feat: improve context compaction handoff summaries#1273
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Adapt PR #916 onto current main by replacing the old context summary marker with a clearer handoff wrapper, updating the summarization prompt for resume-oriented summaries, and preserving the current call_llm-based compression path.
This was referenced Mar 14, 2026
Sarge-Reaper
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Mar 24, 2026
Applied Karpathy's autoresearch pattern to autonomously optimize the context compressor. 50 experiments run, 8 improvements kept. - _SUMMARY_RATIO 0.20 → 0.30 (more budget for summaries) - _MIN_SUMMARY_TOKENS 2000 → 500 (no inflation on short conversations) - _MAX_SUMMARY_TOKENS 8000 → 4000 (tighter cap) - _DEFAULT_TAIL_TOKEN_BUDGET 20000 → 8000 (more aggressive compression) - Truncation 3000 → 4500 chars (retains more tool output) - Regex file path pre-extraction with "MUST appear in summary" - Template restructured: Relevant Files + Critical Context moved up - MANDATORY PRESERVATION RULES added to both prompts Addresses NousResearch#705, NousResearch#1273, and context drift from lossy summarization. Score improved 3.6% (0.6346 → 0.6572).
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angelburgosrosado
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Apr 27, 2026
Adapt PR NousResearch#916 onto current main by replacing the old context summary marker with a clearer handoff wrapper, updating the summarization prompt for resume-oriented summaries, and preserving the current call_llm-based compression path.
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May 14, 2026
Adapt PR NousResearch#916 onto current main by replacing the old context summary marker with a clearer handoff wrapper, updating the summarization prompt for resume-oriented summaries, and preserving the current call_llm-based compression path.
olympus-terminal
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May 16, 2026
Adapt PR NousResearch#916 onto current main by replacing the old context summary marker with a clearer handoff wrapper, updating the summarization prompt for resume-oriented summaries, and preserving the current call_llm-based compression path.
Egavasyug
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Jun 10, 2026
Adapt PR NousResearch#916 onto current main by replacing the old context summary marker with a clearer handoff wrapper, updating the summarization prompt for resume-oriented summaries, and preserving the current call_llm-based compression path.
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Summary
Test plan
Refs #916