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fix(compaction): drop thinking blocks from the live tail - #1320
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TheGreatAxios merged 1 commit intoOct 5, 2026
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Uncapped thinking on the newest pair was pinning post-fold occupancy near 45%. The live copy drops thinking and redacted_thinking; the archive keeps the full bodies. Thinking-only turns become the existing omitted marker so adapters do not 400 on empty content.
TheGreatAxios
enabled auto-merge
October 5, 2026 01:47
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Summary
thinkingandredacted_thinkingblocks so uncapped newest-pair thinking cannot pin post-fold occupancy near 45%. Full thinking stays in the archived transcript.[thinking-only turn omitted]marker so adapters do not 400 on empty content. Newest tool-call/result pairs still stay for resume.live_tokens(post-fold live-turn token estimate). Tail budget stays 2500.On a 40k-token thinking fixture: origin/main kept 40,144 live tokens with thinking; this branch folds to 2,375 live tokens (under 10% of 128k).
Verification
bun test src/context-compactor.test.ts src/session/compactor-pairing.test.ts— 45 passbun test ./evals/compaction/metrics.test.ts ./e2e/compaction-baseline.test.tspassFixes CL-9899
Replaces #1316 (closed when its base branch was deleted on merge of #1315).