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/crypto/index.js

@@ -0,0 +1,49 @@
+"use strict";
+/**
+ *  A fundamental building block of Ethereum is the underlying
+ *  cryptographic primitives.
+ *
+ *  @_section: api/crypto:Cryptographic Functions   [about-crypto]
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.lock = exports.Signature = exports.SigningKey = exports.scryptSync = exports.scrypt = exports.pbkdf2 = exports.sha512 = exports.sha256 = exports.ripemd160 = exports.keccak256 = exports.randomBytes = exports.computeHmac = void 0;
+null;
+// We import all these so we can export lock()
+const hmac_js_1 = require("./hmac.js");
+Object.defineProperty(exports, "computeHmac", { enumerable: true, get: function () { return hmac_js_1.computeHmac; } });
+const keccak_js_1 = require("./keccak.js");
+Object.defineProperty(exports, "keccak256", { enumerable: true, get: function () { return keccak_js_1.keccak256; } });
+const ripemd160_js_1 = require("./ripemd160.js");
+Object.defineProperty(exports, "ripemd160", { enumerable: true, get: function () { return ripemd160_js_1.ripemd160; } });
+const pbkdf2_js_1 = require("./pbkdf2.js");
+Object.defineProperty(exports, "pbkdf2", { enumerable: true, get: function () { return pbkdf2_js_1.pbkdf2; } });
+const random_js_1 = require("./random.js");
+Object.defineProperty(exports, "randomBytes", { enumerable: true, get: function () { return random_js_1.randomBytes; } });
+const scrypt_js_1 = require("./scrypt.js");
+Object.defineProperty(exports, "scrypt", { enumerable: true, get: function () { return scrypt_js_1.scrypt; } });
+Object.defineProperty(exports, "scryptSync", { enumerable: true, get: function () { return scrypt_js_1.scryptSync; } });
+const sha2_js_1 = require("./sha2.js");
+Object.defineProperty(exports, "sha256", { enumerable: true, get: function () { return sha2_js_1.sha256; } });
+Object.defineProperty(exports, "sha512", { enumerable: true, get: function () { return sha2_js_1.sha512; } });
+var signing_key_js_1 = require("./signing-key.js");
+Object.defineProperty(exports, "SigningKey", { enumerable: true, get: function () { return signing_key_js_1.SigningKey; } });
+var signature_js_1 = require("./signature.js");
+Object.defineProperty(exports, "Signature", { enumerable: true, get: function () { return signature_js_1.Signature; } });
+/**
+ *  Once called, prevents any future change to the underlying cryptographic
+ *  primitives using the ``.register`` feature for hooks.
+ */
+function lock() {
+    hmac_js_1.computeHmac.lock();
+    keccak_js_1.keccak256.lock();
+    pbkdf2_js_1.pbkdf2.lock();
+    random_js_1.randomBytes.lock();
+    ripemd160_js_1.ripemd160.lock();
+    scrypt_js_1.scrypt.lock();
+    scrypt_js_1.scryptSync.lock();
+    sha2_js_1.sha256.lock();
+    sha2_js_1.sha512.lock();
+    random_js_1.randomBytes.lock();
+}
+exports.lock = lock;
+//# sourceMappingURL=index.js.map