Audio: radar taunt at head height + Steam Audio source tuning

- MatchManager: taunt positions resolve the FirstPersonTarget child instead of the player root (shared TauntPosition helper, root fallback)
- SoundEffectInstance: physics-based distance attenuation + raycast occlusion on runtime SteamAudioSource

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

Assets/Scripts/Audio/SoundEffectInstance.cs

@@ -31,7 +31,10 @@ namespace Prototype
             if (audioSource.spatialize && options.GetOcclusion())
             {
                 var steamAudioSource = gameObject.AddComponent<SteamAudio.SteamAudioSource>();
+                steamAudioSource.distanceAttenuation = true;
+                steamAudioSource.distanceAttenuationInput = SteamAudio.DistanceAttenuationInput.PhysicsBased;
                 steamAudioSource.occlusion = true;
+                steamAudioSource.occlusionType = SteamAudio.OcclusionType.Raycast;
                 steamAudioSource.transmission = true;
                 steamAudioSource.transmissionType = SteamAudio.TransmissionType.FrequencyDependent;
             }

Assets/Scripts/Network/MatchManager.cs

@@ -1241,7 +1241,7 @@ public class MatchManager : MonoBehaviour
             reader.ReadValueSafe(out ulong netObjId);
             if (spawnMgr == null || !spawnMgr.SpawnedObjects.TryGetValue(netObjId, out var no) || !no) continue;
             if (spawnBlips && radar) radar.Spawn(no.transform, lifetime);
-            _radarSoundPositions.Add(no.transform.position);
+            _radarSoundPositions.Add(TauntPosition(no.transform));
         }
         PlayStaggeredPingTaunts();
     }
@@ -1256,10 +1256,17 @@ public class MatchManager : MonoBehaviour
         _radarSoundPositions.Clear();
         for (int i = 0; i < _radarPingIds.Count; i++)
             if (spawnMgr.SpawnedObjects.TryGetValue(_radarPingIds[i], out var no) && no)
-                _radarSoundPositions.Add(no.transform.position);
+                _radarSoundPositions.Add(TauntPosition(no.transform));
         PlayStaggeredPingTaunts();
     }
 
+    // Taunts play at head height (the player's FirstPersonTarget child) rather than the root at the feet.
+    private static Vector3 TauntPosition(Transform player)
+    {
+        Transform t = player.Find("FirstPersonTarget");
+        return t ? t.position : player.position;
+    }
+
     // Plays the ping taunt at every staged position - staggered, never simultaneous. The same sample starting
     // at several world positions in the same audio frame phase-cancels, so each instance is delayed by its
     // distance to the local audio listener at the speed of sound (natural propagation: far players are heard