Created server package with:
- server.go: Server struct and core methods
- handlers.go: HTTP handlers for health, KV operations, cluster management
- routes.go: HTTP route setup
- lifecycle.go: Server startup/shutdown logic
This moves ~400 lines of server-related code from main.go to dedicated
server package for better organization.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
