## Summary
- increase `DEFAULT_READ_TIMEOUT` in `codex_message_processor_flow` from
20s to 45s
- keep test behavior the same while avoiding platform timing flakes
## Why
Windows ARM64 CI showed these tests taking about 24s before
`task_complete`, which could fail early and produce wiremock
request-count mismatches.
## Testing
- just fmt
- cargo test -p codex-app-server codex_message_processor_flow --
--nocapture