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/wallet/wallet.d.ts

@@ -0,0 +1,71 @@
+import { SigningKey } from "../crypto/index.js";
+import { BaseWallet } from "./base-wallet.js";
+import { HDNodeWallet } from "./hdwallet.js";
+import type { ProgressCallback } from "../crypto/index.js";
+import type { Provider } from "../providers/index.js";
+/**
+ *  A **Wallet** manages a single private key which is used to sign
+ *  transactions, messages and other common payloads.
+ *
+ *  This class is generally the main entry point for developers
+ *  that wish to use a private key directly, as it can create
+ *  instances from a large variety of common sources, including
+ *  raw private key, [[link-bip-39]] mnemonics and encrypte JSON
+ *  wallets.
+ */
+export declare class Wallet extends BaseWallet {
+    #private;
+    /**
+     *  Create a new wallet for the private %%key%%, optionally connected
+     *  to %%provider%%.
+     */
+    constructor(key: string | SigningKey, provider?: null | Provider);
+    connect(provider: null | Provider): Wallet;
+    /**
+     *  Resolves to a [JSON Keystore Wallet](json-wallets) encrypted with
+     *  %%password%%.
+     *
+     *  If %%progressCallback%% is specified, it will receive periodic
+     *  updates as the encryption process progreses.
+     */
+    encrypt(password: Uint8Array | string, progressCallback?: ProgressCallback): Promise<string>;
+    /**
+     *  Returns a [JSON Keystore Wallet](json-wallets) encryped with
+     *  %%password%%.
+     *
+     *  It is preferred to use the [async version](encrypt) instead,
+     *  which allows a [[ProgressCallback]] to keep the user informed.
+     *
+     *  This method will block the event loop (freezing all UI) until
+     *  it is complete, which may be a non-trivial duration.
+     */
+    encryptSync(password: Uint8Array | string): string;
+    /**
+     *  Creates (asynchronously) a **Wallet** by decrypting the %%json%%
+     *  with %%password%%.
+     *
+     *  If %%progress%% is provided, it is called periodically during
+     *  decryption so that any UI can be updated.
+     */
+    static fromEncryptedJson(json: string, password: Uint8Array | string, progress?: ProgressCallback): Promise<HDNodeWallet | Wallet>;
+    /**
+     *  Creates a **Wallet** by decrypting the %%json%% with %%password%%.
+     *
+     *  The [[fromEncryptedJson]] method is preferred, as this method
+     *  will lock up and freeze the UI during decryption, which may take
+     *  some time.
+     */
+    static fromEncryptedJsonSync(json: string, password: Uint8Array | string): HDNodeWallet | Wallet;
+    /**
+     *  Creates a new random [[HDNodeWallet]] using the available
+     *  [cryptographic random source](randomBytes).
+     *
+     *  If there is no crytographic random source, this will throw.
+     */
+    static createRandom(provider?: null | Provider): HDNodeWallet;
+    /**
+     *  Creates a [[HDNodeWallet]] for %%phrase%%.
+     */
+    static fromPhrase(phrase: string, provider?: Provider): HDNodeWallet;
+}
+//# sourceMappingURL=wallet.d.ts.map