Keep Codex gpt-5.5 compaction banner out of gateway chats#3
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…ex OAuth (NousResearch#40957) The ChatGPT Codex OAuth backend hard-caps gpt-5.5 at a 272K context window (verified live: a ~330K-token request to chatgpt.com/backend-api/codex/responses is rejected with context_length_exceeded while ~250K succeeds; the same slug exposes 1.05M on the direct OpenAI API / OpenRouter and 400K on Copilot). At the default 50% trigger, auto-compaction fires at ~136K — half the usable window. Raise the trigger to 85% (~231K) on this exact route only, gated by a new compression.codex_gpt55_autoraise config flag (default true). When it fires, emit a one-time notice (CLI inline print + gateway status_callback replay) with the exact opt-back-out command. gpt-5.5 on any other provider keeps the user's global threshold. - _is_codex_gpt55() matches the 5.5 family only on provider=openai-codex - _compression_threshold_for_model() now provider-aware + opt-out param - config key + _config_version bump (27->28) for backfill - docs + tests (40 cases in test_arcee_trinity_overrides.py)
🔎 Lint report:
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| Rule | Count |
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unresolved-attribute |
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First entries
tests/agent/test_codex_gpt55_autoraise_notice.py:34: [unresolved-attribute] unresolved-attribute: Object of type `AIAgent` has no attribute `_compression_warning`
tests/agent/test_codex_gpt55_autoraise_notice.py:33: [unresolved-attribute] unresolved-attribute: Object of type `AIAgent` has no attribute `context_compressor`
✅ Fixed issues: none
Unchanged: 4937 pre-existing issues carried over.
Diagnostics are surfaced as warnings — this check never fails the build.
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