Razvan Dimescu 6d9ee14ea6 refactor: unify warm_stale/warm_domain, remove raw_wire alloc, add Freshness enum ...

- Extract refresh_entry in ctx.rs — warm_domain in main.rs now delegates
  to it instead of duplicating the resolve+cache logic (~40 lines removed)
- Eliminate unconditional .to_vec() of raw wire on every UDP/DoT query —
  pass &buffer.buf[..len] directly (zero-cost for cache hits)
- Replace bare bool stale flag with Freshness enum (Fresh/NearExpiry/Stale)
  making the three states self-documenting at every call site

2026-04-12 19:56:42 +03:00

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