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ApprovabilityVerdict: Not approved Macroscope's review found this PR not approvable — This cross-layer change persists provider failure details in thread state and exposes them through client shells and MCP, while CLI-backed providers can place raw stderr/stdout in those details. The persistence and potential sensitive-data exposure require human review. Notes:
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Thread transfer impact✅ Thread transfer remains within every enforced ceiling.
Baseline: Scenario and decoded snapshot size10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.
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ChatGPT Codex Connector
| /** The provider's reason when text generation failed, or a fixed message for anything else. */ | ||
| const titleGenerationFailureMessage = (cause: Cause.Cause<unknown>): string => { | ||
| const error = Cause.squash(cause); | ||
| const detail = isTextGenerationError(error) ? error.detail.trim() : ""; |
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TextGenerationError.detail can contain unbounded raw Codex/Claude CLI stderr or stdout. Persisting it as titleRegenerationFailure sends command output (potentially credentials or other sensitive data) to clients and MCP. Could you map these failures to a bounded, safe category/message at the provider boundary and keep the original output only in cause, rather than forwarding detail here?
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I kept the reason on purpose, and I'm leaving this open for a maintainer. Clients already get this same TextGenerationError detail, raw CLI stderr included: it's part of GitManagerServiceError, which the git RPCs return (rpc.ts:1283), so a failed commit message already shows it. This PR saves it on the thread, capped at 500 characters, so it reaches the same environment's paired clients and agents. Those are the owner's own devices and agents on their own machine. Replacing it with a fixed category would hide the one thing the user needs, like 'not logged in' or 'model not found'. If you'd rather scrub it, the cap sits in one place in ThreadTitleRegenerationService.
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The cap bounds size but not sensitivity. The existing RPC exposure is transient; this change persists raw CLI output in the thread projection and exposes it later through clients and MCP. The convention explicitly requires keeping CLI output only in cause and persisting a normalized safe category/message, so I’m keeping this open for maintainer review.
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Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughTitle-regeneration failures now include a request ID and message in thread state. Web and mobile clients monitor for matching failures and report them. ChangesTitle regeneration failure reporting
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix · Severity of issue fixed: Low Merge Risk: ⚪ Minimal · up to The selected title-failure reporting changes are mergeable after normal checks. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
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Review comments at
@apps/server/src/orchestration-v2/ThreadTitleRegenerationService.ts:
- Line 38: Update the failure-reason truncation in
ThreadTitleRegenerationService so the ellipsis counts toward the 500-character
persisted limit by reserving one character before appending it. Update the
corresponding length assertion in ThreadTitleRegenerationService.test.ts to
verify the 500-character cap.
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apps/mobile/src/features/home/useThreadListActions.tsapps/server/src/orchestration-v2/ThreadTitleRegenerationService.test.tsapps/server/src/orchestration-v2/ThreadTitleRegenerationService.tsapps/web/src/components/Sidebar.tsxapps/web/src/hooks/useThreadActionMenu.tsapps/web/src/lib/titleRegenerationFailures.tspackages/client-runtime/src/state/titleRegeneration.test.tspackages/client-runtime/src/state/titleRegeneration.ts
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When the text generation provider failed, "Regenerate title" showed a spinner, the spinner went away, and nothing explained why the title did not change. The server only logged the error. The thread now records the failed request and the provider's reason, the same way rollback failures are recorded. The client that asked for the regeneration waits for its request and shows the existing error toast on web and an alert on mobile. MCP thread reads include the failure for agents. Refs #5359 Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A bulk regeneration started its watchers after the whole batch was sent, so a request that had already succeeded waited out its timeout and held back the toast for one that failed. Each request is now watched before its command is sent, rejected commands stop their watcher, and failures update one counting toast as they arrive. Mobile watches before sending too. The persisted failure reason is capped at 500 characters, since CLI output can be long. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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…hread menu tests Both tests are new on main and mock react and Expo, so the watcher's real imports can't load there. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Problem
When the text generation provider fails, "Regenerate title" shows a spinner, the spinner goes away, and the title stays the same. Nothing says why. The web client already has a "Failed to regenerate thread title" toast, but it only fires when the server rejects the command. Generation runs later in the background, and V2's
ThreadTitleRegenerationServiceonly logs the error.This replaces #11162, which fixed the same problem in the V1 reactor and was closed for the V2 rewrite.
To reproduce on main, point text generation at a Codex instance whose CLI fails, then choose "Regenerate title" on a thread with messages. The server logs
Thread title generation failedand the UI shows nothing.Change
titleRegenerationFailure, following the existingrollbackFailurepattern. The next regeneration clears it. ATextGenerationErrorpasses itsdetail, capped at 500 characters. Clients already receive that samedetailwhen commit-message generation fails. Any other error gets a fixed message, so internal errors don't reach clients.waitForTitleRegenerationFailurein client-runtime waits for one request to settle on the thread shell. Callers start it before sending the command and abort it if the command is rejected, so a request that settles quickly is still seen. The web sidebar menu, the bulk sidebar action, and the chat header menu use it to show the existing error toast. A bulk regeneration updates one toast that counts failures. Mobile shows its existing "Could not regenerate title" alert.t3_thread_readincludes the failure, so agents can see it too.Automatic first-message titles record their failure the same way, but no client shows it yet because nothing waits on that request. Branch-name generation in
ThreadLaunchServicehas the same silent path. Its comment says keeping the temporary name is intended, so this PR leaves it alone.Scope and approval
This fixes part of #5359, which is open and triaged. Theo's comment names the remaining gap: "the generators still log the failure instead of surfacing it". This PR covers the regenerate-title case. It doesn't close #5359 because first-message titles and branch names still fail silently.
Refs #5359
Replaces #11162
Verification
apps/server/src/orchestration-v2/ThreadTitleRegenerationService.test.tsrun against main's server and contract source fails 4 of 17 tests because no failure is recorded. With this change all 17 pass. They cover a provider error, a defect (fixed message), a capped long reason, exhausted first-message retries, and clearing on the next regeneration.packages/client-runtime/src/state/titleRegeneration.test.tspasses 7 of 7. It covers a failure, a failure that settles before the in-flight marker reaches the client, success after the watcher starts, a failure for a different request, a deleted thread, and an aborted watcher.OrchestratorMcpService,ThreadMetadataMcpService,ProjectionStore, and the contract test suites pass.tsc --noEmitpasses for contracts, client-runtime, server, web, and mobile. Lint is clean on the changed lines.codexCLI that answers its version probe and fails generation with an auth error. On main, "Regenerate title" changes nothing on screen. With this change, the toast shows the provider's reason. I checked the sidebar context menu, the chat header menu, and the bulk action on two selected threads, which showed one toast reading "Failed to regenerate 2 thread titles" with the reason.Single thread. Before, on main, the failure only reaches the server log and nothing appears on screen. After, the toast shows the provider's reason.
Bulk "Regenerate titles (2)". Main shows nothing for either failure. After, one toast counts them.
The action used:
Not checked: the mobile alert on a device. It uses the shared helper covered by the client-runtime tests.
Claude Opus 5.5 via Claude Code.
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