tab once selects builder, tab twice focuses builder

Assets/_Project/Scenes/Levels/9Player.unity

@@ -2253,7 +2253,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: Assembly-CSharp::TD.Audio.AudioManager
   categories:
   - category: 0
-    maxVoices: 4
+    maxVoices: 6
     volume: 0.5
   - category: 1
     maxVoices: 4

Assets/_Project/Scripts/Audio/AudioCategory.cs

@@ -1,5 +1,5 @@
 // Assets/_Project/Scripts/Audio/AudioCategory.cs
 namespace TD.Audio
 {
-    public enum AudioCategory { TowerFire, EnemyHitDeath, UI }
+    public enum AudioCategory { Combat, EnemyHitDeath, UI }
 }

Assets/_Project/Scripts/Combat/TeslaTowerFireSound.cs

@@ -38,7 +38,7 @@ namespace TD.Combat
 
         private void HandleAreaFired(Vector3[] positions)
         {
-            AudioManager.Instance?.Play(fireSound.clip, AudioCategory.TowerFire, fireSound.RandomPitch(), fireSound.volume);
+            AudioManager.Instance?.Play(fireSound.clip, AudioCategory.Combat, fireSound.RandomPitch(), fireSound.volume);
         }
     }
 }

Assets/_Project/Scripts/Gameplay/BuilderInputController.cs

@@ -157,6 +157,21 @@ namespace TD.Gameplay
                 HUDController.Instance?.ToggleBuffMenu();
             }
 
+            // Tab: select the builder, or (if already selected) recenter the camera on it.
+            if (keyboard != null && keyboard.tabKey.wasPressedThisFrame
+                && !HUDController.IsTextInputActive)
+            {
+                var selection = SelectionState.Instance;
+                if (selection != null && selection.IsSelected(builder))
+                {
+                    HUDController.Instance?.CenterCameraOnSelection();
+                }
+                else
+                {
+                    selection?.Select(builder);
+                }
+            }
+
             if (pointerOverHud) return;
             if (!mouse.rightButton.wasPressedThisFrame) return;
 

Assets/_Project/Scripts/Gameplay/BuilderSpells/FireballSpellDefinition.cs

@@ -65,7 +65,7 @@ namespace TD.Gameplay.BuilderSpells
                 Destroy(Instantiate(impactVfxPrefab, targetPoint, Quaternion.identity), impactVfxLifetime);
 
             if (impactSound.clip != null)
-                AudioManager.Instance?.Play(impactSound.clip, AudioCategory.TowerFire,
+                AudioManager.Instance?.Play(impactSound.clip, AudioCategory.Combat,
                                              impactSound.RandomPitch(), impactSound.volume);
         }
     }

Assets/_Project/Scripts/UI/HUDController.cs

@@ -1642,7 +1642,14 @@ namespace TD.UI
         // WC3 / SC2 convention: clicking the portrait recenters the camera on
         // whoever is selected. Zoom is preserved (CameraController.JumpTo only
         // moves the pivot). No-op when nothing is selected or the camera isn't wired.
-        private void OnPortraitClicked(ClickEvent evt)
+        private void OnPortraitClicked(ClickEvent evt) => CenterCameraOnSelection();
+
+        /// <summary>
+        /// Recenters the camera on the current selection (same behavior as clicking the
+        /// portrait). No-op when nothing is selected or the camera isn't wired. Also used
+        /// by the Tab hotkey (select-builder-then-focus) in BuilderInputController.
+        /// </summary>
+        public void CenterCameraOnSelection()
         {
             var sel = SelectionState.Instance?.SelectedObject;
             if (sel == null) return;