fix(agent): focus automatic compression on recent user turns (salvages #38155)#44687
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…_topic The parameter was reserved-but-unused (del'd immediately); YAGNI. Test call site updated.
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🔎 Lint report:
|
| Rule | Count |
|---|---|
unsupported-operator |
3 |
unresolved-attribute |
1 |
First entries
tests/agent/test_compress_focus.py:145: [unresolved-attribute] unresolved-attribute: Attribute `startswith` is not defined on `None` in union `Unknown | None`
tests/agent/test_compress_focus.py:147: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["- third"]` and `Unknown | None`
tests/agent/test_compress_focus.py:146: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["- second"]` and `Unknown | None`
tests/agent/test_compress_focus.py:148: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["- fourth"]` and `Unknown | None`
✅ Fixed issues: none
Unchanged: 5648 pre-existing issues carried over.
Diagnostics are surfaced as warnings — this check never fails the build.
This was referenced Jun 12, 2026
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Summary
Automatic compaction now derives a focus topic from the last 3 real user turns, so iterative summaries stop keeping completed topics alive and overriding the active one.
Root cause (#9631): the iterative-update prompt says "PRESERVE all existing information", so dead topics accrete across compactions with no recency weighting — only manual
/compress <topic>ever set a focus; automatic compaction passedfocus_topic=None.Closes #9631.
Changes
agent/context_compressor.py:_derive_auto_focus_topic()— last ≤3 real user turns (skips persisted handoff summaries), redacted, 260 chars/turn, 700 chars total; used bycompress()whenever no explicit focus is given — from fix(agent): focus automatic compression on recent user turns #38155 by @konsisumeragent/context_compressor.py: focus-prompt wording no longer claims "the user has requested" when the focus is auto-derivedtail_startparameter (YAGNI)Validation
_is_context_summary_contentpytest test_compress_focus.py + compressor suitesAttribution
Salvages #38155 by @konsisumer — cherry-picked with authorship preserved; rebase-merge to keep per-commit credit. Rebased onto the #44454 prompt consolidation.
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