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.esm/abi/abi-coder.d.ts

@@ -0,0 +1,61 @@
+/**
+ *  When sending values to or receiving values from a [[Contract]], the
+ *  data is generally encoded using the [ABI standard](link-solc-abi).
+ *
+ *  The AbiCoder provides a utility to encode values to ABI data and
+ *  decode values from ABI data.
+ *
+ *  Most of the time, developers should favour the [[Contract]] class,
+ *  which further abstracts a lot of the finer details of ABI data.
+ *
+ *  @_section api/abi/abi-coder:ABI Encoding
+ */
+import { Result } from "./coders/abstract-coder.js";
+import { ParamType } from "./fragments.js";
+import type { BytesLike, CallExceptionAction, CallExceptionError } from "../utils/index.js";
+/**
+ *  The **AbiCoder** is a low-level class responsible for encoding JavaScript
+ *  values into binary data and decoding binary data into JavaScript values.
+ */
+export declare class AbiCoder {
+    #private;
+    /**
+     *  Get the default values for the given %%types%%.
+     *
+     *  For example, a ``uint`` is by default ``0`` and ``bool``
+     *  is by default ``false``.
+     */
+    getDefaultValue(types: ReadonlyArray<string | ParamType>): Result;
+    /**
+     *  Encode the %%values%% as the %%types%% into ABI data.
+     *
+     *  @returns DataHexstring
+     */
+    encode(types: ReadonlyArray<string | ParamType>, values: ReadonlyArray<any>): string;
+    /**
+     *  Decode the ABI %%data%% as the %%types%% into values.
+     *
+     *  If %%loose%% decoding is enabled, then strict padding is
+     *  not enforced. Some older versions of Solidity incorrectly
+     *  padded event data emitted from ``external`` functions.
+     */
+    decode(types: ReadonlyArray<string | ParamType>, data: BytesLike, loose?: boolean): Result;
+    static _setDefaultMaxInflation(value: number): void;
+    /**
+     *  Returns the shared singleton instance of a default [[AbiCoder]].
+     *
+     *  On the first call, the instance is created internally.
+     */
+    static defaultAbiCoder(): AbiCoder;
+    /**
+     *  Returns an ethers-compatible [[CallExceptionError]] Error for the given
+     *  result %%data%% for the [[CallExceptionAction]] %%action%% against
+     *  the Transaction %%tx%%.
+     */
+    static getBuiltinCallException(action: CallExceptionAction, tx: {
+        to?: null | string;
+        from?: null | string;
+        data?: string;
+    }, data: null | BytesLike): CallExceptionError;
+}
+//# sourceMappingURL=abi-coder.d.ts.map