Initial commit: CunaFinanceBsc smart contract

- Add upgradeable smart contract with vesting and staking functionality
- Include comprehensive deployment script for proxy deployments and upgrades
- Configure Hardhat with BSC testnet and verification support
- Successfully deployed to BSC testnet at 0x12d705781764b7750d5622727EdA2392b512Ca3d

🤖 Generated with [Claude Code](https://claude.ai/code)

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

artifacts/@openzeppelin/contracts/interfaces/draft-IERC6093.sol/IERC721Errors.json

@@ -0,0 +1,114 @@
+{
+  "_format": "hh-sol-artifact-1",
+  "contractName": "IERC721Errors",
+  "sourceName": "@openzeppelin/contracts/interfaces/draft-IERC6093.sol",
+  "abi": [
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "sender",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        },
+        {
+          "internalType": "address",
+          "name": "owner",
+          "type": "address"
+        }
+      ],
+      "name": "ERC721IncorrectOwner",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "operator",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        }
+      ],
+      "name": "ERC721InsufficientApproval",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "approver",
+          "type": "address"
+        }
+      ],
+      "name": "ERC721InvalidApprover",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "operator",
+          "type": "address"
+        }
+      ],
+      "name": "ERC721InvalidOperator",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "owner",
+          "type": "address"
+        }
+      ],
+      "name": "ERC721InvalidOwner",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "receiver",
+          "type": "address"
+        }
+      ],
+      "name": "ERC721InvalidReceiver",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "sender",
+          "type": "address"
+        }
+      ],
+      "name": "ERC721InvalidSender",
+      "type": "error"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "tokenId",
+          "type": "uint256"
+        }
+      ],
+      "name": "ERC721NonexistentToken",
+      "type": "error"
+    }
+  ],
+  "bytecode": "0x",
+  "deployedBytecode": "0x",
+  "linkReferences": {},
+  "deployedLinkReferences": {}
+}