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/utils/units.d.ts

@@ -0,0 +1,24 @@
+import type { BigNumberish, Numeric } from "../utils/index.js";
+/**
+ *  Converts %%value%% into a //decimal string//, assuming %%unit%% decimal
+ *  places. The %%unit%% may be the number of decimal places or the name of
+ *  a unit (e.g. ``"gwei"`` for 9 decimal places).
+ *
+ */
+export declare function formatUnits(value: BigNumberish, unit?: string | Numeric): string;
+/**
+ *  Converts the //decimal string// %%value%% to a BigInt, assuming
+ *  %%unit%% decimal places. The %%unit%% may the number of decimal places
+ *  or the name of a unit (e.g. ``"gwei"`` for 9 decimal places).
+ */
+export declare function parseUnits(value: string, unit?: string | Numeric): bigint;
+/**
+ *  Converts %%value%% into a //decimal string// using 18 decimal places.
+ */
+export declare function formatEther(wei: BigNumberish): string;
+/**
+ *  Converts the //decimal string// %%ether%% to a BigInt, using 18
+ *  decimal places.
+ */
+export declare function parseEther(ether: string): bigint;
+//# sourceMappingURL=units.d.ts.map