fix(engine,server): safe area clamp, analytics batch, achievement save order, daily rollover, replay validation, leaderboard opt-in (#56, #60, #61, #62, #66, #68)

- #66: Clamp safe-area insets to 25% of window height with warn!() on excess
- #68: Move fire_flush outside per-event loop in analytics (batch flush once)
- #56: Persist progress before marking reward_granted to prevent XP loss on crash
- #60: Add DateRolloverTimer + check_date_rollover system for midnight seed refresh
- #62: Add validate_header() in replay upload with mode/draw_mode allowlists
- #61: Restore two-query leaderboard opt-in check (SELECT then UPDATE); original
       queries already in .sqlx cache; EXISTS variant would require sqlx prepare

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

solitaire_engine/src/feedback_anim_plugin.rs

@@ -244,7 +244,9 @@ fn start_shake_anim(
         }
         let dest_pile = &ev.to;
         // Collect the card ids that belong to the destination pile.
-        let Some(pile) = game.0.piles.get(dest_pile) else { continue };
+        let Some(pile) = game.0.piles.get(dest_pile) else {
+            continue;
+        };
         let dest_card_ids: Vec<u32> = pile.cards.iter().map(|c| c.id).collect();
 
         if dest_card_ids.is_empty() {
@@ -395,7 +397,9 @@ fn start_deal_anim(
         return;
     }
     let Some(layout) = layout else { return };
-    let Some(&stock_pos) = layout.0.pile_positions.get(&PileType::Stock) else { return };
+    let Some(&stock_pos) = layout.0.pile_positions.get(&PileType::Stock) else {
+        return;
+    };
     let stock_start = Vec3::new(stock_pos.x, stock_pos.y, 0.0);
 
     let speed = settings.as_ref().map(|s| &s.0.animation_speed);
@@ -501,7 +505,12 @@ fn start_foundation_flourish(
     game: Res<GameStateResource>,
     settings: Option<Res<SettingsResource>>,
     card_entities: Query<(Entity, &CardEntity)>,
-    mut pile_markers: Query<(Entity, &PileMarker, &Sprite, Option<&FoundationMarkerFlourish>)>,
+    mut pile_markers: Query<(
+        Entity,
+        &PileMarker,
+        &Sprite,
+        Option<&FoundationMarkerFlourish>,
+    )>,
     mut commands: Commands,
 ) {
     let reduce_motion = settings.as_deref().is_some_and(|s| s.0.reduce_motion_mode);
@@ -767,7 +776,8 @@ mod tests {
             "flourish scale at t=0 must be 1.0"
         );
         assert!(
-            (foundation_flourish_scale(dur / 2.0, dur) - FOUNDATION_FLOURISH_PEAK_SCALE).abs() < 1e-5,
+            (foundation_flourish_scale(dur / 2.0, dur) - FOUNDATION_FLOURISH_PEAK_SCALE).abs()
+                < 1e-5,
             "flourish scale at midpoint must be FOUNDATION_FLOURISH_PEAK_SCALE"
         );
         assert!(
@@ -848,10 +858,8 @@ mod tests {
 
         // Spawn a minimal CardEntity matching that id so the system would
         // find it and insert ShakeAnim if the gate were absent.
-        app.world_mut().spawn((
-            CardEntity { card_id },
-            Transform::default(),
-        ));
+        app.world_mut()
+            .spawn((CardEntity { card_id }, Transform::default()));
 
         app.world_mut()
             .resource_mut::<Messages<MoveRejectedEvent>>()
@@ -867,7 +875,10 @@ mod tests {
             .query::<&ShakeAnim>()
             .iter(app.world())
             .count();
-        assert_eq!(shake_count, 0, "ShakeAnim must not be inserted under reduce-motion");
+        assert_eq!(
+            shake_count, 0,
+            "ShakeAnim must not be inserted under reduce-motion"
+        );
     }
 
     /// `start_foundation_flourish` must not insert `FoundationFlourish` when
@@ -901,6 +912,9 @@ mod tests {
             .query::<&FoundationFlourish>()
             .iter(app.world())
             .count();
-        assert_eq!(flourish_count, 0, "FoundationFlourish must not be inserted under reduce-motion");
+        assert_eq!(
+            flourish_count, 0,
+            "FoundationFlourish must not be inserted under reduce-motion"
+        );
     }
 }