Agent background review transcript isolation fixes
Cluster 100795. Data as of
Nothing open on GitHub. Fix merged in #101074 on 2 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 4 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #101074. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #101074. That is separate from the fix event. - Still open
- Nothing open on GitHub.
A cluster of bug fixes addressing how the agent handles transcript and wire-byte state during background review forks, preventing payload divergence that degraded cache prefix hit rates after agent close or review cycles.
Open issues0
Open PRs0
Fixes on record
-
#101074 fix(agent): background review fork gets a structural transcript clone, not a shallow list (salvage #100802)
files:
agent/turn_finalizer.py,run_agent.py,tests/agent/test_refine_snapshot_isolation.py,tests/run_agent/test_background_review.py
2 PRs closed without merging
From the close comments: done elsewhere 1 · merged via another change 1
Closed issues · 1
- Closed#100795[Bug]: State-rebuild payload divergence — after agent close / background review, the next user turn's API request no longer matches the cached prefix (0–85% hit for one shot)
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.50: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
Pick up a Lab task
Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.
Open the LabAt a glance
- Merged PRs
- #101074
- Closed issues
- 1
- Attempts
- 2 PRs closed without merging
- Fix link checked
- 2 Sep 2026