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/audio_plugin.rs

@@ -22,8 +22,8 @@
 use std::io::Cursor;
 
 use bevy::prelude::*;
-use kira::sound::static_sound::{StaticSoundData, StaticSoundHandle};
 use kira::sound::Region;
+use kira::sound::static_sound::{StaticSoundData, StaticSoundHandle};
 use kira::track::{TrackBuilder, TrackHandle};
 use kira::{AudioManager, AudioManagerSettings, Decibels, DefaultBackend, Tween, Value};
 
@@ -178,8 +178,7 @@ fn build_library() -> Option<SoundLibrary> {
     let place = decode(include_bytes!("../../assets/audio/card_place.wav"))?;
     let invalid = decode(include_bytes!("../../assets/audio/card_invalid.wav"))?;
     let fanfare = decode(include_bytes!("../../assets/audio/win_fanfare.wav"))?;
-    let foundation_complete =
-        decode(include_bytes!("../../assets/audio/foundation_complete.wav"))?;
+    let foundation_complete = decode(include_bytes!("../../assets/audio/foundation_complete.wav"))?;
     Some(SoundLibrary {
         deal,
         flip,
@@ -212,8 +211,7 @@ fn start_ambient_loop(
 ) -> Option<StaticSoundHandle> {
     let manager = manager?;
 
-    let ambient_bytes: &'static [u8] =
-        include_bytes!("../../assets/audio/ambient_loop.wav");
+    let ambient_bytes: &'static [u8] = include_bytes!("../../assets/audio/ambient_loop.wav");
     let mut data = match StaticSoundData::from_cursor(Cursor::new(ambient_bytes.to_vec())) {
         Ok(d) => d,
         Err(e) => {
@@ -280,13 +278,19 @@ impl AudioState {
 
 fn set_sfx_volume(audio: &mut AudioState, volume: f32) {
     if let Some(track) = audio.sfx_track.as_mut() {
-        track.set_volume(amplitude_to_decibels(volume.clamp(0.0, 1.0)), Tween::default());
+        track.set_volume(
+            amplitude_to_decibels(volume.clamp(0.0, 1.0)),
+            Tween::default(),
+        );
     }
 }
 
 fn set_music_volume(audio: &mut AudioState, volume: f32) {
     if let Some(track) = audio.music_track.as_mut() {
-        track.set_volume(amplitude_to_decibels(volume.clamp(0.0, 1.0)), Tween::default());
+        track.set_volume(
+            amplitude_to_decibels(volume.clamp(0.0, 1.0)),
+            Tween::default(),
+        );
     }
 }
 
@@ -319,7 +323,10 @@ fn apply_volume_on_change(
         let sfx_muted = mute.as_ref().is_some_and(|m| m.sfx_muted);
         let music_muted = mute.as_ref().is_some_and(|m| m.music_muted);
         set_sfx_volume(&mut audio, if sfx_muted { 0.0 } else { ev.0.sfx_volume });
-        set_music_volume(&mut audio, if music_muted { 0.0 } else { ev.0.music_volume });
+        set_music_volume(
+            &mut audio,
+            if music_muted { 0.0 } else { ev.0.music_volume },
+        );
     }
 }
 
@@ -374,8 +381,7 @@ fn play_on_draw(
 
         if is_recycle(stock_len) {
             let mut data = lib.flip.clone();
-            data.settings.volume =
-                Value::Fixed(amplitude_to_decibels(RECYCLE_VOLUME as f32));
+            data.settings.volume = Value::Fixed(amplitude_to_decibels(RECYCLE_VOLUME as f32));
             let result = if let Some(track) = audio.sfx_track.as_mut() {
                 track.play(data)
             } else if let Some(manager) = audio.manager.as_mut() {
@@ -516,7 +522,10 @@ mod tests {
         toggle_all(&mut m);
         assert!(m.sfx_muted && m.music_muted, "M should mute both channels");
         toggle_all(&mut m);
-        assert!(!m.sfx_muted && !m.music_muted, "second M should unmute both channels");
+        assert!(
+            !m.sfx_muted && !m.music_muted,
+            "second M should unmute both channels"
+        );
     }
 
     #[test]
@@ -537,14 +546,23 @@ mod tests {
         assert!(m.music_muted && !m.sfx_muted);
         // M should mute sfx (not-all-muted → mute-all).
         toggle_all(&mut m);
-        assert!(m.sfx_muted && m.music_muted, "M unmutes neither — it mutes all when sfx was audible");
+        assert!(
+            m.sfx_muted && m.music_muted,
+            "M unmutes neither — it mutes all when sfx was audible"
+        );
     }
 
     #[test]
     fn mute_all_when_both_already_muted_unmutes_both() {
-        let mut m = MuteState { sfx_muted: true, music_muted: true };
+        let mut m = MuteState {
+            sfx_muted: true,
+            music_muted: true,
+        };
         toggle_all(&mut m);
-        assert!(!m.sfx_muted && !m.music_muted, "M should unmute both when all were muted");
+        assert!(
+            !m.sfx_muted && !m.music_muted,
+            "M should unmute both when all were muted"
+        );
     }
 
     // -----------------------------------------------------------------------