Yichen Jiang e6bd6cc9be fix(compact): count the logged session prefix toward token pressure ...

ds-review-bot critical: compactIfNeeded estimated pressure from the
derived history + system prompt only, but every loop-built request also
carries EpochHeader.messagePrefix in front of the history — a
deployment at the window edge would under-estimate by exactly the
prefix, skip compaction, and ship an over-window request.

BasicCompactService now gates on estimatePressure(): the session prefix
read from the log's folded header + the derived history + the system
prompt. The fold is exact from the instance's second request on (and
from a resumed instance's first — the previous instance logged its
prefix); it is absent only before a fresh session's first request,
where the history is a single prompt and compaction is moot. Compaction
itself still shrinks history only — a prefix that alone approaches the
window is a configuration error no compactor fixes, same as the
documented single-unit-overflow stance.

2026-07-08 19:32:42 +08:00

..

compact-basic.spec.ts

fix(compact): count the logged session prefix toward token pressure

2026-07-08 19:32:42 +08:00

compact-loop-repro.spec.ts

compact: the summary's provenance records its call envelope

2026-07-06 03:21:29 +08:00