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/dotenv/package.json

@@ -0,0 +1,62 @@
+{
+  "name": "dotenv",
+  "version": "17.3.1",
+  "description": "Loads environment variables from .env file",
+  "main": "lib/main.js",
+  "types": "lib/main.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/main.d.ts",
+      "require": "./lib/main.js",
+      "default": "./lib/main.js"
+    },
+    "./config": "./config.js",
+    "./config.js": "./config.js",
+    "./lib/env-options": "./lib/env-options.js",
+    "./lib/env-options.js": "./lib/env-options.js",
+    "./lib/cli-options": "./lib/cli-options.js",
+    "./lib/cli-options.js": "./lib/cli-options.js",
+    "./package.json": "./package.json"
+  },
+  "scripts": {
+    "dts-check": "tsc --project tests/types/tsconfig.json",
+    "lint": "standard",
+    "pretest": "npm run lint && npm run dts-check",
+    "test": "tap run tests/**/*.js --allow-empty-coverage --disable-coverage --timeout=60000",
+    "test:coverage": "tap run tests/**/*.js --show-full-coverage --timeout=60000 --coverage-report=text --coverage-report=lcov",
+    "prerelease": "npm test",
+    "release": "standard-version"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/motdotla/dotenv.git"
+  },
+  "homepage": "https://github.com/motdotla/dotenv#readme",
+  "funding": "https://dotenvx.com",
+  "keywords": [
+    "dotenv",
+    "env",
+    ".env",
+    "environment",
+    "variables",
+    "config",
+    "settings"
+  ],
+  "readmeFilename": "README.md",
+  "license": "BSD-2-Clause",
+  "devDependencies": {
+    "@types/node": "^18.11.3",
+    "decache": "^4.6.2",
+    "sinon": "^14.0.1",
+    "standard": "^17.0.0",
+    "standard-version": "^9.5.0",
+    "tap": "^19.2.0",
+    "typescript": "^4.8.4"
+  },
+  "engines": {
+    "node": ">=12"
+  },
+  "browser": {
+    "fs": false
+  }
+}