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oh-my-pi/packages/coding-agent/test
Wolfgang Schoenberger 6a55205b68 fix(coding-agent): stop auto-compaction thrash when a single turn exceeds the threshold
prepareCompaction keeps the most-recent turn verbatim (findCutPoint never
cuts at tool results), so when that single turn already exceeds the
compaction threshold the rewritten context stays above threshold. The
context-full / snapcompact auto-compaction success tail scheduled the
agent-authored auto-continue (and the overflow/incomplete retry)
unconditionally, so the next agent_end re-entered #checkCompaction over
the same oversized tail and re-fired forever.

This is the residual loop left after #3247 capped snapcompact's own frame
projection: once #computeSnapcompactMaxFrames drops the frame cap below
one frame, snapcompact is skipped and the context-full summarizer path
still creates no headroom, so the loop persists on that path.

- #runAutoCompaction now gates the continuation and the overflow/
  incomplete retry on a post-maintenance headroom check
  (#compactionCreatedHeadroom), reusing the shake recovery-band
  hysteresis from #2275 (consolidated as the shared
  COMPACTION_RECOVERY_BAND). When a pass frees too little it pauses
  automatic maintenance and emits a single warning instead of looping.
- The post-turn threshold check ignores an assistant's stale
  pre-compaction usage so the scheduled auto-continue can't re-trip on
  the kept assistant's old high token count.

Adds a regression test covering the no-headroom (pause + warn, no
continuation) and headroom (auto-continue, no warn) paths; both
assertions are mutation-verified against the guard.

(cherry picked from commit 6fcbbe2b3075827ee621acaee8efa2c586eedd3e)
2026-06-26 23:42:50 +02:00
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