tableau.
-        let g = GameState::new(42, solitaire_core::DrawStockConfig::DrawOne);
+        let g = GameState::new(42, DrawStockConfig::DrawOne);
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
         assert_eq!(positions.len(), 52);
@@ -2580,7 +2580,7 @@ mod tests {
         for _ in 0..3 {
             let _ = g.draw();
         }
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             g.waste_cards().iter().map(|c| c.0.clone()).collect();
         assert_eq!(waste_ids.len(), 3);
 
@@ -2624,7 +2624,7 @@ mod tests {
             "need at least 3 waste cards for this test"
         );
 
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             waste_pile.iter().map(|c| c.0.clone()).collect();
 
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
@@ -2677,7 +2677,7 @@ mod tests {
         let count = waste_pile.len();
         assert!(count >= 2, "need at least 2 waste cards");
 
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             waste_pile.iter().map(|c| c.0.clone()).collect();
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
@@ -2715,7 +2715,7 @@ mod tests {
         for _ in 0..3 {
             let _ = g.draw();
         }
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             g.waste_cards().iter().map(|c| c.0.clone()).collect();
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
@@ -2740,7 +2740,7 @@ mod tests {
 
     #[test]
     fn card_positions_tableau_cards_are_fanned_downward() {
-        let g = GameState::new(42, solitaire_core::DrawStockConfig::DrawOne);
+        let g = GameState::new(42, DrawStockConfig::DrawOne);
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
 
@@ -3083,7 +3083,7 @@ mod tests {
 
     #[test]
     fn facedown_cards_use_tighter_fan_than_uniform_faceup_fan() {
-        let g = GameState::new(42, solitaire_core::DrawStockConfig::DrawOne);
+        let g = GameState::new(42, DrawStockConfig::DrawOne);
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
 
@@ -3153,7 +3153,7 @@ mod tests {
 
     fn fire_window_resize(app: &mut App, width: f32, height: f32) {
         // Any Entity will do — the snap system reads only width/height.
-        let window = bevy::ecs::entity::Entity::from_raw_u32(0)
+        let window = Entity::from_raw_u32(0)
             .expect("Entity::from_raw_u32(0) is a valid placeholder");
         app.world_mut().write_message(WindowResized {
             window,
@@ -3171,9 +3171,9 @@ mod tests {
         // entity IDs must remain alive.
         let mut app = app();
 
-        let labels_before: std::collections::HashSet<bevy::prelude::Entity> = app
+        let labels_before: HashSet<Entity> = app
             .world_mut()
-            .query_filtered::<bevy::prelude::Entity, With<CardLabel>>()
+            .query_filtered::<Entity, With<CardLabel>>()
             .iter(app.world())
             .collect();
         assert!(
@@ -3184,9 +3184,9 @@ mod tests {
         fire_window_resize(&mut app, 1024.0, 768.0);
         advance_past_resize_throttle(&mut app);
 
-        let labels_after: std::collections::HashSet<bevy::prelude::Entity> = app
+        let labels_after: HashSet<Entity> = app
             .world_mut()
-            .query_filtered::<bevy::prelude::Entity, With<CardLabel>>()
+            .query_filtered::<Entity, With<CardLabel>>()
             .iter(app.world())
             .collect();
 
@@ -3336,9 +3336,9 @@ mod tests {
 
         // Each shadow's parent must be a CardEntity, so the child relation
         // is wired correctly.
-        let cards: HashSet<bevy::prelude::Entity> = app
+        let cards: HashSet<Entity> = app
             .world_mut()
-            .query_filtered::<bevy::prelude::Entity, With<CardEntity>>()
+            .query_filtered::<Entity, With<CardEntity>>()
             .iter(app.world())
             .collect();
         let mut q = app
@@ -3423,7 +3423,7 @@ mod tests {
         let card_entity = {
             let mut q = app
                 .world_mut()
-                .query::<(bevy::prelude::Entity, &CardEntity)>();
+                .query::<(Entity, &CardEntity)>();
             q.iter(app.world())
                 .find(|(_, c)| c.card == *card)
                 .map(|(e, _)| e)
@@ -3533,7 +3533,7 @@ mod tests {
 
     #[test]
     fn stock_card_count_helper_reads_zero_for_empty_stock() {
-        let g = GameState::new(42, solitaire_core::DrawStockConfig::DrawOne);
+        let g = GameState::new(42, DrawStockConfig::DrawOne);
         let mut g_empty_stock = g.clone();
         g_empty_stock.set_test_stock_cards(Vec::new());
         assert_eq!(stock_card_count(&g_empty_stock), 0);
@@ -3553,9 +3553,9 @@ mod tests {
         // Allocate five different strong handles by passing each a
         // distinct dummy `Image`. We never render these; we only
         // compare ids.
-        let mut images = bevy::asset::Assets::<bevy::image::Image>::default();
-        let backs: [Handle<bevy::image::Image>; 5] =
-            std::array::from_fn(|_| images.add(bevy::image::Image::default()));
+        let mut images = Assets::<Image>::default();
+        let backs: [Handle<Image>; 5] =
+            std::array::from_fn(|_| images.add(Image::default()));
         CardImageSet {
             faces: std::array::from_fn(|_| std::array::from_fn(|_| Handle::default())),
             backs,
@@ -3569,8 +3569,8 @@ mod tests {
         // card must render with the theme's back regardless of which
         // legacy back the player picked in Settings.
         let mut set = image_set_with_distinct_back_handles();
-        let mut images = bevy::asset::Assets::<bevy::image::Image>::default();
-        let theme_back: Handle<bevy::image::Image> = images.add(bevy::image::Image::default());
+        let mut images = Assets::<Image>::default();
+        let theme_back: Handle<Image> = images.add(Image::default());
         set.theme_back = Some(theme_back.clone());
 
         let face_down = make_card(Suit::Spades, Rank::Ace);
@@ -3634,8 +3634,8 @@ mod tests {
         use std::collections::HashMap;
 
         let mut set = image_set_with_distinct_back_handles();
-        let mut images = bevy::asset::Assets::<bevy::image::Image>::default();
-        let theme_back: Handle<bevy::image::Image> = images.add(bevy::image::Image::default());
+        let mut images = Assets::<Image>::default();
+        let theme_back: Handle<Image> = images.add(Image::default());
 
         let theme = CardTheme {
             meta: ThemeMeta {
@@ -3645,7 +3645,7 @@ mod tests {
                 version: "0".into(),
                 card_aspect: (2, 3),
             },
-            faces: HashMap::<CardKey, Handle<bevy::image::Image>>::new(),
+            faces: HashMap::<CardKey, Handle<Image>>::new(),
             back: theme_back.clone(),
         };
 
@@ -3813,7 +3813,7 @@ mod tests {
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
 
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             g.waste_cards().iter().map(|c| c.0.clone()).collect();
 
         let mut waste_zs: Vec<f32> = positions
@@ -3863,7 +3863,7 @@ mod tests {
 
         let stock_x = layout.pile_positions[&KlondikePile::Stock].x;
 
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             g.waste_cards().iter().map(|c| c.0.clone()).collect();
 
         let mut waste_positions: Vec<_> = card_positions(&g, &layout)
@@ -3893,7 +3893,7 @@ mod tests {
         let layout = crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true);
         let positions = card_positions(&g, &layout);
 
-        let waste_ids: std::collections::HashSet<Card> =
+        let waste_ids: HashSet<Card> =
             g.waste_cards().iter().map(|c| c.0.clone()).collect();
 
         let mut waste_zs: Vec<f32> = positions
diff --git a/solitaire_engine/src/cursor_plugin.rs b/solitaire_engine/src/cursor_plugin.rs
index 8bd4987..d475006 100644
--- a/solitaire_engine/src/cursor_plugin.rs
+++ b/solitaire_engine/src/cursor_plugin.rs
@@ -80,7 +80,7 @@ impl Plugin for CursorPlugin {
             Update,
             (
                 update_cursor_icon,
-                update_drop_highlights.run_if(resource_changed::<crate::resources::DragState>),
+                update_drop_highlights.run_if(resource_changed::<DragState>),
                 update_drop_target_overlays,
             ),
         );
diff --git a/solitaire_engine/src/feedback_anim_plugin.rs b/solitaire_engine/src/feedback_anim_plugin.rs
index 5ef2689..b51f28b 100644
--- a/solitaire_engine/src/feedback_anim_plugin.rs
+++ b/solitaire_engine/src/feedback_anim_plugin.rs
@@ -639,7 +639,7 @@ fn lerp_color(from: Color, to: Color, t: f32) -> Color {
 fn pile_cards(
     game: &solitaire_core::game_state::GameState,
     pile: &KlondikePile,
-) -> Vec<(solitaire_core::Card, bool)> {
+) -> Vec<(Card, bool)> {
     match pile {
         KlondikePile::Stock => game.waste_cards(),
         _ => game.pile(*pile),
diff --git a/solitaire_engine/src/game_plugin.rs b/solitaire_engine/src/game_plugin.rs
index 3ccdeab..19e20ed 100644
--- a/solitaire_engine/src/game_plugin.rs
+++ b/solitaire_engine/src/game_plugin.rs
@@ -201,7 +201,7 @@ impl Plugin for GamePlugin {
             .add_message::<StateChangedEvent>()
             .add_message::<crate::events::MoveRejectedEvent>()
             .add_message::<GameWonEvent>()
-            .add_message::<crate::events::CardFlippedEvent>()
+            .add_message::<CardFlippedEvent>()
             .add_message::<crate::events::AchievementUnlockedEvent>()
             .add_message::<FoundationCompletedEvent>()
             .add_message::<InfoToastEvent>()
@@ -530,7 +530,7 @@ fn handle_new_game(
         // hides that information and reads naturally as "dealt from the
         // deck." Skipped when LayoutResource isn't present (headless tests).
         if let Some(layout) = layout.as_ref()
-            && let Some(stock) = layout.0.pile_positions.get(&solitaire_core::KlondikePile::Stock)
+            && let Some(stock) = layout.0.pile_positions.get(&KlondikePile::Stock)
         {
             for mut tx in &mut card_transforms {
                 tx.translation.x = stock.x;
@@ -868,7 +868,7 @@ fn handle_move(
     mut game: ResMut<GameStateResource>,
     mut changed: MessageWriter<StateChangedEvent>,
     mut won: MessageWriter<GameWonEvent>,
-    mut flipped: MessageWriter<crate::events::CardFlippedEvent>,
+    mut flipped: MessageWriter<CardFlippedEvent>,
     mut foundation_done: MessageWriter<FoundationCompletedEvent>,
     mut recording: ResMut<RecordingReplay>,
     path: Option<Res<GameStatePath>>,
@@ -909,7 +909,7 @@ fn handle_move(
                         .last()
                         .is_some_and(|c| c.0 == fcard && c.1)
                 {
-                    flipped.write(crate::events::CardFlippedEvent(fcard));
+                    flipped.write(CardFlippedEvent(fcard));
                 }
                 // If this move landed on a foundation pile and that pile is
                 // now complete (Ace → King, 13 cards), fire the per-suit
@@ -1530,7 +1530,7 @@ mod tests {
     // Persistence tests
     // -----------------------------------------------------------------------
 
-    fn tmp_gs_path(name: &str) -> std::path::PathBuf {
+    fn tmp_gs_path(name: &str) -> PathBuf {
         std::env::temp_dir().join(format!("engine_test_gs_{name}.json"))
     }
 
@@ -1684,7 +1684,7 @@ mod tests {
 
         let events = app
             .world()
-            .resource::<Messages<crate::events::CardFlippedEvent>>();
+            .resource::<Messages<CardFlippedEvent>>();
         let mut cursor = events.get_cursor();
         let fired: Vec<_> = cursor.read(events).collect();
         assert!(
diff --git a/solitaire_engine/src/help_plugin.rs b/solitaire_engine/src/help_plugin.rs
index 6640561..a22950a 100644
--- a/solitaire_engine/src/help_plugin.rs
+++ b/solitaire_engine/src/help_plugin.rs
@@ -51,7 +51,7 @@ impl Plugin for HelpPlugin {
             // plugin under `DefaultPlugins`; register them explicitly so
             // scroll systems run cleanly under `MinimalPlugins` in tests.
             .add_message::<MouseWheel>()
-            .add_message::<bevy::input::touch::TouchInput>()
+            .add_message::<TouchInput>()
             .add_systems(
                 Update,
                 (
diff --git a/solitaire_engine/src/home_plugin.rs b/solitaire_engine/src/home_plugin.rs
index fd8d89f..97e151c 100644
--- a/solitaire_engine/src/home_plugin.rs
+++ b/solitaire_engine/src/home_plugin.rs
@@ -1878,7 +1878,7 @@ mod tests {
 
         let states: Vec<(HomeMode, bool)> = app
             .world_mut()
-            .query::<(&HomeModeCard, bevy::ecs::query::Has<Disabled>)>()
+            .query::<(&HomeModeCard, Has<Disabled>)>()
             .iter(app.world())
             .map(|(c, d)| (c.0, d))
             .collect();
diff --git a/solitaire_engine/src/input_plugin.rs b/solitaire_engine/src/input_plugin.rs
index f2ea1d9..f1ee247 100644
--- a/solitaire_engine/src/input_plugin.rs
+++ b/solitaire_engine/src/input_plugin.rs
@@ -2428,8 +2428,8 @@ mod tests {
         app.init_resource::<HintSolverConfig>();
         app.init_resource::<crate::pending_hint::PendingHintTask>();
         app.init_resource::<ButtonInput<KeyCode>>();
-        app.insert_resource(crate::layout::LayoutResource(
-            crate::layout::compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true),
+        app.insert_resource(LayoutResource(
+            compute_layout(Vec2::new(1280.0, 800.0), 0.0, 0.0, true),
         ));
         app.insert_resource(GameStateResource(GameState::new(42, DrawStockConfig::DrawOne)));
         app.add_systems(Update, handle_keyboard_hint);
diff --git a/solitaire_engine/src/layout.rs b/solitaire_engine/src/layout.rs
index 8ca000e..4863e29 100644
--- a/solitaire_engine/src/layout.rs
+++ b/solitaire_engine/src/layout.rs
@@ -745,7 +745,7 @@ mod tests {
         );
         // The HUD band top clearance (distance from window top to card top)
         // must match as well — this is the quantity directly visible in Bug 2.
-        let card_top = |layout: &super::Layout| {
+        let card_top = |layout: &Layout| {
             layout.pile_positions[&KlondikePile::Stock].y + layout.card_size.y / 2.0
         };
         assert!(
diff --git a/solitaire_engine/src/leaderboard_plugin.rs b/solitaire_engine/src/leaderboard_plugin.rs
index d4cb1ec..503822d 100644
--- a/solitaire_engine/src/leaderboard_plugin.rs
+++ b/solitaire_engine/src/leaderboard_plugin.rs
@@ -862,7 +862,7 @@ fn handle_display_name_confirm(
                 .leaderboard_display_name
                 .clone()
                 .unwrap_or_else(|| {
-                    if let solitaire_data::settings::SyncBackend::SolitaireServer {
+                    if let SyncBackend::SolitaireServer {
                         ref username,
                         ..
                     } = settings.0.sync_backend
@@ -1091,7 +1091,7 @@ mod tests {
             .add_plugins(crate::achievement_plugin::AchievementPlugin::headless())
             .add_plugins(SyncPlugin::new(NoOpProvider))
             .add_plugins(LeaderboardPlugin);
-        app.init_resource::<bevy::input::ButtonInput<KeyCode>>();
+        app.init_resource::<ButtonInput<KeyCode>>();
         app.update();
         app
     }
diff --git a/solitaire_engine/src/replay_overlay/tests.rs b/solitaire_engine/src/replay_overlay/tests.rs
index 8364d5b..fbd18e4 100644
--- a/solitaire_engine/src/replay_overlay/tests.rs
+++ b/solitaire_engine/src/replay_overlay/tests.rs
@@ -2312,8 +2312,8 @@ fn format_suit_glyph_all_suits() {
 fn format_foundations_row_empty_board() {
     let game = solitaire_core::game_state::GameState::new_with_mode(
         42,
-        solitaire_core::DrawStockConfig::DrawOne,
-        solitaire_core::game_state::GameMode::Classic,
+        DrawStockConfig::DrawOne,
+        GameMode::Classic,
     );
     assert_eq!(format_foundations_row(&game), "F: -- -- -- --");
 }
@@ -2324,8 +2324,8 @@ fn format_foundations_row_empty_board() {
 fn format_stock_waste_row_initial_state() {
     let game = solitaire_core::game_state::GameState::new_with_mode(
         42,
-        solitaire_core::DrawStockConfig::DrawOne,
-        solitaire_core::game_state::GameMode::Classic,
+        DrawStockConfig::DrawOne,
+        GameMode::Classic,
     );
     let text = format_stock_waste_row(&game);
     assert!(
diff --git a/solitaire_engine/src/safe_area.rs b/solitaire_engine/src/safe_area.rs
index b499bb3..9ee383d 100644
--- a/solitaire_engine/src/safe_area.rs
+++ b/solitaire_engine/src/safe_area.rs
@@ -1,5 +1,10 @@
 //! Safe-area insets.
 //!
+// JNI FFI (Android only) requires `unsafe` to reconstruct `JavaVM` /
+// `JObject` handles from raw pointers handed over by the runtime. Scoped to
+// this module so the rest of the workspace stays `deny(unsafe_code)`.
+#![allow(unsafe_code)]
+//!
 //! Reports the OS-reserved regions around the playable surface (status
 //! bar at the top, gesture / navigation bar at the bottom on Android,
 //! display cutouts, etc.) so UI anchored to a screen edge can avoid
diff --git a/solitaire_engine/src/selection_plugin.rs b/solitaire_engine/src/selection_plugin.rs
index c87fdfe..ee275ec 100644
--- a/solitaire_engine/src/selection_plugin.rs
+++ b/solitaire_engine/src/selection_plugin.rs
@@ -163,7 +163,7 @@ impl Plugin for SelectionPlugin {
                     update_selection_highlight.after(GameMutation).run_if(
                         resource_changed::<SelectionState>
                             .or(resource_changed::<KeyboardDragState>)
-                            .or(resource_changed::<crate::GameStateResource>),
+                            .or(resource_changed::<GameStateResource>),
                     ),
                 ),
             );
@@ -534,7 +534,7 @@ fn handle_selection_keys(
 /// destination after a lift. Players who want a different column simply
 /// press the right-arrow key once or twice.
 pub(crate) fn legal_destinations_for(
-    _bottom: &solitaire_core::Card,
+    _bottom: &Card,
     source: &KlondikePile,
     game: &GameState,
     stack_count: usize,
@@ -579,7 +579,7 @@ pub(crate) fn legal_destinations_for(
 /// Walks backwards from the last element and stops at the first face-down card
 /// (or when the slice is exhausted). Returns at least `1` when the top card is
 /// face-up; returns `0` for an empty slice or when the top card is face-down.
-fn face_up_run_len(cards: &[(solitaire_core::Card, bool)]) -> usize {
+fn face_up_run_len(cards: &[(Card, bool)]) -> usize {
     let mut count = 0;
     for (_, face_up) in cards.iter().rev() {
         if *face_up {
@@ -598,8 +598,8 @@ fn face_up_run_len(cards: &[(solitaire_core::Card, bool)]) -> usize {
 /// handler can attempt a foundation move first and fall through to a
 /// multi-card stack move rather than accepting a single-card tableau move.
 fn try_foundation_dest(
-    card: &solitaire_core::Card,
-    game: &solitaire_core::game_state::GameState,
+    card: &Card,
+    game: &GameState,
 ) -> Option<KlondikePile> {
     let source = game.pile_containing_card(card.clone())?;
     for foundation in [
diff --git a/solitaire_engine/src/settings_plugin.rs b/solitaire_engine/src/settings_plugin.rs
index 0688680..1a87e5d 100644
--- a/solitaire_engine/src/settings_plugin.rs
+++ b/solitaire_engine/src/settings_plugin.rs
@@ -379,8 +379,8 @@ impl Plugin for SettingsPlugin {
             .add_message::<DeleteAccountRequestEvent>()
             .add_message::<ToggleSettingsRequestEvent>()
             .add_message::<InfoToastEvent>()
-            .add_message::<bevy::input::mouse::MouseWheel>()
-            .add_message::<bevy::input::touch::TouchInput>()
+            .add_message::<MouseWheel>()
+            .add_message::<TouchInput>()
             // `WindowResized` / `WindowMoved` are real Bevy window events
             // and emitted by the windowing backend under `DefaultPlugins`,
             // but we register them explicitly here so the geometry watcher
@@ -2662,7 +2662,7 @@ fn handle_scan_themes(
 
         let themes_dir = user_theme_dir();
 
-        let zips: Vec<std::path::PathBuf> = match std::fs::read_dir(&themes_dir) {
+        let zips: Vec<PathBuf> = match std::fs::read_dir(&themes_dir) {
             Ok(entries) => entries
                 .flatten()
                 .map(|e| e.path())
@@ -3019,7 +3019,7 @@ mod tests {
             unit: MouseScrollUnit::Line,
             x: 0.0,
             y: -3.0,
-            window: bevy::ecs::entity::Entity::PLACEHOLDER,
+            window: Entity::PLACEHOLDER,
         });
         app.update();
         // ScrollPosition must remain at 0.0 — panel was closed.
@@ -3052,7 +3052,7 @@ mod tests {
             unit: MouseScrollUnit::Line,
             x: 0.0,
             y: -2.0,
-            window: bevy::ecs::entity::Entity::PLACEHOLDER,
+            window: Entity::PLACEHOLDER,
         });
         app.update();
         let offset = app
@@ -3364,7 +3364,7 @@ mod tests {
 
     fn fire_resize(app: &mut App, width: f32, height: f32) {
         app.world_mut().write_message(WindowResized {
-            window: bevy::ecs::entity::Entity::PLACEHOLDER,
+            window: Entity::PLACEHOLDER,
             width,
             height,
         });
@@ -3372,7 +3372,7 @@ mod tests {
 
     fn fire_move(app: &mut App, x: i32, y: i32) {
         app.world_mut().write_message(WindowMoved {
-            window: bevy::ecs::entity::Entity::PLACEHOLDER,
+            window: Entity::PLACEHOLDER,
             position: IVec2::new(x, y),
         });
     }
@@ -3494,7 +3494,7 @@ mod tests {
             unit: MouseScrollUnit::Line,
             x: 0.0,
             y: 5.0,
-            window: bevy::ecs::entity::Entity::PLACEHOLDER,
+            window: Entity::PLACEHOLDER,
         });
         app.update();
         let offset = app
diff --git a/solitaire_engine/src/splash_plugin.rs b/solitaire_engine/src/splash_plugin.rs
index ccc1b08..d290102 100644
--- a/solitaire_engine/src/splash_plugin.rs
+++ b/solitaire_engine/src/splash_plugin.rs
@@ -1010,8 +1010,8 @@ mod tests {
         use solitaire_data::Settings;
         let mut app = App::new();
         app.add_plugins(MinimalPlugins)
-            .add_plugins(bevy::asset::AssetPlugin::default())
-            .init_asset::<bevy::image::Image>()
+            .add_plugins(AssetPlugin::default())
+            .init_asset::<Image>()
             .add_plugins(SplashPlugin);
         app.init_resource::<ButtonInput<KeyCode>>();
         app.init_resource::<ButtonInput<MouseButton>>();
diff --git a/solitaire_engine/src/stats_plugin.rs b/solitaire_engine/src/stats_plugin.rs
index edbc3c9..4920c96 100644
--- a/solitaire_engine/src/stats_plugin.rs
+++ b/solitaire_engine/src/stats_plugin.rs
@@ -203,7 +203,7 @@ impl Plugin for StatsPlugin {
             // `DefaultPlugins`; register it explicitly so the stats-scroll
             // system also runs cleanly under `MinimalPlugins` in tests.
             .add_message::<MouseWheel>()
-            .add_message::<bevy::input::touch::TouchInput>()
+            .add_message::<TouchInput>()
             // record_abandoned must read `move_count` BEFORE handle_new_game
             // clobbers it with a fresh game. These are NOT in StatsUpdate because
             // StatsUpdate (as a set) is ordered after GameMutation by external
@@ -464,7 +464,7 @@ fn repaint_replay_selector_detail(
 /// Pure helper: render the detail line for the selected replay. Returns
 /// `"{duration} win on {date}"` plus a `" \u{2022} Shareable"` badge
 /// when a share URL is present. Empty when the history slice is empty.
-pub fn replay_selector_detail(replays: &[solitaire_data::Replay], index: usize) -> String {
+pub fn replay_selector_detail(replays: &[Replay], index: usize) -> String {
     let Some(r) = replays.get(index.min(replays.len().saturating_sub(1))) else {
         return String::new();
     };
@@ -1325,7 +1325,7 @@ mod tests {
     fn draw_three_win_increments_draw_three_wins_only() {
         let mut app = headless_app();
         app.world_mut()
-            .resource_mut::<crate::resources::GameStateResource>()
+            .resource_mut::<GameStateResource>()
             .0
             .set_test_draw_mode(solitaire_core::DrawStockConfig::DrawThree);
 
@@ -1371,7 +1371,7 @@ mod tests {
         let mut app = headless_app();
 
         app.world_mut()
-            .resource_mut::<crate::resources::GameStateResource>()
+            .resource_mut::<GameStateResource>()
             .0
             .set_test_move_count(3);
 
@@ -1501,7 +1501,7 @@ mod tests {
     fn zen_win_event_updates_zen_best_score_only() {
         let mut app = headless_app();
         app.world_mut()
-            .resource_mut::<crate::resources::GameStateResource>()
+            .resource_mut::<GameStateResource>()
             .0
             .mode = solitaire_core::game_state::GameMode::Zen;
 
@@ -1697,7 +1697,7 @@ mod tests {
             stats.0.win_streak_current = 3;
         }
         app.world_mut()
-            .resource_mut::<crate::resources::GameStateResource>()
+            .resource_mut::<GameStateResource>()
             .0
             .set_test_move_count(1);
 
@@ -1723,7 +1723,7 @@ mod tests {
             stats.0.win_streak_current = 1;
         }
         app.world_mut()
-            .resource_mut::<crate::resources::GameStateResource>()
+            .resource_mut::<GameStateResource>()
             .0
             .set_test_move_count(1);
 
@@ -1948,9 +1948,9 @@ mod tests {
     ///
     /// Uses a fixed seed, DrawOne mode, Classic game, 2026-05-08 date.
     /// `time_seconds` and `share_url` are the only varying fields across tests.
-    fn make_test_replay(time_seconds: u64, share_url: Option<String>) -> solitaire_data::Replay {
+    fn make_test_replay(time_seconds: u64, share_url: Option<String>) -> Replay {
         let date = chrono::NaiveDate::from_ymd_opt(2026, 5, 8).expect("valid date");
-        let mut r = solitaire_data::Replay::new(
+        let mut r = Replay::new(
             1,
             solitaire_core::DrawStockConfig::DrawOne,
             solitaire_core::game_state::GameMode::Classic,
diff --git a/solitaire_engine/src/sync_plugin.rs b/solitaire_engine/src/sync_plugin.rs
index 68a31b9..271a3d7 100644
--- a/solitaire_engine/src/sync_plugin.rs
+++ b/solitaire_engine/src/sync_plugin.rs
@@ -496,7 +496,7 @@ mod tests {
             .add_plugins(crate::achievement_plugin::AchievementPlugin::headless())
             .add_plugins(SyncPlugin::new(provider));
         // MinimalPlugins does not register keyboard input.
-        app.init_resource::<bevy::input::ButtonInput<KeyCode>>();
+        app.init_resource::<ButtonInput<KeyCode>>();
         app.update();
         app
     }
@@ -629,8 +629,8 @@ mod tests {
             replays: vec![initial],
         };
         save_replay_history_to(&path, &history).expect("seed history on disk");
-        app.insert_resource(crate::stats_plugin::ReplayHistoryResource(history));
-        app.insert_resource(crate::stats_plugin::LatestReplayPath(Some(path.clone())));
+        app.insert_resource(ReplayHistoryResource(history));
+        app.insert_resource(LatestReplayPath(Some(path.clone())));
 
         // Pre-resolved task carrying the URL the production path would
         // get back from the server.
@@ -659,7 +659,7 @@ mod tests {
         // In-memory contract: replays[0].share_url is now Some(url).
         let live = app
             .world()
-            .resource::<crate::stats_plugin::ReplayHistoryResource>();
+            .resource::<ReplayHistoryResource>();
         assert_eq!(
             live.0.replays.first().and_then(|r| r.share_url.clone()),
             Some(url.clone()),
diff --git a/solitaire_engine/src/table_plugin.rs b/solitaire_engine/src/table_plugin.rs
index 8aa375b..854f4d3 100644
--- a/solitaire_engine/src/table_plugin.rs
+++ b/solitaire_engine/src/table_plugin.rs
@@ -11,9 +11,7 @@ use solitaire_core::Suit;
 
 use crate::events::{HintVisualEvent, StateChangedEvent};
 use crate::hud_plugin::HudVisibility;
-#[cfg(test)]
-use crate::layout::TABLE_COLOUR;
-use crate::layout::{Layout, LayoutResource, LayoutSystem, compute_layout};
+use crate::layout::{Layout, LayoutResource, LayoutSystem, TABLE_COLOUR, compute_layout};
 use crate::resources::GameStateResource;
 use crate::safe_area::SafeAreaInsets;
 use crate::settings_plugin::{SettingsChangedEvent, SettingsResource};
@@ -177,9 +175,9 @@ fn setup_table(
             Camera2d,
             Camera {
                 clear_color: ClearColorConfig::Custom(Color::srgb(
-                    crate::layout::TABLE_COLOUR[0],
-                    crate::layout::TABLE_COLOUR[1],
-                    crate::layout::TABLE_COLOUR[2],
+                    TABLE_COLOUR[0],
+                    TABLE_COLOUR[1],
+                    TABLE_COLOUR[2],
                 )),
                 ..default()
             },
diff --git a/solitaire_engine/src/theme/importer.rs b/solitaire_engine/src/theme/importer.rs
index 3a25bb2..b2c4de9 100644
--- a/solitaire_engine/src/theme/importer.rs
+++ b/solitaire_engine/src/theme/importer.rs
@@ -236,7 +236,7 @@ pub fn import_theme_into(zip_path: &Path, target_root: &Path) -> Result<ThemeId,
 /// Sums every entry's declared uncompressed size and rejects archives
 /// that overflow [`MAX_ARCHIVE_BYTES`]. Iterates the central
 /// directory only — does not actually decompress anything.
-fn enforce_archive_size_limit<R: io::Read + io::Seek>(
+fn enforce_archive_size_limit<R: Read + io::Seek>(
     archive: &mut zip::ZipArchive<R>,
 ) -> Result<(), ImportError> {
     let mut total: u64 = 0;
@@ -257,7 +257,7 @@ fn enforce_archive_size_limit<R: io::Read + io::Seek>(
 /// (after normalisation) escapes its root. Catches `..`, absolute
 /// paths, drive prefixes on Windows, and the awkward case where
 /// `enclosed_name` returns `None` because the entry is suspicious.
-fn enforce_zip_slip_safe<R: io::Read + io::Seek>(
+fn enforce_zip_slip_safe<R: Read + io::Seek>(
     archive: &mut zip::ZipArchive<R>,
 ) -> Result<(), ImportError> {
     for i in 0..archive.len() {
@@ -291,7 +291,7 @@ fn is_safe_relative_path(p: &Path) -> bool {
 ///   `theme.ron` entry at its root.
 /// - [`ImportError::ManifestParse`] when the bytes don't form valid
 ///   RON for `ThemeManifest`.
-fn read_manifest<R: io::Read + io::Seek>(
+fn read_manifest<R: Read + io::Seek>(
     archive: &mut zip::ZipArchive<R>,
 ) -> Result<ThemeManifest, ImportError> {
     // We can't use `?` directly across `by_name` because a missing
@@ -318,7 +318,7 @@ fn read_manifest<R: io::Read + io::Seek>(
 ///
 /// Returns [`ImportError::MissingFile`] when the archive has no entry
 /// matching the path.
-fn read_archive_entry<R: io::Read + io::Seek>(
+fn read_archive_entry<R: Read + io::Seek>(
     archive: &mut zip::ZipArchive<R>,
     path: &Path,
 ) -> Result<Vec<u8>, ImportError> {
@@ -351,7 +351,7 @@ fn archive_key(path: &Path) -> String {
 /// parent directories as needed. The destination path is rebuilt from
 /// the safe components we already vetted in
 /// [`enforce_zip_slip_safe`], not from the raw entry name.
-fn write_archive_entry<R: io::Read + io::Seek>(
+fn write_archive_entry<R: Read + io::Seek>(
     archive: &mut zip::ZipArchive<R>,
     name: &str,
     staging: &Path,
@@ -384,7 +384,7 @@ fn write_archive_entry<R: io::Read + io::Seek>(
 
 /// Variant of [`write_archive_entry`] keyed by `Path` for the
 /// manifest-declared face/back paths.
-fn write_archive_entry_pathbuf<R: io::Read + io::Seek>(
+fn write_archive_entry_pathbuf<R: Read + io::Seek>(
     archive: &mut zip::ZipArchive<R>,
     path: &Path,
     staging: &Path,
diff --git a/solitaire_engine/src/theme/plugin.rs b/solitaire_engine/src/theme/plugin.rs
index f72e015..a8b5b37 100644
--- a/solitaire_engine/src/theme/plugin.rs
+++ b/solitaire_engine/src/theme/plugin.rs
@@ -484,7 +484,7 @@ mod tests {
         let mut image_set = empty_card_image_set();
         // Snapshot the legacy back ids so we can prove they don't
         // change when a theme is applied.
-        let legacy_ids_before: [bevy::asset::AssetId<bevy::image::Image>; 5] =
+        let legacy_ids_before: [AssetId<Image>; 5] =
             std::array::from_fn(|i| image_set.backs[i].id());
         let theme = empty_theme();
         assert!(image_set.theme_back.is_none(), "theme_back starts empty");
diff --git a/solitaire_engine/src/time_attack_plugin.rs b/solitaire_engine/src/time_attack_plugin.rs
index 4c3c0cf..3738374 100644
--- a/solitaire_engine/src/time_attack_plugin.rs
+++ b/solitaire_engine/src/time_attack_plugin.rs
@@ -521,7 +521,7 @@ mod tests {
     // the session timer or the running win count.
     // -----------------------------------------------------------------------
 
-    fn tmp_ta_path(name: &str) -> std::path::PathBuf {
+    fn tmp_ta_path(name: &str) -> PathBuf {
         std::env::temp_dir().join(format!("engine_test_ta_{name}.json"))
     }
 
diff --git a/solitaire_engine/src/ui_focus.rs b/solitaire_engine/src/ui_focus.rs
index 3efb74f..d78e67a 100644
--- a/solitaire_engine/src/ui_focus.rs
+++ b/solitaire_engine/src/ui_focus.rs
@@ -1324,7 +1324,7 @@ mod tests {
         let row = world.spawn((FocusRow, Node::default())).id();
         world.entity_mut(scrim).add_child(row);
 
-        let make_swatch = |w: &mut World, marker: fn(&mut bevy::ecs::world::EntityWorldMut)| {
+        let make_swatch = |w: &mut World, marker: fn(&mut EntityWorldMut)| {
             let mut e = w.spawn((
                 Button,
                 Node::default(),
diff --git a/solitaire_engine/src/ui_modal.rs b/solitaire_engine/src/ui_modal.rs
index 4bfde69..f268f6a 100644
--- a/solitaire_engine/src/ui_modal.rs
+++ b/solitaire_engine/src/ui_modal.rs
@@ -982,9 +982,9 @@ mod tests {
                         outline_width: 0.0,
                         outline_offset: 0.0,
                         unrounded_size: card_size,
-                        border: bevy::sprite::BorderRect::default(),
-                        border_radius: bevy::ui::ResolvedBorderRadius::default(),
-                        padding: bevy::sprite::BorderRect::default(),
+                        border: BorderRect::default(),
+                        border_radius: ResolvedBorderRadius::default(),
+                        padding: BorderRect::default(),
                         inverse_scale_factor: 1.0,
                     };
                     // `is_empty` guard inside Bevy treats zero-size
diff --git a/solitaire_engine/src/ui_theme.rs b/solitaire_engine/src/ui_theme.rs
index ce0f56e..9f57784 100644
--- a/solitaire_engine/src/ui_theme.rs
+++ b/solitaire_engine/src/ui_theme.rs
@@ -249,12 +249,12 @@ pub const BORDER_SUBTLE_HC: Color = Color::srgba(0.627, 0.627, 0.627, 1.0);
 pub struct HighContrastBorder {
     /// Border colour to use when high-contrast mode is *off* — the
     /// site's normal idle / active-state colour.
-    pub default_color: bevy::prelude::Color,
+    pub default_color: Color,
 }
 
 impl HighContrastBorder {
     /// Convenience constructor — `HighContrastBorder::with_default(BORDER_SUBTLE)`.
-    pub const fn with_default(default_color: bevy::prelude::Color) -> Self {
+    pub const fn with_default(default_color: Color) -> Self {
         Self { default_color }
     }
 }
@@ -282,18 +282,18 @@ impl HighContrastBorder {
 pub struct HighContrastBackground {
     /// Background colour to use when high-contrast mode is *off* —
     /// the site's normal idle / active-state colour.
-    pub default_color: bevy::prelude::Color,
+    pub default_color: Color,
     /// Background colour to use when high-contrast mode is *on*.
     /// Defaults to [`BORDER_SUBTLE_HC`] via [`with_default`].
     ///
     /// [`with_default`]: HighContrastBackground::with_default
-    pub hc_color: bevy::prelude::Color,
+    pub hc_color: Color,
 }
 
 impl HighContrastBackground {
     /// Convenience constructor — HC colour defaults to
     /// [`BORDER_SUBTLE_HC`].
-    pub const fn with_default(default_color: bevy::prelude::Color) -> Self {
+    pub const fn with_default(default_color: Color) -> Self {
         Self {
             default_color,
             hc_color: BORDER_SUBTLE_HC,
@@ -305,8 +305,8 @@ impl HighContrastBackground {
     /// marker which bumps `STATE_SUCCESS` → `STATE_SUCCESS_HC` rather
     /// than to a neutral gray.
     pub const fn with_hc(
-        default_color: bevy::prelude::Color,
-        hc_color: bevy::prelude::Color,
+        default_color: Color,
+        hc_color: Color,
     ) -> Self {
         Self {
             default_color,
diff --git a/solitaire_engine/src/win_summary_plugin.rs b/solitaire_engine/src/win_summary_plugin.rs
index 13fe48a..25fe070 100644
--- a/solitaire_engine/src/win_summary_plugin.rs
+++ b/solitaire_engine/src/win_summary_plugin.rs
@@ -551,7 +551,7 @@ fn spawn_win_summary_after_delay(
         // speed the duration is zero anyway, suppressing the shake.
         let speed = settings
             .as_ref()
-            .map_or(solitaire_data::AnimSpeed::Normal, |s| s.0.animation_speed);
+            .map_or(AnimSpeed::Normal, |s| s.0.animation_speed);
         let scaled = scaled_duration(SHAKE_DURATION_SECS, speed);
         shake.remaining = scaled;
         shake.total = scaled;
diff --git a/solitaire_server/Cargo.toml b/solitaire_server/Cargo.toml
index a39908a..1b67601 100644
--- a/solitaire_server/Cargo.toml
+++ b/solitaire_server/Cargo.toml
@@ -32,3 +32,6 @@ dotenvy            = { workspace = true }
 
 [dev-dependencies]
 tower = { version = "0.5", features = ["util"] }
+
+[lints]
+workspace = true
diff --git a/solitaire_server/src/lib.rs b/solitaire_server/src/lib.rs
index e52d87f..4120aae 100644
--- a/solitaire_server/src/lib.rs
+++ b/solitaire_server/src/lib.rs
@@ -54,7 +54,7 @@ struct UserIdKeyExtractor {
 impl KeyExtractor for UserIdKeyExtractor {
     type Key = String;
 
-    fn extract<T>(&self, req: &axum::http::Request<T>) -> Result<Self::Key, GovernorError> {
+    fn extract<T>(&self, req: &Request<T>) -> Result<Self::Key, GovernorError> {
         if let Some(user_id) = self.try_extract_user_id(req.headers()) {
             return Ok(user_id);
         }
diff --git a/solitaire_server/tests/server_tests.rs b/solitaire_server/tests/server_tests.rs
index d3c04c9..270baed 100644
--- a/solitaire_server/tests/server_tests.rs
+++ b/solitaire_server/tests/server_tests.rs
@@ -565,7 +565,7 @@ async fn register_login_push_pull_full_roundtrip() {
         },
         achievements: vec![],
         progress: PlayerProgress::default(),
-        last_modified: chrono::Utc::now(),
+        last_modified: Utc::now(),
     };
 
     let push_resp = post_authed(
@@ -1299,7 +1299,7 @@ async fn expired_access_token_returns_401() {
         exp: usize,
         kind: String,
     }
-    let exp = (chrono::Utc::now() - chrono::Duration::hours(2)).timestamp() as usize;
+    let exp = (Utc::now() - chrono::Duration::hours(2)).timestamp() as usize;
     let expired_token = encode(
         &Header::default(),
         &ExpiredClaims {
@@ -1375,7 +1375,7 @@ async fn refresh_with_expired_refresh_token_returns_401() {
         exp: usize,
         kind: String,
     }
-    let exp = (chrono::Utc::now() - chrono::Duration::hours(2)).timestamp() as usize;
+    let exp = (Utc::now() - chrono::Duration::hours(2)).timestamp() as usize;
     let expired_token = encode(
         &Header::default(),
         &ExpiredRefreshClaims {
diff --git a/solitaire_sync/Cargo.toml b/solitaire_sync/Cargo.toml
index d647306..7a499ab 100644
--- a/solitaire_sync/Cargo.toml
+++ b/solitaire_sync/Cargo.toml
@@ -9,3 +9,6 @@ serde      = { workspace = true }
 uuid       = { workspace = true }
 chrono     = { workspace = true }
 thiserror  = { workspace = true }
+
+[lints]
+workspace = true
diff --git a/solitaire_sync/src/merge.rs b/solitaire_sync/src/merge.rs
index b17b562..9d03386 100644
--- a/solitaire_sync/src/merge.rs
+++ b/solitaire_sync/src/merge.rs
@@ -755,14 +755,14 @@ mod tests {
     fn progress_total_xp_takes_max() {
         let mut local = default_payload();
         local.progress.total_xp = 1500;
-        local.progress.level = crate::progress::level_for_xp(1500);
+        local.progress.level = level_for_xp(1500);
         let mut remote = default_payload();
         remote.progress.total_xp = 2500;
-        remote.progress.level = crate::progress::level_for_xp(2500);
+        remote.progress.level = level_for_xp(2500);
 
         let (merged, _) = merge(&local, &remote);
         assert_eq!(merged.progress.total_xp, 2500);
-        assert_eq!(merged.progress.level, crate::progress::level_for_xp(2500));
+        assert_eq!(merged.progress.level, level_for_xp(2500));
     }
 
     #[test]
@@ -815,7 +815,7 @@ mod tests {
 
         let (merged, _) = merge(&local, &remote);
         assert_eq!(merged.progress.total_xp, 5500);
-        assert_eq!(merged.progress.level, crate::progress::level_for_xp(5500));
+        assert_eq!(merged.progress.level, level_for_xp(5500));
     }
 
     // -----------------------------------------------------------------------
@@ -1051,11 +1051,11 @@ mod tests {
         // drop the oldest 50 so the cap is preserved.
         let start = nd(2024, 1, 1);
         let local_dates: Vec<NaiveDate> = (0..DAILY_CHALLENGE_HISTORY_CAP as i64)
-            .map(|i| start + chrono::Duration::days(i))
+            .map(|i| start + Duration::days(i))
             .collect();
         let remote_dates: Vec<NaiveDate> = (DAILY_CHALLENGE_HISTORY_CAP as i64
             ..DAILY_CHALLENGE_HISTORY_CAP as i64 + 50)
-            .map(|i| start + chrono::Duration::days(i))
+            .map(|i| start + Duration::days(i))
             .collect();
 
         let mut local = default_payload();
@@ -1073,7 +1073,7 @@ mod tests {
         // is therefore start + 50 days.
         assert_eq!(
             merged.progress.daily_challenge_history.first().copied(),
-            Some(start + chrono::Duration::days(50))
+            Some(start + Duration::days(50))
         );
         // Most recent retained is the last remote date.
         assert_eq!(
diff --git a/solitaire_wasm/Cargo.toml b/solitaire_wasm/Cargo.toml
index a62916a..b7ae860 100644
--- a/solitaire_wasm/Cargo.toml
+++ b/solitaire_wasm/Cargo.toml
@@ -28,3 +28,6 @@ web-sys = { version = "0.3", features = ["console"] }
 
 [features]
 default = ["console_error_panic_hook"]
+
+[lints]
+workspace = true
diff --git a/solitaire_web/Cargo.toml b/solitaire_web/Cargo.toml
index 0e36702..d4441f8 100644
--- a/solitaire_web/Cargo.toml
+++ b/solitaire_web/Cargo.toml
@@ -21,3 +21,6 @@ console_error_panic_hook = "0.1"
 # renderer to WebGL2 compatibility limits, which is wrong for native builds.
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 bevy = { workspace = true, features = ["webgl2"] }
+
+[lints]
+workspace = true