~/.codex/sessions/YYYY/MM/DD/rollout-*.jsonl — every user and assistant turn becomes a searchable record. Reasoning, tool-call, and role: developer lines (injected system-prompt noise) are excluded; text blocks are decoded to prose.
duckbrain watch streams new rollout lines live as Codex writes them, with batch backfill over the same files as a safety net.
Facet mapping
classification: confidential.