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/enquirer/lib/timer.js

@@ -0,0 +1,38 @@
+'use strict';
+
+module.exports = prompt => {
+  prompt.timers = prompt.timers || {};
+
+  let timers = prompt.options.timers;
+  if (!timers) return;
+
+  for (let key of Object.keys(timers)) {
+    let opts = timers[key];
+    if (typeof opts === 'number') {
+      opts = { interval: opts };
+    }
+    create(prompt, key, opts);
+  }
+};
+
+function create(prompt, name, options = {}) {
+  let timer = prompt.timers[name] = { name, start: Date.now(), ms: 0, tick: 0 };
+  let ms = options.interval || 120;
+  timer.frames = options.frames || [];
+  timer.loading = true;
+
+  let interval = setInterval(() => {
+    timer.ms = Date.now() - timer.start;
+    timer.tick++;
+    prompt.render();
+  }, ms);
+
+  timer.stop = () => {
+    timer.loading = false;
+    clearInterval(interval);
+  };
+
+  Reflect.defineProperty(timer, 'interval', { value: interval });
+  prompt.once('close', () => timer.stop());
+  return timer.stop;
+}