fix(agent): focus automatic compression on recent user turns#38155
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konsisumer wants to merge 1 commit into
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fix(agent): focus automatic compression on recent user turns#38155konsisumer wants to merge 1 commit into
konsisumer wants to merge 1 commit into
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alaamohanad169-ship-it
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Jun 3, 2026
alaamohanad169-ship-it
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Nice approach — auto-deriving focus from recent user turns instead of requiring explicit /compress focus is a solid DX improvement. Particularly useful for terminal-heavy workflows where most of the session is tool output but the active task is usually captured in the last 2-3 user messages.
The 260/700/3 constants seem like sensible defaults for catching the active task without pulling in stale context. If the user runs long complex sessions they can increase them.
One nit: the tail_start parameter is reserved but unused — consider removing it from the signature since compress() already has the boundary knowledge.
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What does this PR do?
Automatic context compression now derives a compact focus hint from the latest real user turns when no manual focus topic is supplied. That hint is passed into the existing summary prompt so iterative compactions preserve the current task/topic more strongly and demote stale completed topics.
Related Issue
Fixes #9631
Addressing maintainer feedback
#10088 - maintainer-referenced partial mitigation/template work. The current branch already contains the described template improvements (
Completed Actions,Active State, and stronger iterative-summary instructions); this PR builds on that by adding the missing automatic focus derivation path for ordinary auto-compactions.Type of Change
Changes Made
agent/context_compressor.py: derives an automaticRecent user focushint from the latest real user turns, skips persisted summary handoff messages, redacts sensitive text, and passes the hint into summary generation when no explicit focus topic is provided.tests/agent/test_compress_focus.py: updates default-focus expectations and covers skipping stale context-summary handoff content.How to Test
pytest tests/agent/test_compress_focus.py -q- passes (5 passed).pytest tests/agent/test_context_compressor_summary_continuity.py -q- passes (3 passed).ruff check agent/context_compressor.py tests/agent/test_compress_focus.py- passes.python scripts/check-windows-footguns.py agent/context_compressor.py tests/agent/test_compress_focus.py- passes.git diff --check- passes.scripts/run_tests.sh- ran the broad suite, but exited non-zero locally with unrelated sandbox/environment failures across other modules (27375 passed,781 failed). Representative failures include restricted socket binds, denied writes under~/.hermes, live-system guard blocks around process-signal tests, and optional SDK import timeouts.Checklist
scripts/check-windows-footguns.pypassed for changed files)Screenshots / Logs
N/A - agent compression behavior change only.