The Codex image_generation bridge block in Forward injects
tools:[image_generation] and tool_choice:"auto" (since #3498) into every
Codex request, including /responses/compact. The upstream compact endpoint
rejects tool_choice with 400 "Unknown parameter: 'tool_choice'", so every
remote compaction fails once the bridge is enabled. Guard the whole image
generation block with !isCompactRequest.
Fixes#3629
seng1e
c797159bf5