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5b9108ac18
Codex history normalization was downgrading reasoning into plain assistant text because of branch ordering, not because the raw data was missing. Why this mattered: - Codex reasoning JSONL entries are intentionally mapped to history items with type thinking, but they also carry message.role assistant. - normalizeHistoryEntry evaluated the assistant-role branch before the thinking branch. - As a result, reasoning content matched the assistant-text path first and was emitted as kind text instead of kind thinking. - This collapses semantic intent, so UI and downstream features that rely on thinking blocks (separate rendering, filtering, and interpretation of model thought process vs final answer) receive the wrong message kind. What changed: - Prioritized thinking detection (raw.type === thinking or raw.isReasoning) before role-based assistant normalization. - Kept a non-empty content guard for thinking payloads to avoid emitting empty artifacts. Impact: - Reasoning entries from persisted Codex JSONL now remain thinking blocks end-to-end. - Regular assistant text normalization behavior remains unchanged.