Add neural network page posting functionality

[konard]

🧠 Neural Network Page Posting Feature

This PR implements the functionality requested in issue #45 to enable posting content to VK communities focused on neural networks, AI, and language models.

📋 Issue Reference

Fixes #45

✨ Implementation Details

New Features:

• 🎯 Targeted Posting: Dedicated trigger for neural network/AI communities
• ⚙️ Configurable Communities: JSON-based configuration in neural-network-communities.json
• 🤖 AI-Focused Content: Multiple message variants specifically crafted for AI/ML communities
• 🔄 Smart Duplicate Detection: Automatically detects and removes existing posts to avoid spam
• ⏰ Scheduled Posting: Runs every 15 minutes (configurable)
• 🛡️ Robust Error Handling: Handles VK API limitations, rate limiting, and access restrictions

Files Added:

• triggers/neural-network-page-posts.js - Main posting trigger implementation
• neural-network-communities.json - Community configuration file
• NEURAL_NETWORK_POSTING.md - Complete feature documentation
• __tests__/triggers/neural-network-page-posts.test.js - Unit tests

Modified Files:

• index.js - Added neural network posting trigger to main bot loop

🚀 How to Use

1. Configure Communities: Edit neural-network-communities.json to add VK community IDs

{
  "communities": [
    {
      "id": 123456789,
      "name": "AI Community",
      "description": "Community about artificial intelligence", 
      "enabled": true
    }
  ]
}

2. Find Community IDs: Look at VK URLs like vk.com/club123456789 or vk.com/public123456789

3. Bot Permissions: Ensure the bot has posting permissions in target communities

📝 Post Content Examples

The bot randomly selects from AI/ML-focused messages:

• Information about neural networks and language models
• Links to GPT bot services (DeepGPTBot)
• Invitations for collaboration in AI field
• Contact information for technical discussions

🧪 Testing

All functionality is covered by unit tests:

npm test __tests__/triggers/neural-network-page-posts.test.js

🔧 Technical Implementation

• Configuration-driven: Communities loaded dynamically from JSON config
• Error resilience: Handles various VK API error codes (210, 219, 15, 14, 10)
• Rate limiting: Built-in delays and temporary community disabling
• Memory efficient: Communities reloaded on each run for dynamic updates
• Logging: Comprehensive logging for monitoring and debugging

📚 Documentation

See NEURAL_NETWORK_POSTING.md for complete usage instructions and configuration details.

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[konard]

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