fix: deployment from private key in foundry

foundry.toml

@@ -82,30 +82,30 @@
   localhost = "http://localhost:8545"
 
   # ETHEREUM
-  goerli = "https://goerli.infura.io/v3/${API_KEY_INFURA}"
-  mainnet = "https://eth-mainnet.g.alchemy.com/v2/${API_KEY_ALCHEMY}"
-  sepolia = "https://sepolia.infura.io/v3/${API_KEY_INFURA}"
+  goerli = "https://goerli.infura.io/v3/${INFURA_API_KEY}"
+  mainnet = "https://eth-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+  sepolia = "https://sepolia.infura.io/v3/${INFURA_API_KEY}"
 
   # BINANCE SMART CHAIN
   bnb_smart_chain = "https://bsc-dataseed.binance.org"
   bnb_smart_chain_testnet = "https://rpc.ankr.com/bsc_testnet_chapel"
 
   # MATIC/POLYGON
-  polygon = "https://polygon-mainnet.infura.io/v3/${API_KEY_INFURA}"
+  polygon = "https://polygon-mainnet.infura.io/v3/${INFURA_API_KEY}"
   polygon_mumbai = "https://polygon-mumbai.infura.io/v3/${INFURA_API_KEY}"
 
   # OPTIMISM
-  optimism = "https://optimism-mainnet.infura.io/v3/${API_KEY_INFURA}"
+  optimism = "https://optimism-mainnet.infura.io/v3/${INFURA_API_KEY}"
   optimism_goerli = "https://optimism-goerli.infura.io/v3/${INFURA_API_KEY}"
 
   # ARBITRUM
   arbitrum_nova = ""
-  arbitrum_one = "https://arbitrum-mainnet.infura.io/v3/${API_KEY_INFURA}"
+  arbitrum_one = "https://arbitrum-mainnet.infura.io/v3/${INFURA_API_KEY}"
   arbitrum_one_goerli = "https://arbitrum-goerli.infura.io/v3/${INFURA_API_KEY}"
 
   # AVALANCHE
-  avalanche = "https://avalanche-mainnet.infura.io/v3/${API_KEY_INFURA}"
-  avalanche_fuji = "https://avalanche-fuji.infura.io/v3/${API_KEY_INFURA}"
+  avalanche = "https://avalanche-mainnet.infura.io/v3/${INFURA_API_KEY}"
+  avalanche_fuji = "https://avalanche-fuji.infura.io/v3/${INFURA_API_KEY}"
 
   # GNOSIS CHAIN
   gnosis_chain = "https://rpc.gnosischain.com"

scripts/foundry/Base.s.sol

@@ -17,26 +17,28 @@ abstract contract BaseScript is Script {
     /// @dev Used to derive the broadcaster's address if $PRIVATE_KEY is not defined.
     string internal mnemonic;
 
+    /// @dev The private key of the transaction broadcaster.
+    uint256 private broadcasterPK;
+
     /// @dev Initializes the transaction broadcaster like this:
     ///
     /// - If $PRIVATE_KEY is defined, use it.
     /// - Otherwise, derive the broadcaster address from $MNEMONIC.
     /// - If $MNEMONIC is not defined, default to a test mnemonic.
-    ///
-    /// The use case for $PRIVATE_KEY is to specify the broadcaster key and its address via the
-    /// command line.
     constructor() {
-        address from = vm.envOr({ name: "PRIVATE_KEY", defaultValue: address(0) });
-        if (from != address(0)) {
-            broadcaster = from;
+        uint256 privateKey = vm.envOr({ name: "PRIVATE_KEY", defaultValue: uint256(0) });
+
+        if (privateKey != 0) {
+            broadcaster = vm.addr(privateKey);
+            broadcasterPK = privateKey;
         } else {
             mnemonic = vm.envOr({ name: "MNEMONIC", defaultValue: TEST_MNEMONIC });
-            (broadcaster,) = deriveRememberKey({ mnemonic: mnemonic, index: 0 });
+            (broadcaster, broadcasterPK) = deriveRememberKey({ mnemonic: mnemonic, index: 0 });
         }
     }
 
     modifier broadcast() {
-        vm.startBroadcast(broadcaster);
+        vm.startBroadcast(broadcasterPK);
         _;
         vm.stopBroadcast();
     }