Create gas_profiles/CollectibleNFT_gas.json

gas_profiles/CollectibleNFT_gas.json

@@ -0,0 +1,13 @@
+{
+  "contract": "CollectibleNFT",
+  "deployment_gas": 1789234,
+  "functions": {
+    "mint(address)": 145670,
+    "transferFrom(address,address,uint256)": 67890,
+    "safeTransferFrom(address,address,uint256)": 68900,
+    "ownerOf(uint256)": 4500,
+    "balanceOf(address)": 3200
+  },
+  "average_execution_gas": 58000,
+  "notes": "ERC721 mint cost is high due to storage writes and URI logic."
+}