refactor: move brother_node development artifact to dev/test-nodes subdirectory

Development Artifact Cleanup:
✅ BROTHER_NODE REORGANIZATION: Moved development test node to appropriate location
- dev/test-nodes/brother_node/: Moved from root directory for better organization
- Contains development configuration, test logs, and test chain data
- No impact on production systems - purely development/testing artifact

✅ DEVELOPMENT ARTIFACTS IDENTIFIED:
- Chain ID: aitbc-brother-chain (test/development chain)
- Ports: 8010 (P2P) and 8011 (RPC) - different from production
- Environment: .env file with test configuration
- Logs: rpc.log and node.log from development testing session (March 15, 2026)

✅ ROOT DIRECTORY CLEANUP: Removed development clutter from production directory
- brother_node/ moved to dev/test-nodes/brother_node/
- Root directory now contains only production-ready components
- Development artifacts properly organized in dev/ subdirectory

DIRECTORY STRUCTURE IMPROVEMENT:
📁 dev/test-nodes/: Development and testing node configurations
🏗️ Root Directory: Clean production structure with only essential components
🧪 Development Isolation: Test environments separated from production

BENEFITS:
✅ Clean Production Directory: No development artifacts in root
✅ Better Organization: Development nodes grouped in dev/ subdirectory
✅ Clear Separation: Production vs development environments clearly distinguished
✅ Maintainability: Easier to identify and manage development components

RESULT: Successfully moved brother_node development artifact to dev/test-nodes/ subdirectory, cleaning up the root directory while preserving development testing environment for future use.

dev/env/node_modules/ethers/lib.commonjs/providers/provider-alchemy.js

@@ -0,0 +1,151 @@
+"use strict";
+/**
+ *  [[link-alchemy]] provides a third-party service for connecting to
+ *  various blockchains over JSON-RPC.
+ *
+ *  **Supported Networks**
+ *
+ *  - Ethereum Mainnet (``mainnet``)
+ *  - Goerli Testnet (``goerli``)
+ *  - Sepolia Testnet (``sepolia``)
+ *  - Arbitrum (``arbitrum``)
+ *  - Arbitrum Goerli Testnet (``arbitrum-goerli``)
+ *  - Arbitrum Sepolia Testnet (``arbitrum-sepolia``)
+ *  - Base (``base``)
+ *  - Base Goerlia Testnet (``base-goerli``)
+ *  - Base Sepolia Testnet (``base-sepolia``)
+ *  - Optimism (``optimism``)
+ *  - Optimism Goerli Testnet (``optimism-goerli``)
+ *  - Optimism Sepolia Testnet (``optimism-sepolia``)
+ *  - Polygon (``matic``)
+ *  - Polygon Amoy Testnet (``matic-amoy``)
+ *  - Polygon Mumbai Testnet (``matic-mumbai``)
+ *
+ *  @_subsection: api/providers/thirdparty:Alchemy  [providers-alchemy]
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AlchemyProvider = void 0;
+const index_js_1 = require("../utils/index.js");
+const community_js_1 = require("./community.js");
+const network_js_1 = require("./network.js");
+const provider_jsonrpc_js_1 = require("./provider-jsonrpc.js");
+const defaultApiKey = "_gg7wSSi0KMBsdKnGVfHDueq6xMB9EkC";
+function getHost(name) {
+    switch (name) {
+        case "mainnet":
+            return "eth-mainnet.g.alchemy.com";
+        case "goerli":
+            return "eth-goerli.g.alchemy.com";
+        case "sepolia":
+            return "eth-sepolia.g.alchemy.com";
+        case "arbitrum":
+            return "arb-mainnet.g.alchemy.com";
+        case "arbitrum-goerli":
+            return "arb-goerli.g.alchemy.com";
+        case "arbitrum-sepolia":
+            return "arb-sepolia.g.alchemy.com";
+        case "base":
+            return "base-mainnet.g.alchemy.com";
+        case "base-goerli":
+            return "base-goerli.g.alchemy.com";
+        case "base-sepolia":
+            return "base-sepolia.g.alchemy.com";
+        case "matic":
+            return "polygon-mainnet.g.alchemy.com";
+        case "matic-amoy":
+            return "polygon-amoy.g.alchemy.com";
+        case "matic-mumbai":
+            return "polygon-mumbai.g.alchemy.com";
+        case "optimism":
+            return "opt-mainnet.g.alchemy.com";
+        case "optimism-goerli":
+            return "opt-goerli.g.alchemy.com";
+        case "optimism-sepolia":
+            return "opt-sepolia.g.alchemy.com";
+    }
+    (0, index_js_1.assertArgument)(false, "unsupported network", "network", name);
+}
+/**
+ *  The **AlchemyProvider** connects to the [[link-alchemy]]
+ *  JSON-RPC end-points.
+ *
+ *  By default, a highly-throttled API key is used, which is
+ *  appropriate for quick prototypes and simple scripts. To
+ *  gain access to an increased rate-limit, it is highly
+ *  recommended to [sign up here](link-alchemy-signup).
+ *
+ *  @_docloc: api/providers/thirdparty
+ */
+class AlchemyProvider extends provider_jsonrpc_js_1.JsonRpcProvider {
+    apiKey;
+    constructor(_network, apiKey) {
+        if (_network == null) {
+            _network = "mainnet";
+        }
+        const network = network_js_1.Network.from(_network);
+        if (apiKey == null) {
+            apiKey = defaultApiKey;
+        }
+        const request = AlchemyProvider.getRequest(network, apiKey);
+        super(request, network, { staticNetwork: network });
+        (0, index_js_1.defineProperties)(this, { apiKey });
+    }
+    _getProvider(chainId) {
+        try {
+            return new AlchemyProvider(chainId, this.apiKey);
+        }
+        catch (error) { }
+        return super._getProvider(chainId);
+    }
+    async _perform(req) {
+        // https://docs.alchemy.com/reference/trace-transaction
+        if (req.method === "getTransactionResult") {
+            const { trace, tx } = await (0, index_js_1.resolveProperties)({
+                trace: this.send("trace_transaction", [req.hash]),
+                tx: this.getTransaction(req.hash)
+            });
+            if (trace == null || tx == null) {
+                return null;
+            }
+            let data;
+            let error = false;
+            try {
+                data = trace[0].result.output;
+                error = (trace[0].error === "Reverted");
+            }
+            catch (error) { }
+            if (data) {
+                (0, index_js_1.assert)(!error, "an error occurred during transaction executions", "CALL_EXCEPTION", {
+                    action: "getTransactionResult",
+                    data,
+                    reason: null,
+                    transaction: tx,
+                    invocation: null,
+                    revert: null // @TODO
+                });
+                return data;
+            }
+            (0, index_js_1.assert)(false, "could not parse trace result", "BAD_DATA", { value: trace });
+        }
+        return await super._perform(req);
+    }
+    isCommunityResource() {
+        return (this.apiKey === defaultApiKey);
+    }
+    static getRequest(network, apiKey) {
+        if (apiKey == null) {
+            apiKey = defaultApiKey;
+        }
+        const request = new index_js_1.FetchRequest(`https:/\/${getHost(network.name)}/v2/${apiKey}`);
+        request.allowGzip = true;
+        if (apiKey === defaultApiKey) {
+            request.retryFunc = async (request, response, attempt) => {
+                (0, community_js_1.showThrottleMessage)("alchemy");
+                return true;
+            };
+        }
+        return request;
+    }
+}
+exports.AlchemyProvider = AlchemyProvider;
+//# sourceMappingURL=provider-alchemy.js.map