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feat: recover Codex observed model from the session rollout - #5
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Codex's JSON event stream carries no model field, so codex was the only adapter that never set modelObserved and requested-vs-observed attribution could not be reconciled for it. The effective model is recorded on every turn_context line of the session rollout file, so the adapter now looks the rollout up by thread id (CODEX_HOME-aware, date-partition scan newest-first) and reports the last turn's model. Ephemeral runs persist no rollout, so their attribution stays honestly absent rather than echoing the request - callers who need attribution should run codex with a persistent session. Live-verified: a persistent gpt-5.6-sol run reports modelObserved: gpt-5.6-sol. Unit tests cover the rollout-present and rollout-absent paths; 122 pass / 0 fail. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Codexs JSON event stream carries no model field, so structured Codex results
previously had no
modelObservedat all. This recovers the effective model fromthe session rollout file, which records it on every
turn_contextline (last onewins), resolved under
CODEX_HOMEor~/.codex.Runs that persist no rollout report no observed model rather than echoing the
requested one, keeping attribution honest for independence checks.
Also releases 0.6.2: README + CHANGELOG entries and synchronized version sources.
Verification
bun run check— 122 pass / 4 skip / 0 fail, build, compiled-CLI package testsnpm pack --dry-run,npm run audit:prod— 0 vulnerabilities🤖 Generated with Claude Code
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