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/address/address.ts

@@ -0,0 +1,173 @@
+import { keccak256 } from "../crypto/index.js";
+import { getBytes, assertArgument } from "../utils/index.js";
+
+
+const BN_0 = BigInt(0);
+const BN_36 = BigInt(36);
+
+function getChecksumAddress(address: string): string {
+//    if (!isHexString(address, 20)) {
+//        logger.throwArgumentError("invalid address", "address", address);
+//    }
+
+    address = address.toLowerCase();
+
+    const chars = address.substring(2).split("");
+
+    const expanded = new Uint8Array(40);
+    for (let i = 0; i < 40; i++) {
+        expanded[i] = chars[i].charCodeAt(0);
+    }
+
+    const hashed = getBytes(keccak256(expanded));
+
+    for (let i = 0; i < 40; i += 2) {
+        if ((hashed[i >> 1] >> 4) >= 8) {
+            chars[i] = chars[i].toUpperCase();
+        }
+        if ((hashed[i >> 1] & 0x0f) >= 8) {
+            chars[i + 1] = chars[i + 1].toUpperCase();
+        }
+    }
+
+    return "0x" + chars.join("");
+}
+
+// See: https://en.wikipedia.org/wiki/International_Bank_Account_Number
+
+// Create lookup table
+const ibanLookup: { [character: string]: string } = { };
+for (let i = 0; i < 10; i++) { ibanLookup[String(i)] = String(i); }
+for (let i = 0; i < 26; i++) { ibanLookup[String.fromCharCode(65 + i)] = String(10 + i); }
+
+// How many decimal digits can we process? (for 64-bit float, this is 15)
+// i.e. Math.floor(Math.log10(Number.MAX_SAFE_INTEGER));
+const safeDigits = 15;
+
+function ibanChecksum(address: string): string {
+    address = address.toUpperCase();
+    address = address.substring(4) + address.substring(0, 2) + "00";
+
+    let expanded = address.split("").map((c) => { return ibanLookup[c]; }).join("");
+
+    // Javascript can handle integers safely up to 15 (decimal) digits
+    while (expanded.length >= safeDigits){
+        let block = expanded.substring(0, safeDigits);
+        expanded = parseInt(block, 10) % 97 + expanded.substring(block.length);
+    }
+
+    let checksum = String(98 - (parseInt(expanded, 10) % 97));
+    while (checksum.length < 2) { checksum = "0" + checksum; }
+
+    return checksum;
+};
+
+const Base36 = (function() {;
+    const result: Record<string, bigint> = { };
+    for (let i = 0; i < 36; i++) {
+        const key = "0123456789abcdefghijklmnopqrstuvwxyz"[i];
+        result[key] = BigInt(i);
+    }
+    return result;
+})();
+
+function fromBase36(value: string): bigint {
+    value = value.toLowerCase();
+
+    let result = BN_0;
+    for (let i = 0; i < value.length; i++) {
+        result = result * BN_36 + Base36[value[i]];
+    }
+    return result;
+}
+
+/**
+ *  Returns a normalized and checksumed address for %%address%%.
+ *  This accepts non-checksum addresses, checksum addresses and
+ *  [[getIcapAddress]] formats.
+ *
+ *  The checksum in Ethereum uses the capitalization (upper-case
+ *  vs lower-case) of the characters within an address to encode
+ *  its checksum, which offers, on average, a checksum of 15-bits.
+ *
+ *  If %%address%% contains both upper-case and lower-case, it is
+ *  assumed to already be a checksum address and its checksum is
+ *  validated, and if the address fails its expected checksum an
+ *  error is thrown.
+ *
+ *  If you wish the checksum of %%address%% to be ignore, it should
+ *  be converted to lower-case (i.e. ``.toLowercase()``) before
+ *  being passed in. This should be a very rare situation though,
+ *  that you wish to bypass the safegaurds in place to protect
+ *  against an address that has been incorrectly copied from another
+ *  source.
+ *
+ *  @example:
+ *    // Adds the checksum (via upper-casing specific letters)
+ *    getAddress("0x8ba1f109551bd432803012645ac136ddd64dba72")
+ *    //_result:
+ *
+ *    // Converts ICAP address and adds checksum
+ *    getAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36");
+ *    //_result:
+ *
+ *    // Throws an error if an address contains mixed case,
+ *    // but the checksum fails
+ *    getAddress("0x8Ba1f109551bD432803012645Ac136ddd64DBA72")
+ *    //_error:
+ */
+export function getAddress(address: string): string {
+
+    assertArgument(typeof(address) === "string", "invalid address", "address", address);
+
+    if (address.match(/^(0x)?[0-9a-fA-F]{40}$/)) {
+
+        // Missing the 0x prefix
+        if (!address.startsWith("0x")) { address = "0x" + address; }
+
+        const result = getChecksumAddress(address);
+
+        // It is a checksummed address with a bad checksum
+        assertArgument(!address.match(/([A-F].*[a-f])|([a-f].*[A-F])/) || result === address,
+            "bad address checksum", "address", address);
+
+        return result;
+    }
+
+    // Maybe ICAP? (we only support direct mode)
+    if (address.match(/^XE[0-9]{2}[0-9A-Za-z]{30,31}$/)) {
+        // It is an ICAP address with a bad checksum
+        assertArgument(address.substring(2, 4) === ibanChecksum(address), "bad icap checksum", "address", address);
+
+        let result = fromBase36(address.substring(4)).toString(16);
+        while (result.length < 40) { result = "0" + result; }
+        return  getChecksumAddress("0x" + result);
+    }
+
+    assertArgument(false, "invalid address", "address", address);
+}
+
+/**
+ *  The [ICAP Address format](link-icap) format is an early checksum
+ *  format which attempts to be compatible with the banking
+ *  industry [IBAN format](link-wiki-iban) for bank accounts.
+ *
+ *  It is no longer common or a recommended format.
+ *
+ *  @example:
+ *    getIcapAddress("0x8ba1f109551bd432803012645ac136ddd64dba72");
+ *    //_result:
+ *
+ *    getIcapAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36");
+ *    //_result:
+ *
+ *    // Throws an error if the ICAP checksum is wrong
+ *    getIcapAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK37");
+ *    //_error:
+ */
+export function getIcapAddress(address: string): string {
+    //let base36 = _base16To36(getAddress(address).substring(2)).toUpperCase();
+    let base36 = BigInt(getAddress(address)).toString(36).toUpperCase();
+    while (base36.length < 30) { base36 = "0" + base36; }
+    return "XE" + ibanChecksum("XE00" + base36) + base36;
+}

dev/env/node_modules/ethers/src.ts/address/checks.ts

@@ -0,0 +1,123 @@
+import { assert, assertArgument } from "../utils/index.js";
+
+import { getAddress } from "./address.js";
+
+import type { Addressable, AddressLike, NameResolver } from "./index.js";
+
+
+/**
+ *  Returns true if %%value%% is an object which implements the
+ *  [[Addressable]] interface.
+ *
+ *  @example:
+ *    // Wallets and AbstractSigner sub-classes
+ *    isAddressable(Wallet.createRandom())
+ *    //_result:
+ *
+ *    // Contracts
+ *    contract = new Contract("dai.tokens.ethers.eth", [ ], provider)
+ *    isAddressable(contract)
+ *    //_result:
+ */
+export function isAddressable(value: any): value is Addressable {
+    return (value && typeof(value.getAddress) === "function");
+}
+
+/**
+ *  Returns true if %%value%% is a valid address.
+ *
+ *  @example:
+ *    // Valid address
+ *    isAddress("0x8ba1f109551bD432803012645Ac136ddd64DBA72")
+ *    //_result:
+ *
+ *    // Valid ICAP address
+ *    isAddress("XE65GB6LDNXYOFTX0NSV3FUWKOWIXAMJK36")
+ *    //_result:
+ *
+ *    // Invalid checksum
+ *    isAddress("0x8Ba1f109551bD432803012645Ac136ddd64DBa72")
+ *    //_result:
+ *
+ *    // Invalid ICAP checksum
+ *    isAddress("0x8Ba1f109551bD432803012645Ac136ddd64DBA72")
+ *    //_result:
+ *
+ *    // Not an address (an ENS name requires a provided and an
+ *    // asynchronous API to access)
+ *    isAddress("ricmoo.eth")
+ *    //_result:
+ */
+export function isAddress(value: any): value is string {
+    try {
+        getAddress(value);
+        return true;
+    } catch (error) { }
+    return false;
+}
+
+async function checkAddress(target: any, promise: Promise<null | string>): Promise<string> {
+    const result = await promise;
+    if (result == null || result === "0x0000000000000000000000000000000000000000") {
+        assert(typeof(target) !== "string", "unconfigured name", "UNCONFIGURED_NAME", { value: target });
+        assertArgument(false, "invalid AddressLike value; did not resolve to a value address", "target", target);
+    }
+    return getAddress(result);
+}
+
+/**
+ *  Resolves to an address for the %%target%%, which may be any
+ *  supported address type, an [[Addressable]] or a Promise which
+ *  resolves to an address.
+ *
+ *  If an ENS name is provided, but that name has not been correctly
+ *  configured a [[UnconfiguredNameError]] is thrown.
+ *
+ *  @example:
+ *    addr = "0x6B175474E89094C44Da98b954EedeAC495271d0F"
+ *
+ *    // Addresses are return synchronously
+ *    resolveAddress(addr, provider)
+ *    //_result:
+ *
+ *    // Address promises are resolved asynchronously
+ *    resolveAddress(Promise.resolve(addr))
+ *    //_result:
+ *
+ *    // ENS names are resolved asynchronously
+ *    resolveAddress("dai.tokens.ethers.eth", provider)
+ *    //_result:
+ *
+ *    // Addressable objects are resolved asynchronously
+ *    contract = new Contract(addr, [ ])
+ *    resolveAddress(contract, provider)
+ *    //_result:
+ *
+ *    // Unconfigured ENS names reject
+ *    resolveAddress("nothing-here.ricmoo.eth", provider)
+ *    //_error:
+ *
+ *    // ENS names require a NameResolver object passed in
+ *    // (notice the provider was omitted)
+ *    resolveAddress("nothing-here.ricmoo.eth")
+ *    //_error:
+ */
+export function resolveAddress(target: AddressLike, resolver?: null | NameResolver): string | Promise<string> {
+
+    if (typeof(target) === "string") {
+        if (target.match(/^0x[0-9a-f]{40}$/i)) { return getAddress(target); }
+
+        assert(resolver != null, "ENS resolution requires a provider",
+            "UNSUPPORTED_OPERATION", { operation: "resolveName" });
+
+        return checkAddress(target, resolver.resolveName(target));
+
+    } else if (isAddressable(target)) {
+        return checkAddress(target, target.getAddress());
+
+    } else if (target && typeof(target.then) === "function") {
+        return checkAddress(target, target);
+    }
+
+    assertArgument(false, "unsupported addressable value", "target", target);
+}

dev/env/node_modules/ethers/src.ts/address/contract-address.ts

@@ -0,0 +1,80 @@
+import { keccak256 } from "../crypto/index.js";
+import {
+    concat, dataSlice, getBigInt, getBytes, encodeRlp, assertArgument
+} from "../utils/index.js";
+
+import { getAddress } from "./address.js";
+
+import type { BigNumberish, BytesLike } from "../utils/index.js";
+
+
+// http://ethereum.stackexchange.com/questions/760/how-is-the-address-of-an-ethereum-contract-computed
+
+/**
+ *  Returns the address that would result from a ``CREATE`` for %%tx%%.
+ *
+ *  This can be used to compute the address a contract will be
+ *  deployed to by an EOA when sending a deployment transaction (i.e.
+ *  when the ``to`` address is ``null``).
+ *
+ *  This can also be used to compute the address a contract will be
+ *  deployed to by a contract, by using the contract's address as the
+ *  ``to`` and the contract's nonce.
+ *
+ *  @example
+ *    from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72";
+ *    nonce = 5;
+ *
+ *    getCreateAddress({ from, nonce });
+ *    //_result:
+ */
+export function getCreateAddress(tx: { from: string, nonce: BigNumberish }): string {
+    const from = getAddress(tx.from);
+    const nonce = getBigInt(tx.nonce, "tx.nonce");
+
+    let nonceHex = nonce.toString(16);
+    if (nonceHex === "0") {
+        nonceHex = "0x";
+    } else if (nonceHex.length % 2) {
+        nonceHex = "0x0" + nonceHex;
+    } else {
+        nonceHex = "0x" + nonceHex;
+    }
+
+    return getAddress(dataSlice(keccak256(encodeRlp([ from, nonceHex ])), 12));
+}
+
+/**
+ *  Returns the address that would result from a ``CREATE2`` operation
+ *  with the given %%from%%, %%salt%% and %%initCodeHash%%.
+ *
+ *  To compute the %%initCodeHash%% from a contract's init code, use
+ *  the [[keccak256]] function.
+ *
+ *  For a quick overview and example of ``CREATE2``, see [[link-ricmoo-wisps]].
+ *
+ *  @example
+ *    // The address of the contract
+ *    from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72"
+ *
+ *    // The salt
+ *    salt = id("HelloWorld")
+ *
+ *    // The hash of the initCode
+ *    initCode = "0x6394198df16000526103ff60206004601c335afa6040516060f3";
+ *    initCodeHash = keccak256(initCode)
+ *
+ *    getCreate2Address(from, salt, initCodeHash)
+ *    //_result:
+ */
+export function getCreate2Address(_from: string, _salt: BytesLike, _initCodeHash: BytesLike): string {
+    const from = getAddress(_from);
+    const salt = getBytes(_salt, "salt");
+    const initCodeHash = getBytes(_initCodeHash, "initCodeHash");
+
+    assertArgument(salt.length === 32, "salt must be 32 bytes", "salt", _salt);
+
+    assertArgument(initCodeHash.length === 32, "initCodeHash must be 32 bytes", "initCodeHash", _initCodeHash);
+
+    return getAddress(dataSlice(keccak256(concat([ "0xff", from, salt, initCodeHash ])), 12))
+}

dev/env/node_modules/ethers/src.ts/address/index.ts

@@ -0,0 +1,57 @@
+/**
+ *  Addresses are a fundamental part of interacting with Ethereum. They
+ *  represent the global identity of Externally Owned Accounts (accounts
+ *  backed by a private key) and contracts.
+ *
+ *  The Ethereum Naming Service (ENS) provides an interconnected ecosystem
+ *  of contracts, standards and libraries which enable looking up an
+ *  address for an ENS name.
+ *
+ *  These functions help convert between various formats, validate
+ *  addresses and safely resolve ENS names.
+ *
+ *  @_section: api/address:Addresses  [about-addresses]
+ */
+
+null;
+
+/**
+ *  An interface for objects which have an address, and can
+ *  resolve it asyncronously.
+ *
+ *  This allows objects such as [[Signer]] or [[Contract]] to
+ *  be used most places an address can be, for example getting
+ *  the [balance](Provider-getBalance).
+ */
+export interface Addressable {
+    /**
+     *  Get the object address.
+     */
+    getAddress(): Promise<string>;
+}
+
+/**
+ *  Anything that can be used to return or resolve an address.
+ */
+export type AddressLike = string | Promise<string> | Addressable;
+
+/**
+ *  An interface for any object which can resolve an ENS name.
+ */
+export interface NameResolver {
+    /**
+     *  Resolve to the address for the ENS %%name%%.
+     *
+     *  Resolves to ``null`` if the name is unconfigued. Use
+     *  [[resolveAddress]] (passing this object as %%resolver%%) to
+     *  throw for names that are unconfigured.
+     */
+    resolveName(name: string): Promise<null | string>;
+}
+
+export { getAddress, getIcapAddress } from "./address.js";
+
+export { getCreateAddress, getCreate2Address } from "./contract-address.js";
+
+
+export { isAddressable, isAddress, resolveAddress } from "./checks.js";