Preserve include=reasoning.encrypted_content, cache reasoning+assistant message
for store:false multi-turn, and accept Grok thinking signatures on Claude→Codex
for grok targets.
Harden replay cache: blob-level reasoning filter, never double-inject assistant
when history has a last message, isolate session keys by downstream API key,
clear cache on non-replayable completed turns, and normalize refusal parts.
041816c2fd