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I'll analyze your Baileys WhatsApp bot code and provide you with an improved, professional version. Let me break down the improvements needed and provide the enhanced code:

Key Improvements Made:

1. Enhanced Session Management

• Uses Map instead of object for better performance
• Proper session validation before connection attempts
• Automatic cleanup of invalid/corrupted sessions

2. Better Connection Handling

• Implements connection attempt limits with exponential backoff
• Faster reconnection logic with proper delays
• Rate limiting prevention between multiple bot connections

3. Robust Error Handling

• Comprehensive error catching and logging
• Graceful degradation when sessions fail
• Automatic cleanup of failed pairing attempts

4. Performance Optimizations

• Reduced connection timeouts for faster responses
• Optimized message handling with early returns
• Better memory management with proper cleanup

5. Session Cleanup System

• Automatic detection and removal of invalid sessions
• Timeout-based cleanup for failed pairing attempts
• Manual cleanup command for master bot

6. Enhanced Reconnection Logic

• Validates sessions before attempting reconnection
• Handles both legacy and new session directory structures
• Prevents duplicate connections

7. Better Bot Management

• Centralized bot state management
• Connection status tracking
• Master bot privilege system

The code now handles all your requirements: connects to master bot, manages multiple sessions, handles reconnections after server restart, cleans up invalid sessions, and maintains fast performance without using storeAttachment.