- Extract bridge user detection logic into separate isBridgeUserMessage() function
- Fix gocritic ifElseChain issues by converting if-else to switch statements
- Fix gofmt formatting issues in client.go
- Fix revive naming issues by renaming XMPPUser to User and XMPPUserManager to UserManager
- Improve code organization and maintainability
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
