- bot.js: 5 retries with 5s delay on init, graceful fallback to null
- errorHandler.js: 5 retries on 404 (invalid token), stops polling after
max retries but keeps process alive for admin panel
- config.js: BOT_TOKEN missing logs warning instead of process.exit
- index.js: bot handlers only registered when bot is available,
admin panel always starts regardless of bot status