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/resolve-pkg-maps/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "resolve-pkg-maps",
+  "version": "1.0.0",
+  "description": "Resolve package.json exports & imports maps",
+  "keywords": [
+    "node.js",
+    "package.json",
+    "exports",
+    "imports"
+  ],
+  "license": "MIT",
+  "repository": "privatenumber/resolve-pkg-maps",
+  "funding": "https://github.com/privatenumber/resolve-pkg-maps?sponsor=1",
+  "author": {
+    "name": "Hiroki Osame",
+    "email": "hiroki.osame@gmail.com"
+  },
+  "type": "module",
+  "files": [
+    "dist"
+  ],
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.cts",
+  "exports": {
+    "require": {
+      "types": "./dist/index.d.cts",
+      "default": "./dist/index.cjs"
+    },
+    "import": {
+      "types": "./dist/index.d.mts",
+      "default": "./dist/index.mjs"
+    }
+  },
+  "imports": {
+    "#resolve-pkg-maps": {
+      "types": "./src/index.ts",
+      "development": "./src/index.ts",
+      "default": "./dist/index.mjs"
+    }
+  }
+}