added thesauros protocol information

Update index.js

Author: PillarDevelopment

projects/thesauros/index.js

@@ -0,0 +1,27 @@
+const config = {
+  arbitrum: [
+    '0x57C10bd3fdB2849384dDe954f63d37DfAD9d7d70', // tUSDC
+  ]
+};
+
+const abi = "function getDepositBalance(address user, address vault) view returns (uint256 balance)";
+
+module.exports = {
+  methodology: "TVL displays the total amount of assets stored in the Thesauros contracts.",
+  start: '2025-09-19',
+  hallmarks: [[1758283200, "Protocol launch"]],
+};
+
+Object.keys(config).forEach((chain) => {
+  module.exports[chain] = { tvl: (api) => tvl(api, config[chain]) };
+});
+
+const tvl = async (api, vaults) => {
+  const [providers, assets] = await Promise.all([
+    api.multiCall({ calls: vaults, abi: "address:activeProvider" }),
+    api.multiCall({ calls: vaults, abi: "address:asset" }),
+  ]);
+
+  const balances = await api.multiCall({ calls: vaults.map((vault, i) => ({ target: providers[i], params: [vault, vault] })), abi })
+  api.add(assets, balances)
+};