- spec-type → ngram-mod (no separate draft model) - drop --model-draft, --spec-draft-n-max; add --spec-ngram-mod-n-min/max/match - DFlash batch default fallback SPEC_TYPE → ngram-mod - env: SPEC_TYPE=ngram-mod, NGRAM_MOD_N_MIN=48, N_MAX=64, N_MATCH=24 - DRAFT_FILE env var emptied (not used under ngram-mod)