[ThomasK33]

Summary

This PR closes the PR 12 (#7404) journal follow-ups of #7326 and mirrors #7485's createParentDir option in the foreign-holder test layer. It is stacked on PR B. App behavior does not change: in the app, the history's file and lock layers are the same objects as the Node layers, so every call still gets the same shared journal instance.

The skill tools write their refinement rows through the tool config's layers. RefineService reads its seq baseline and its staged rows through its history's layers. The skill-write config of RefineService now carries the history's session files. A test graph on memory layers therefore writes and reads one journal, the one that aiService.durableEventJournalFor uses.

Refs #7326

Items

#7326 item	Result
PR 12 advisor: appendRefinementEvent writers of sharedDurableEventJournal (the skill tools)	Done. RefinementEmitArgs gets layers, and appendRefinementEventFromTool passes the tool config's sessionFiles and sessionLocks. The sessionLocks field became required in PR B.
PR 12 advisor: refineService.ts:1245 reads the shared journal	Done. readMaxJournalSeq and listStagedRefinementRows both read through journalLayers(), which returns the history's files and locks. listRefinements takes optional layers for this caller, so the baseline and the staged rows come from one journal. The skill-write config of RefineService sets sessionFiles: this.historyService.files, so its rows go to that same journal.
PR 12 advisor: aiService.durableEventJournalFor	Already done on main: it passes historyService.files and historyService.locks. No code in this PR.
PR 12 advisor: sandboxHostService.journalFor	Reasoned close. SandboxHostService has no history service and no session layers in scope. The tests build it with new SandboxHostService(), so routing it needs a new constructor dependency. One hazard stays, and only in tests: on memory layers, aiService and the sandbox host would get two journal instances, and that split would break seq ordering. No test does that today. I searched every test that uses SessionFilesMemory, SessionLocksMemory or the in-memory loop for the sandbox host. The only match, agentSession.turnStopHooks.test.ts, replays a canned code_execution part and has no sandbox host.
PR 12 advisor: memoryService.ts:2739 (appendRefinementEvent)	Reasoned close. MemoryService has no SessionLocks or SessionFiles in scope. This is the same reason as the PR 13 target-lock callers: a new constructor dependency, and about 46 test constructions.
PR 12 advisor: refinementRollback (rollbackRefinement's journal and its listRefinements)	Reasoned close. rollbackRefinement has opts.locks but no files layer, and the registry needs both. Its two callers (tools/refinement_rollback.ts and cli/debug/refinements.ts) would need a new option through read, validate, apply and append. In the app nothing changes. On memory layers, a rollback would read the Node journal while the skill rows sit in the memory one. No test runs a rollback on memory layers today.
PR 12 advisor: replayVerifySession (replay/replayVerify.ts)	Reasoned close. No history service is in scope. It reads the journal of the session dir that its caller names, with new DurableEventJournal(params.sessionDir).
#7485 option in the test layers	Done. The memory layer already honors createParentDir (#7485). The foreign-holder layer's acquireProcessFileLock now probes the inner lock when createParentDir is false and a fake holder sits on the path. A missing parent then fails with ENOENT, as the Node lock does before it meets any holder. A lock that the probe takes is released at once. The probe asks the inner layer, not the disk, so it also holds on a memory HostFiles volume.

Validation

• The new test "a tool row takes its journal locks from the tool config's session locks" (refinementJournal.test.ts) fails when appendRefinementEventFromTool drops layers.
• The new contract test "foreign: a missing parent wins over a live holder for a file lock without createParentDir" fails without the probe. Its second half (the parent comes back, and the live holder refuses with today's text) fails if the wrapper always hands the call to the inner lock.
• This PR does not change journal.ts, durableEventJournal.ts, blobStore.ts or fileLock.ts.

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-25T17:46:45.857569Z	dd29211	PR opened
🔒 Security Review	✅ Completed 2026-10-25T17:46:53.299649Z	dd29211	PR opened

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[github-actions]

🟢 e2e stories (Haiku): 14 passed

27 agent steps · 7 replayed from cache · 31 model calls · 214.7k tokens (75% cached)
Spend: $0.09 of the $1.00 cap (proxy ledger)

All 14 tests in 9 files

	Test	Agent	Time
🟢	chatRestart.e2e.ts · 1 passed	2 steps · 4 calls	23.4s
🟢	a chat survives a restart of the server	2 steps · 4 calls	23.4s
🟢	compaction.e2e.ts · 1 passed	3 steps · 7 calls	47.4s
🟢	/compact replaces the old chat with a summary	3 steps · 7 calls	47.4s
🟢	pluginTrustRestart.e2e.ts · 1 passed	4 steps · 2 calls	9.7s
🟢	a trusted plugin hook stays trusted after the server restarts	4 steps · 2 calls	9.7s
🟢	settingsRoundTrip.e2e.ts · 1 passed	3 steps · 4 calls	28.6s
🟢	a chat survives trips through Settings	3 steps · 4 calls	28.6s
🟢	sidebarPerWorkspace.e2e.ts · 1 passed	4 steps · 1 call	4.5s
🟢	a new workspace starts with its right sidebar collapsed while another keeps it open	4 steps · 1 call	4.5s
🟢	smoke.e2e.ts · 1 passed	2 steps · 1 call	5.9s
🟢	the agent opens the playground workspace	2 steps · 1 call	5.9s
🟢	streamErrors.e2e.ts · 1 passed	1 step · 1 call	6.9s
🟢	stream errors show in the chat, and the chat recovers	1 step · 1 call	6.9s
🟢	todoNudge.e2e.ts · 1 passed	2 steps · 5 calls	25.0s
🟢	the agent finishes open TODO items after the turn-end nudge	2 steps · 5 calls	25.0s
🟢	touchAlignment.e2e.ts · 6 passed	6 steps · 6 calls	22.6s
🟢	the Settings close button is level with the title on a touch screen 390px wide	1 step · 1 call	3.6s
🟢	the Settings close button is level with the title on a touch screen 768px wide	1 step · 1 call	4.1s
🟢	Backup settings checkboxes are small and level with their labels on a touch phone	1 step · 1 call	4.7s
🟢	the heartbeat checkbox is small and level with its label on a touch phone	1 step · 1 call	3.2s
🟢	a reply's model and time stay on one line on a touch phone	1 step · 1 call	4.3s
🟢	the workspace actions menu stays on the title row on a touch phone	1 step · 1 call	2.6s

_{e2e 0.20.0 · 2m 57s · web · run artifacts}

🟢 e2e Electron stories (Haiku): 3 passed

3 agent steps · 3 model calls · 7.9k tokens (33% cached)
Spend: $0.01 of the $1.00 cap (proxy ledger)

All 3 tests in 3 files

	Test	Agent	Time
🟢	electron/deepLink.e2e.ts · 1 passed	1 step · 1 call	5.2s
🟢	a deep link of a second launch starts a chat in the running app	1 step · 1 call	5.2s
🟢	electron/menuBar.e2e.ts · 1 passed	1 step · 1 call	6.7s
🟢	the workspace menu bar is the desktop title bar	1 step · 1 call	6.7s
🟢	electron/smoke.e2e.ts · 1 passed	1 step · 1 call	5.0s
🟢	Xum Electron opens the playground workspace	1 step · 1 call	5.0s

_{e2e 0.20.0 · 18.8s · electron · run artifacts}

🟢 e2e agent repros (Haiku): no tests selected

Spend: $0.00 of the $1.00 cap (proxy ledger)

_{e2e 0.20.0 · 5.3s · 2 targets (web, phone) · run artifacts}