Owen Lin
7affe3e3e4
## Stack 1. [#30956](https://github.com/openai/codex/pull/30956) — isolate legacy item fanout ← **this PR** 2. [#30283](https://github.com/openai/codex/pull/30283) — emit canonical `TurnItem` lifecycle 3. [#30188](https://github.com/openai/codex/pull/30188) — persist canonical items for paginated threads ## Description Move legacy `EventMsg` projection code out of the canonical item and protocol schema modules into `protocol/src/legacy_events.rs`. This is a behavior-neutral extraction. It keeps the existing `HasLegacyEvent` API and the existing legacy projections unchanged, while giving compatibility fanout a single home. ## Why Canonical `TurnItem` types and wire event schemas should not own the implementation details for legacy compatibility projections. Isolating that code makes the boundary explicit and keeps follow-up canonical lifecycle work easier to review.
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