Radar ping taunt sound + per-SoundEffect spatialize opt-in

MatchManager: new Radar Ping Sound property; MsgRadarPing now goes to
all clients (spawnBlips flag keeps blips hunter-only), sound plays 3D
at each pinged hider. Distance-based stagger (speed of sound + 35 ms
min gap) prevents phase cancellation when multiple hiders ping.

SoundEffect: new spatialize toggle (per asset, applied only to 3D
instances -> Steam Audio HRTF); removed unused fade field.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/Scripts/Audio/SoundEffect.cs

@@ -15,8 +15,7 @@ namespace Prototype
         public AudioMixerGroup audioMixerGroup;
         public float volumeMultiplierFactor = 1;
         [SerializeField] bool loop;
-        [SerializeField] Vector2 fade = new();
-
+        [SerializeField] bool spatialize;
 
         [Header("Additional Settings")]
         [SerializeField, Range(0, 1)] float defaultVolume = .8f;
@@ -36,8 +35,8 @@ namespace Prototype
             volumeMultiplier = Random.Range(volumeMultiplier.x, volumeMultiplier.y) * volumeMultiplierFactor,
             pitch = Random.Range(pitch.x, pitch.y),
             loop = loop,
-            distanceRange = distanceRange ? distanceRange.range : null,
-            fade = fade
+            spatialize = spatialize,
+            distanceRange = distanceRange ? distanceRange.range : null
         };
 
 #if UNITY_EDITOR

Assets/Scripts/Audio/SoundEffectInstance.cs

@@ -26,6 +26,7 @@ namespace Prototype
                 var range = options.GetDistanceRange();
 
                 audioSource.spatialBlend = range.x == 0 && range.y == 0 ? 0 : 1;
+                audioSource.spatialize = options.GetSpatialize() && audioSource.spatialBlend > 0;
                 audioSource.rolloffMode = AudioRolloffMode.Linear;
                 audioSource.minDistance = range.x;
                 audioSource.maxDistance = range.y;

Assets/Scripts/Audio/SoundEffectOptions.cs

@@ -20,13 +20,13 @@ namespace Prototype
         public Vector2? distanceRange;
         public Vector2 GetDistanceRange() => distanceRange ?? new(30, 200);
 
-        public Vector2? fade;
-        public Vector2 GetFade() => fade ?? new();
-
         public bool? destroyOnLoad;
         public bool ShouldDestroyOnLoad() => destroyOnLoad ?? true;
 
         public float? delay;
         public float GetDelay() => delay ?? 0;
+
+        public bool? spatialize;
+        public bool GetSpatialize() => spatialize ?? false;
     }
 }