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/@nomicfoundation/hardhat-errors/CHANGELOG.md

@@ -0,0 +1,53 @@
+# @nomicfoundation/hardhat-errors
+
+## 3.0.7
+
+### Patch Changes
+
+- 6674b00: Bump `hardhat-utils` major
+- 4cd63e9: Introduce the `@nomicfoundation/hardhat-foundry` plugin for Hardhat 3
+- f1e9b05: Added support for `inline actions` in tasks [7851](https://github.com/NomicFoundation/hardhat/pull/7851).
+
+## 3.0.6
+
+### Patch Changes
+
+- 6b2ed9a: Add ability for task options to be hidden from the CLI ([#7426](https://github.com/NomicFoundation/hardhat/issues/7426))
+
+## 3.0.5
+
+### Patch Changes
+
+- 03a4539: Export error descriptors for the website
+- 95684ac: Full links to documentation replaced by short links with redirects added to the Hardhat website ([#142](https://github.com/NomicFoundation/hardhat-website/issues/142))
+
+## 3.0.4
+
+### Patch Changes
+
+- ce5c22a: Fail when a file isn't built neither as contract nor test
+
+## 3.0.3
+
+### Patch Changes
+
+- a871e3e: Ported the `@nomicfoundation/hardhat-ledger` plugin to Hardhat 3 ([#5646](https://github.com/NomicFoundation/hardhat/issues/5646))
+
+## 3.0.2
+
+### Patch Changes
+
+- be469d6: Display an error message when attempting to use a global hardhat installation in a local repo ([#5362](https://github.com/NomicFoundation/hardhat/issues/5362))
+- 8d3b16c: Support for custom compilers ([#7130](https://github.com/NomicFoundation/hardhat/issues/7130))
+
+## 3.0.1
+
+### Patch Changes
+
+- ddefbff: Added guard to stop multiple simultaneous calls to `ignition.deploy(...)` at once ([#6440](https://github.com/NomicFoundation/hardhat/issues/6440))
+
+## 3.0.0
+
+### Major Changes
+
+- 29cc141: First release of Hardhat 3!