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/prompts/quiz.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const SelectPrompt = require('./select');
+
+class Quiz extends SelectPrompt {
+  constructor(options) {
+    super(options);
+    if (typeof this.options.correctChoice !== 'number' || this.options.correctChoice < 0) {
+      throw new Error('Please specify the index of the correct answer from the list of choices');
+    }
+  }
+
+  async toChoices(value, parent) {
+    let choices = await super.toChoices(value, parent);
+    if (choices.length < 2) {
+      throw new Error('Please give at least two choices to the user');
+    }
+    if (this.options.correctChoice > choices.length) {
+      throw new Error('Please specify the index of the correct answer from the list of choices');
+    }
+    return choices;
+  }
+
+  check(state) {
+    return state.index === this.options.correctChoice;
+  }
+
+  async result(selected) {
+    return {
+      selectedAnswer: selected,
+      correctAnswer: this.options.choices[this.options.correctChoice].value,
+      correct: await this.check(this.state)
+    };
+  }
+}
+
+module.exports = Quiz;