Teknium
8fe9025abd
feat(compression): lean tail mode + recovery-aware eval arm
Lean mode (tail_mode='lean', default stays 'legacy'):
- tail budget = clamp(2.5% of window, 10K, 25K) instead of 0.20*window
- stale tail tool results demoted to session_search recovery stubs
- chunked identifier-preserving digests of the compacted region (map-reduce,
pristine pre-prune tool contents)
- verbatim user messages embedded in summary (codex retention-by-role rule)
- deterministic session_search recovery footer
Eval: policies matrix gains lean + a '+recovery' arm giving the answerer one
simulated session_search round-trip against the archived region.