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/tests/icon_svg_pin.rs

@@ -15,7 +15,7 @@
 //! `card_face_svg_pin.rs`.
 
 use bevy::math::UVec2;
-use solitaire_engine::assets::icon_svg::{icon_svg, ICON_SIZES};
+use solitaire_engine::assets::icon_svg::{ICON_SIZES, icon_svg};
 use solitaire_engine::assets::rasterize_svg;
 
 const EXPECTED: &[(u32, u64)] = &[
@@ -50,10 +50,7 @@ fn rasterised_icon_bytes_match_pinned_hashes() {
     for ((actual_size, actual_hash), (expected_size, expected_hash)) in
         actual.iter().zip(EXPECTED.iter())
     {
-        assert_eq!(
-            actual_size, expected_size,
-            "icon-size order drifted",
-        );
+        assert_eq!(actual_size, expected_size, "icon-size order drifted",);
         if actual_hash != expected_hash {
             mismatches.push(format!(
                 "  icon_{actual_size}: actual 0x{actual_hash:016x}  expected 0x{expected_hash:016x}",
@@ -87,7 +84,9 @@ fn compute_actual_hashes() -> Vec<(u32, u64)> {
 fn hash_rasterised(svg: &str, size: u32) -> u64 {
     let target = UVec2::new(size, size);
     let image = rasterize_svg(svg.as_bytes(), target).expect("rasterise icon SVG");
-    let bytes = image.data.expect("rasterised image carries RGBA pixel data");
+    let bytes = image
+        .data
+        .expect("rasterised image carries RGBA pixel data");
     fnv1a(&bytes)
 }