codex-live rejection-flow oracle accepts the current multi_agent_v2 spawn-evidence family (lane red on unchanged main)

[clkao]

Stabilize Codex live rejection-flow CI under multi_agent_v2 evidence drift.

What changed

• Accept durable validation-stage evidence when spawn events are absent.
• Preserve inline and narration-only negative fixtures.
• Cover keep-moving and reviewer-reuse retry scenarios.

Evidence

• Validation: focused 39/39, full 2043/2043, race 2043/2043.
• Live Codex rejection-flow smoke passed; combined pre-PR check passed 832/832.

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3v

[github-actions]

Journey cost delta

Scenario	Runtime	Model	Turns Δ	Cache Read Δ	Cache Creation Δ	Tokens Δ (total)	Cost Δ (USD)	Duration Δ (ms)	Baseline
feedback-3-cycle-escalation	claude	claude-opus-4-8	-1	-31292	-1170	-34076	-0.0633	-9455	latest published
feedback-3-cycle-escalation	claude	sonnet	-9	-402460	-4674	-405546	-0.1702	-57982	latest published
filing	claude	claude-opus-4-8	-3	-100141	-967	-102043	-0.0768	-5002	latest published
filing	claude	sonnet	+2	+93698	+1050	+99845	+0.0508	-16837	latest published
gate-guardrail	claude	claude-opus-4-8	+0	+6524	+1397	+8034	+0.0122	-5226	latest published
gate-guardrail	claude	sonnet	+0	+15098	+2539	+23143	+0.0407	+1009	latest published
keep-moving-posture	claude	claude-opus-4-8	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	none (new observation)
keep-moving-posture	claude	sonnet	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	none (new observation)
merge-hook-guardrail	claude	claude-opus-4-8	-1	-35137	-668	-37289	-0.0562	-16872	latest published
merge-hook-guardrail	claude	sonnet	-3	-113842	-1271	-111370	-0.0369	-17657	latest published
rejection-flow	claude	claude-opus-4-8	-4	-765132	+3947	-777217	-0.7317	-210236	latest published
rejection-flow	claude	sonnet	-7	-714358	+49829	-660233	+0.0247	-113528	latest published
self-evidence-merge-triage	claude	claude-opus-4-8	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	none (new observation)
self-evidence-merge-triage	claude	sonnet	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	none (new observation)
shallow-boot	claude	claude-opus-4-8	-1	-8848	+1532	-6371	+0.0288	+16212	latest published
shallow-boot	claude	sonnet	+0	+5633	+871	+11970	+0.0293	-2809	latest published
shallow-boot-window	claude	claude-opus-4-8	-1	+1657	-12	+1645	+0.0000	+0	latest published
shallow-boot-window	claude	sonnet	+0	+1076	-92	+984	+0.0000	+0	latest published
smallest-sufficient-mechanism	claude	claude-opus-4-8	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	none (new observation)
smallest-sufficient-mechanism	claude	sonnet	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	n/a (new)	none (new observation)