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## Why Remote compaction v2 sends a normal `/responses` request with a compaction trigger. It should follow the retry semantics used by normal Responses streaming calls for transient stream/request failures, while keeping a smaller per-transport retry budget because compact attempts can run much longer than normal turns. ## What changed - Add a v2 compaction retry loop that uses `stream_max_retries`, matching normal Responses turn retry mechanics. - Cap the compact v2 retry budget at 2 retries per transport with `min(stream_max_retries, 2)`. - Retry retryable request-open and post-open stream collection failures through the same loop. - Use the existing 200ms exponential backoff and requested retry delay handling used by normal turn retries. - Emit the same `Reconnecting... n/max` stream-error notification pattern. - Fall back from WebSockets to HTTPS after the compact v2 stream retry budget is exhausted, then reset the retry counter for HTTPS. - Keep final remote-compaction failure logging after retries/fallback are exhausted. - Treat compact stream EOF before `response.completed` as a retryable stream failure. - Add compact v2 regression coverage with `request_max_retries = 0` and `stream_max_retries = 2`, covering both request-open failure and opened-stream EOF in one end-to-end test. ## Tests - `just fmt` - `cargo test -p codex-core remote_compact_v2` - `just fix -p codex-core`