v3.10.71 — bigger /lookback presets

🔭 The /lookback autocomplete now offers 50 / 150 / 250 user turns (was 5–50).

pip install --upgrade dulus

The small windows were cutting context mid-conversation now that a single turn drags its whole tool trail. Counts user TURNS (each carries its tools); the full archive always stays local via loopback. 🦅🇩🇴