Track X bot state files for session continuity
- Add x_queue/last_seen_id.json to track last processed mention ID
- Add x_queue/processed_mentions.json to prevent duplicate processing
- Update .gitignore to track critical state files while ignoring temp files
- Ensures bot maintains state across restarts and deployments
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>