fix: repair discarded-value bugs and harden client packet handling

- mono-server: turret recharge assigned its saturating_add result (was discarded) and clamped to capacity.
- bevy-client: projectile-move-end timer is now reassigned (was constructed then dropped); keyframe decode logs and skips malformed frames instead of panicking; F5 debug toggle uses just_pressed.

Author: CarsonBurke

packages/bevy-client/src/debug/plugin.rs

@@ -19,7 +19,8 @@ impl Plugin for DebugPlugin {
 }
 
 fn toggle_debug_ui(mut debug_ui: ResMut<DebugUI>, input: Res<ButtonInput<KeyCode>>) {
-    if input.pressed(KeyCode::F5) {
+    // `just_pressed` so one keypress toggles once instead of flipping every frame held.
+    if input.just_pressed(KeyCode::F5) {
         debug_ui.enabled = !debug_ui.enabled;
     }
 }

packages/bevy-client/src/engine/plugin.rs

@@ -53,8 +53,9 @@ impl Plugin for EnginePlugin {
 }
 
 fn reset_projectile_move_end_timer(mut projectile_timer: ResMut<ProjectileMoveEndTimer>, state: Res<State>) {
-    projectile_timer.0.reset();
-    Timer::from_seconds(
+    // Re-arm the timer against the most recent observed tick duration so projectile
+    // timing tracks the real server tick rate instead of the fixed startup value.
+    projectile_timer.0 = Timer::from_seconds(
         state.global.last_tick_duration.as_secs_f32() * PROJECTILE_MOVE_END_TICK_PORTION,
         TimerMode::Once,
     );

packages/bevy-client/src/networker.rs

@@ -178,8 +178,14 @@ pub fn handle_network_events(network_info: ResMut<NetworkInfo>, mut state: ResMu
             ewebsock::WsEvent::Message(ewebsock::WsMessage::Binary(data)) => {
                 println!("received binary message of len {:?}", data.len());
 
-                let keyframe: KeyFrame =
-                    postcard::from_bytes(&data).expect("failed to deserialize keyframe");
+                let keyframe: KeyFrame = match postcard::from_bytes(&data) {
+                    Ok(keyframe) => keyframe,
+                    Err(err) => {
+                        // A single malformed frame must not crash the client.
+                        error!("failed to deserialize keyframe: {err}");
+                        return;
+                    }
+                };
 
                 let Some(world) = deserialize_world_data(keyframe.world_data) else {
 

packages/mono-server/src/simulations/basic.rs

@@ -84,6 +84,6 @@ pub fn update(game_state: &mut GameState) {
     }
 
     for (entity, (turret, energy)) in &mut game_state.world.query::<(&Turret, &mut Energy)>() {
-        let _ = energy.current.saturating_add(1000);
+        energy.current = energy.current.saturating_add(1000).min(energy.capacity);
     }
 }