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/src.ts/utils/index.ts

@@ -0,0 +1,95 @@
+/**
+ *  There are many simple utilities required to interact with
+ *  Ethereum and to simplify the library, without increasing
+ *  the library dependencies for simple functions.
+ *
+ *  @_section api/utils:Utilities  [about-utils]
+ */
+
+export { decodeBase58, encodeBase58 } from "./base58.js";
+
+export { decodeBase64, encodeBase64 } from "./base64.js";
+
+export {
+    getBytes, getBytesCopy, isHexString, isBytesLike, hexlify, concat, dataLength, dataSlice,
+    stripZerosLeft, zeroPadValue, zeroPadBytes
+} from "./data.js";
+
+export {
+    isCallException, isError,
+    assert, assertArgument, assertArgumentCount, assertPrivate, assertNormalize, makeError
+} from "./errors.js"
+
+export { EventPayload } from "./events.js";
+
+export {
+    FetchRequest, FetchResponse, FetchCancelSignal,
+} from "./fetch.js";
+
+export { FixedNumber } from "./fixednumber.js"
+
+export {
+    fromTwos, toTwos, mask,
+    getBigInt, getNumber, getUint, toBigInt, toNumber, toBeHex, toBeArray, toQuantity
+} from "./maths.js";
+
+export { resolveProperties, defineProperties} from "./properties.js";
+
+export { decodeRlp } from "./rlp-decode.js";
+export { encodeRlp } from "./rlp-encode.js";
+
+export { formatEther, parseEther, formatUnits, parseUnits } from "./units.js";
+
+export {
+    toUtf8Bytes,
+    toUtf8CodePoints,
+    toUtf8String,
+
+    Utf8ErrorFuncs,
+} from "./utf8.js";
+
+export { uuidV4 } from "./uuid.js";
+
+/////////////////////////////
+// Types
+
+export type { BytesLike } from "./data.js";
+
+export type {
+
+    //ErrorFetchRequestWithBody, ErrorFetchRequest,
+    //ErrorFetchResponseWithBody, ErrorFetchResponse,
+
+    ErrorCode,
+
+    EthersError, UnknownError, NotImplementedError, UnsupportedOperationError, NetworkError,
+    ServerError, TimeoutError, BadDataError, CancelledError, BufferOverrunError,
+    NumericFaultError, InvalidArgumentError, MissingArgumentError, UnexpectedArgumentError,
+    CallExceptionError, InsufficientFundsError, NonceExpiredError, OffchainFaultError,
+    ReplacementUnderpricedError, TransactionReplacedError, UnconfiguredNameError,
+    ActionRejectedError,
+
+    CallExceptionAction, CallExceptionTransaction,
+
+    CodedEthersError
+} from "./errors.js"
+
+export type { EventEmitterable, Listener } from "./events.js";
+
+export type {
+    GetUrlResponse,
+    FetchPreflightFunc, FetchProcessFunc, FetchRetryFunc,
+    FetchGatewayFunc, FetchGetUrlFunc
+} from "./fetch.js";
+
+export type { FixedFormat } from "./fixednumber.js"
+
+export type { BigNumberish, Numeric } from "./maths.js";
+
+export type { RlpStructuredData, RlpStructuredDataish } from "./rlp.js";
+
+export type {
+    Utf8ErrorFunc,
+    UnicodeNormalizationForm,
+    Utf8ErrorReason
+} from "./utf8.js";