Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/config/metamask/DUAL_CHAIN_NETWORKS.json

@@ -0,0 +1,46 @@
+{
+  "name": "MetaMask Dual-Chain Networks (Chain 138 + Ethereum Mainnet)",
+  "version": { "major": 1, "minor": 0, "patch": 0 },
+  "chains": [
+    {
+      "chainId": "0x8a",
+      "chainIdDecimal": 138,
+      "chainName": "DeFi Oracle Meta Mainnet",
+      "rpcUrls": [
+        "https://rpc-http-pub.d-bis.org",
+        "https://rpc.d-bis.org",
+        "https://rpc2.d-bis.org",
+        "https://rpc.defi-oracle.io"
+      ],
+      "nativeCurrency": {
+        "name": "Ether",
+        "symbol": "ETH",
+        "decimals": 18
+      },
+      "blockExplorerUrls": ["https://explorer.d-bis.org"],
+      "iconUrls": [
+        "https://raw.githubusercontent.com/ethereum/ethereum.org/main/static/images/eth-diamond-black.png"
+      ]
+    },
+    {
+      "chainId": "0x1",
+      "chainIdDecimal": 1,
+      "chainName": "Ethereum Mainnet",
+      "rpcUrls": [
+        "https://eth.llamarpc.com",
+        "https://rpc.ankr.com/eth",
+        "https://ethereum.publicnode.com",
+        "https://1rpc.io/eth"
+      ],
+      "nativeCurrency": {
+        "name": "Ether",
+        "symbol": "ETH",
+        "decimals": 18
+      },
+      "blockExplorerUrls": ["https://etherscan.io"],
+      "iconUrls": [
+        "https://raw.githubusercontent.com/ethereum/ethereum.org/main/static/images/eth-diamond-black.png"
+      ]
+    }
+  ]
+}