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/theme/mod.rs

@@ -28,15 +28,15 @@ use thiserror::Error;
 
 use solitaire_core::card::{Rank, Suit};
 
-pub use importer::{import_theme, import_theme_into, ImportError, ThemeId};
+pub use importer::{ImportError, ThemeId, import_theme, import_theme_into};
 pub use loader::{CardThemeLoader, CardThemeLoaderError};
 pub use manifest::ThemeManifest;
 pub use plugin::{
-    ensure_theme_thumbnails, set_theme, ActiveTheme, ThemePlugin, ThemeThumbnailCache,
-    ThemeThumbnailPair, THEME_THUMBNAIL_HEIGHT_PX, THEME_THUMBNAIL_WIDTH_PX,
+    ActiveTheme, THEME_THUMBNAIL_HEIGHT_PX, THEME_THUMBNAIL_WIDTH_PX, ThemePlugin,
+    ThemeThumbnailCache, ThemeThumbnailPair, ensure_theme_thumbnails, set_theme,
 };
 pub use registry::{
-    build_registry, refresh_registry, ThemeEntry, ThemeRegistry, ThemeRegistryPlugin,
+    ThemeEntry, ThemeRegistry, ThemeRegistryPlugin, build_registry, refresh_registry,
 };
 
 /// Hashable lookup key into [`CardTheme::faces`].
@@ -62,8 +62,18 @@ impl CardKey {
     pub fn all() -> impl Iterator<Item = CardKey> {
         const SUITS: [Suit; 4] = [Suit::Clubs, Suit::Diamonds, Suit::Hearts, Suit::Spades];
         const RANKS: [Rank; 13] = [
-            Rank::Ace, Rank::Two, Rank::Three, Rank::Four, Rank::Five, Rank::Six,
-            Rank::Seven, Rank::Eight, Rank::Nine, Rank::Ten, Rank::Jack, Rank::Queen,
+            Rank::Ace,
+            Rank::Two,
+            Rank::Three,
+            Rank::Four,
+            Rank::Five,
+            Rank::Six,
+            Rank::Seven,
+            Rank::Eight,
+            Rank::Nine,
+            Rank::Ten,
+            Rank::Jack,
+            Rank::Queen,
             Rank::King,
         ];
         SUITS