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/auto_complete_plugin.rs

@@ -39,17 +39,16 @@ pub struct AutoCompletePlugin;
 
 impl Plugin for AutoCompletePlugin {
     fn build(&self, app: &mut App) {
-        app.init_resource::<AutoCompleteState>()
-            .add_systems(
-                Update,
-                (
-                    detect_auto_complete,
-                    on_auto_complete_start,
-                    drive_auto_complete,
-                )
-                    .chain()
-                    .after(GameMutation),
-            );
+        app.init_resource::<AutoCompleteState>().add_systems(
+            Update,
+            (
+                detect_auto_complete,
+                on_auto_complete_start,
+                drive_auto_complete,
+            )
+                .chain()
+                .after(GameMutation),
+        );
     }
 }
 
@@ -103,7 +102,9 @@ fn on_auto_complete_start(
         return;
     }
 
-    let (Some(audio), Some(lib)) = (audio.as_mut(), lib) else { return };
+    let (Some(audio), Some(lib)) = (audio.as_mut(), lib) else {
+        return;
+    };
     audio.play_sfx_at_volume(&lib.fanfare, AUTO_COMPLETE_CHIME_VOLUME);
 }
 
@@ -163,14 +164,22 @@ mod tests {
         g.piles.get_mut(&PileType::Stock).unwrap().cards.clear();
         g.piles.get_mut(&PileType::Waste).unwrap().cards.clear();
         for i in 0..7 {
-            g.piles.get_mut(&PileType::Tableau(i)).unwrap().cards.clear();
+            g.piles
+                .get_mut(&PileType::Tableau(i))
+                .unwrap()
+                .cards
+                .clear();
         }
-        g.piles.get_mut(&PileType::Tableau(0)).unwrap().cards.push(Card {
-            id: 99,
-            suit: Suit::Clubs,
-            rank: Rank::Ace,
-            face_up: true,
-        });
+        g.piles
+            .get_mut(&PileType::Tableau(0))
+            .unwrap()
+            .cards
+            .push(Card {
+                id: 99,
+                suit: Suit::Clubs,
+                rank: Rank::Ace,
+                face_up: true,
+            });
         g.is_auto_completable = true;
         g
     }