Adding tons of new functionality

Decals, ghost textures, placement functionality, builder stub ins, a new camera system,  and more.

Assets/_Project/Scripts/Gameplay/PlayerGoldManager.cs

@@ -143,6 +143,25 @@ namespace TD.Gameplay
             currentGold.Value += amount;
         }
 
+        /// <summary>
+        /// Server-side entry point for deducting gold (tower placement, other costs).
+        /// Direct call — not Rpc-wrapped — because deductions always originate from
+        /// server-authoritative validation (e.g., <c>TowerPlacementManager</c> after
+        /// all checks have passed). Clamps to zero; gold cannot go negative.
+        /// </summary>
+        public void DeductGold(int amount)
+        {
+            if (!IsServer)
+            {
+                Debug.LogError("[PlayerGoldManager] DeductGold called on a client. " +
+                               "Only server code should call this directly.");
+                return;
+            }
+
+            if (amount <= 0) return;
+            currentGold.Value = Mathf.Max(0, currentGold.Value - amount);
+        }
+
         // --- Server-side Rpc ---------------------------------------------
 
         // InvokePermission = Owner: only the client that owns this NetworkObject
@@ -175,4 +194,4 @@ namespace TD.Gameplay
             currentGold.Value -= amount;
         }
     }
-}
+}