[JacobStephens2]

Summary

Claude / Grok JSONL ─┐
Codex JSONL ─────────┴─ Interpretation::decode → progress + normalized Event[]
                       Interpretation::condense → existing progress

Add model/tool lifecycles, messages, reported usage/cost, errors, denials, killed/interrupted work and sub-agent lifecycles. Keep existing Model evidence, diagnostics, Resume facts and final replies. Codex exposes measured turn totals separately: its exec stream has no per-request boundaries or Model records.

Closes #983

Evidence

• Before: the normalized-event interface was absent; recorded-stream regressions failed. Each supplied behavioral reproducer ran exactly and failed as reported.
  After: the stopped-child and late-denial reproducers each passed after their fixes. Their assertions remain, with descendant isolation, partial-message usage, completed-only Codex items, late input snapshots, error envelopes, terminal metadata, and deduplicated same-call outcome amendments covered.
• /usr/bin/time -p scripts/affected-tests issue-700 selected cargo nextest run: 2,235 passed, 3 skipped, across 52 binaries. Wall time 1,927.55 s (32m 07.55s) including compilation (2m 00s); nextest execution 1,802.105 s. Local timings reflect host load and build cache, not CI queue time.
• The three skips are two existing manual probes (authenticated agy and capture latency), plus the retained, known failing Codex contract regression pending Decide Codex per-request evidence for Session traces #1047. The green suite does not establish that missing requirement.
• cargo check --bin thirdshift, final cargo clippy --all-targets -- -D warnings, and cargo fmt --check passed. CI also passed on the exact pushed head 4d58484.

Test seams

• Each Harness adapter's Interpretation::decode: JSONL to ordered normalized events and existing progress/Model evidence.
• Interpretation::finish and existing integration scenarios: final replies, diagnostics and Resume facts remain compatible.

Review coverage

Independent Standards and Spec reviews against issue-700 (cd7119f): both read all 14 changed paths and their single follow-up covered the six review-fix paths. Both Standards design findings are addressed. Spec findings S2 (stopped child calls) and S3 (late denial metadata) are fixed with their regressions retained.

Remaining coverage gaps: final revisions after those follow-ups were not independently reread in src/harness/interpretation/event.rs, src/harness/interpretation/stream/events.rs, and src/harness/interpretation/event_tests.rs. Those changes received the exact S3 regression and duplicate-metadata coverage plus clippy/format checks. Earlier versions of all three were reviewed. No generated-output exclusions.

Unaddressed findings

Standards

None.

Spec

• S1 / P1 — Codex model-call lifecycle, pending the Spec decision in #1047, labelled only needs-triage with no blocking edge. The exact supplied regression ran one test and failed because no model-call events exist. It is retained with an explicit ignore reason linked to Decide Codex per-request evidence for Session traces #1047. Event::TurnStarted/TurnEnded preserve observed turns separately. The upstream exec schema supplies turn totals and no individual model-request boundaries or Models; a turn can contain multiple requests. This evidence explains the deferral; it does not refute the missing requirement. Choosing another evidence source/transport or amending Spec: Session traces, OTLP JSON Lines in place of Session logs #700/Normalized events from Claude, Grok and Codex #983 belongs to the Day shift. No exception to Normalized events from Claude, Grok and Codex #983 is claimed and no fabricated per-request measurements are emitted.

Merge Danger

Door: two-way

Additive decoder interface; no storage migration or launch-argument change.

Blast Radius: Harnesses

Existing progress/Model evidence, diagnostics, Resume and final-message consumers continue through their current interface. Codex per-request telemetry remains incomplete as disclosed above.

Normalized-event consumers must treat ToolCallEnded { amended: true, .. } as an authoritative outcome update for the same call, preserving its original end time and call count.

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