Record the initial AutoCompactWindowIds window_id in session_meta.context_window so JSONL tailers can observe the first context window before any compaction item exists. Thread creation now requires an initial_window_id string, while rollout JSONL keeps that value under the context_window namespace without writing derived chain fields for the initial window. Resume reconstruction derives window 0 state from that initial window_id and still prefers compacted window metadata once compaction records exist.
Verification:
- just test -p codex-protocol
- just test -p codex-rollout recorder_materializes_on_flush_with_pending_items
- just test -p codex-core reconstruct_history_restores_initial_window_from_session_meta
- just test -p codex-core reconstruct_history_prefers_compacted_window_over_session_meta
- just test -p codex-thread-store
- just test -p codex-state
- just test -p codex-app-server thread_read_returns_summary_without_turns
- just fix -p codex-protocol -p codex-rollout -p codex-thread-store -p codex-core -p codex-app-server
Michael Bolin
e5b953253b