- Made CompactionSettings.reserveTokens optional so field presence carries provenance; the proportional small-window fallback only applies to genuinely defaulted reserves.
- Clamped the fallback reserve to >= 1 and the derived threshold strictly below the context window.
- Changed the coding-agent settings-schema default from 16384 to unset so Settings.get() no longer materializes a default that masks provenance.
Cherry-pick of the reserve-budget clamp only (resolveBudgetReserveTokens + no-op compaction guard): applies compaction.ts + agent-session.ts + compaction/shake/progress-guard tests. Excludes unrelated Julia prelude timeout and ai/test churn from the PR head.
- Added a last-resort recovery step to run `shake("elide")` on oversized message tails when auto-compaction cannot otherwise free enough context.
- Re-tests the context headroom and auto-continue predicates after a successful rescue before falling back to pausing maintenance.
- Updated the dead-end warning message to suggest running `/shake images` for irreducible, image-only tails.
Drop the persisted assistant error before #runAutoCompaction so the kept region is clean, then re-append it on COMPACTION_CHECK_NONE without a fresh compaction entry — covers no-model, hook-cancel, and compaction-error paths. Same rollback for response.incomplete recovery.
Fixes#3747
Split active-context vs persisted-history removal in #checkCompaction so the persisted assistant error stays on the branch unless context promotion or compaction is actually scheduled.
Fixes#3747
Removed recoverable context-overflow and incomplete-response assistant errors from both active context and persisted session history before compaction/promotion schedules the retry.
Fixes#3747
- Renamed the `find` and `search` tools to `glob` and `grep` respectively across the codebase to improve command clarity.
- Implemented full-stack support for the renamed tools, including CLI arguments, system prompts, SDK exports, and tool registration.
- Added automated migration logic in `settings` to transform legacy `find` and `search` configuration keys to their new equivalents.
- Updated the `collab-web` renderer registry to ensure backwards compatibility with legacy tool outputs.
The post-maintenance headroom guard returned residualTokens < triggerContextTokens
as a secondary check after the recovery-band test. When stale/tool-output pruning
already drove the trigger (postMaintenanceContextTokens) below the band before this
pass, that strict-less comparison made a residual which merely held the line at/under
the band report a false no-progress, suppressing a valid auto-continue and emitting a
spurious warning even though the next turn could no longer re-trip threshold compaction.
The recovery band sits strictly under the compaction threshold, so reaching it already
guarantees the next turn cannot re-trip. Make the band authoritative (residual <= band)
and drop the trigger argument. Adds a regression covering the sub-band trigger case.
(cherry picked from commit 31cf2dc7a30c4134f7a351d61065eca76543f154)
Addresses PR #3412 review (roboomp blocking + codex P2 + Copilot nits):
- The overflow/incomplete retry no longer reuses the COMPACTION_RECOVERY_BAND
hysteresis. Reusing it required residual context below 0.8×threshold, which
turned a recoverable overflow (e.g. 150k on a 200k window, under the ~170k
threshold) into a manual dead-end. Add #compactionCreatedRetryFit, which
measures the rebuilt prompt against the usable fit budget
(contextWindow - effectiveReserveTokens) and is evaluated AFTER the failed
assistant is dropped, so the just-failed turn is excluded.
- The threshold auto-continue keeps the stricter recovery-band check
(#compactionCreatedHeadroom) — that path is the snapcompact thrash guard.
- Split the no-progress warning so each path warns on its own signal.
- Alias errorIsFromBeforeCompaction as assistantPredatesCompaction in the
threshold-usage path for clarity; de-duplicate the rationale comment.
Adds two regression tests (recoverable overflow retries; non-fitting overflow
pauses + warns), mutation-verified against the band-vs-fit split.
(cherry picked from commit f8cf45b2740f04d8776a84521ba563b779d65b25)
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)
can1357