diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
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+{"sessionId":"45eccd49-4ce6-4a07-af1c-9bff461d40c9","pid":1030431,"procStart":"52754552","acquiredAt":1779633135793}
\ No newline at end of file
diff --git a/docs/01_fix_prefill_overflow.md b/docs/01_fix_prefill_overflow.md
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+# Chantier 1 — prefill multi-ubatch (cli hang pp512+)
+
+## Symptôme
+cli prompt court OK; gros prefill pend. bench pp512 OK (1 ubatch). unaccounted=2^44 = cosmétique.
+Hyp: prompt > n_ubatch → 2e ubatch prefill GDN → boucle handoff état S.
+
+## Étape 1: trouver le seuil
+
+## Conclusion: NON-BUG cote moteur
+bench pp2048 (4 ubatches @b512) = 46.2 t/s OK. Multi-ubatch sain. cli court=8tok gen OK; cli ~160tok pend = bug cli interactif/reasoning, PAS lib. Kazeia = lib JNI, pas cli. unaccounted 2^44 = cosmetique breakdown. => chantier 1 CLOS, aucun fix moteur. Bench est le harness de ref. cli a eviter prod.