Razvan Dimescu 9c71e9bb3f refactor to async tokio with modular architecture ...

- Replace synchronous std::net::UdpSocket with tokio async runtime
- Spawn concurrent task per incoming DNS query via tokio::spawn
- Extract monolithic main.rs into modules: buffer, header, question,
  record, packet, config, cache, forward, stats
- Share state across tasks via Arc<ServerCtx> with scoped Mutex locks
- Add TOML config loading, TTL-aware cache, structured logging, stats
- Add CLAUDE.md, README, dns_fun.toml config, and design docs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-10 04:50:16 +02:00

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