fix(task): check abort before an ask row posts (RSK-20) by edelauna · Pull Request #1895 · Zoo-Code-Org/Zoo-Code

edelauna · 2026-10-03T00:57:37Z

Related GitHub Issue

Closes: #1803

Description

Task#ask checked abort only at entry. It then waited for getState and checkAutoApproval. An abort in that window added an ask row that no one could answer, and then the ask threw. This is race R-3 (requirement PR-8).

How the fix works:

Task#ask checks abort again after the last wait and before any branch sets lastMessageTs. No wait sits between this check and any lastMessageTs assignment, so one check covers the new-partial, update-partial, complete-partial and new-complete branches.
On abort, the check releases the queued message that this ask claimed. It then throws the same error as the entry check.
The RSK-05 exit criterion in task-lifecycle-run-state-kernel-tickets.md named R-3. After this fix, nobody can force an R-3 window. The criterion now says "a known race that still has an open fix ticket". This also stays true when RSK-17 and RSK-19 fix R-1 and R-4.

For reviewers: the "R-3 leaves the ignore list" exit criterion has no code to change. The ignore list belongs to the RSK-05 consistency check, which is not built yet.

Test Procedure

src/core/task/__tests__/ask-abort-race.spec.ts sets abort while getState is pending. It covers these cases:

No ask row is added, for partial set to false, undefined and true.
An existing partial row stays unchanged on a partial update and on a partial completion. saveClineMessages and updateClineMessage are not called.
The claimed queued message goes back to the queue.

All cases fail on the code before the fix.

To run the tests:

Run cd src && pnpm exec vitest run core/task/__tests__/ask-abort-race.spec.ts.
Run the neighbouring suites ask-queued-message-drain, ask-clear-approval-buttons and ask-allowlist-cwd in the same directory.

I did not run the full pnpm test.

Pre-Submission Checklist

Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
Scope: My changes are focused on the linked issue (one major feature/fix per PR).
Self-Review: I have performed a thorough self-review of my code.
Testing: New and/or updated tests have been added to cover my changes (if applicable).
Visual Snapshot (UI changes only): If a user would notice this change at a glance (layout, theme tokens, brand elements, empty/error states), I've added or updated a *.visual.tsx snapshot in webview-ui/. See webview-ui/AGENTS.md → "When a UI change needs a snapshot". (Not applicable: no UI change.)
Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Documentation Updates

No user-facing documentation updates are required. One architecture doc line changed (see Description).

Additional Notes

Epic: #1790. Ticket: RSK-20.

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src/core/task/Task.ts
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Check persistence and lifecycle invariants: awaited atomic writes, rollback or explicit partial-failure behavior, cross-window state consistency, stale listeners/watchers, cancellation, idempotency, and safe restart/resume without lost or d...

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🪛 GitHub Check: mutation-diff

src/core/task/Task.ts

[warning] 1576-1576: Mutation test advisory
src/core/task/Task.ts:1576: NoCoverage StringLiteral mutant (replacement: ``). See the job summary for the complete list and resolution guidance.

🔇 Additional comments (2)

src/core/task/Task.ts (1)

1545-1545: LGTM!

Also applies to: 1576-1576

src/core/task/__tests__/ask-abort-race.spec.ts (1)

55-71: LGTM!

📝 Summary

Summary by CodeRabbit

Bug Fixes
- Aborting an ask while provider state or auto-approval is loading now stops the ask before it is added or posted.
- Queued messages claimed during an aborted ask are released for reuse.
- If an ask is aborted while updating or completing an existing partial message, that message remains unchanged and is not saved or updated.
Tests
- Added coverage for aborts during auto-approval, including checks that existing messages and ask state remain unchanged.

Walkthrough

Task.ask now checks for an abort after awaiting provider state and auto-approval. If aborted, it releases a claimed queued message and throws before adding or posting an ask. Tests cover ask and partial-message outcomes.

Changes

Abort before ask posting

Layer / File(s)	Summary
Abort guard and regression coverage `docs/architecture/task-lifecycle-run-state-kernel-tickets.md`, `src/core/task/Task.ts`, `src/core/task/__tests__/ask-abort-race.spec.ts`	The ticket criterion now covers known races with open fix tickets. `Task.ask` checks for an abort after awaited state checks and releases a claimed queued message before throwing. Tests verify that aborts do not add an ask row, alter an existing partial message, or change `lastMessageTs`, and that a claimed queued message becomes available again.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix · Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to c1a90

An abort during the awaited checks now stops the ask before it is added or updated and makes claimed feedback available again. No unresolved material risk in the changed scope is indicated.

Security Architecture Review

Security architecture risk: ⚪ Minimal · up to c1a90

The change tightens cancellation handling and preserves queued feedback for another attempt. It does not expand access, privileges, or approval authority.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

inferred — The changed operation affects the current task instance's ask state and, when present, one claimed feedback message. It adds no execution sink or broader asset authority; downstream command, file, and MCP approval decisions remain with the existing policy.

Trust Boundaries and Controls

observed — Request text continues through existing approval-policy checks. Protected commands require an ask, MCP tool approval depends on configured permissions, and file approval retains task-workspace and protected-write checks. The cancellation guard neither changes these decisions nor introduces a new caller boundary.

Resilience and Maintainability Implications

observed — The improvement is limited to cancellation observed after preliminary awaits. Later abort and supersession paths retain their existing claim-release handling. The added guard is not a transaction boundary for subsequent persistence failures or cancellation after row mutation begins.

🚥 Pre-merge checks | ✅ 8

✅ Passed checks (8 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	`#1803` requires `Task.ask` to avoid posting an ask row after an abort, release a claimed queued message, throw the entry-check error, and test an abort during `checkAutoApproval`. `Task.ts` rechecks `t…
Out of Scope Changes check	✅ Passed	The changed `Task.ask` logic and regression tests implement `#1803`. The ticket-plan edit replaces the R-3-specific RSK-05 exit criterion with a criterion for known races that still have open fix ticket…
Regression Evidence	✅ Passed	Focused coverage exercises the new abort guard in `Task.ask` during both `getState` and `checkAutoApproval` waits. The tests cover `partial` values `true`, `false`, and `undefined`, protect existing p…
Security Boundaries	✅ Passed	The changed path in `src/core/task/Task.ts` only rechecks `abort`, releases a claimed queued message, and throws before creating or updating an ask row. It does not expose secrets or PII, execute inpu…
Persistence Integrity	✅ Passed	No changed persistence path introduces the stated failure conditions. The `Task.ask` diff adds an abort guard before the existing ask-row branches. It releases a queued-message claim and throws when a…
Lifecycle Resource Cleanup	✅ Passed	No changed lifecycle path can leak a resource or duplicate work. `Task.ask` now checks `abort` after `getState` and `checkAutoApproval`; if aborted, it releases the claimed queue message and throws be…
Title check	✅ Passed	The title clearly summarizes the main change: checking for an abort before `Task#ask` posts an ask row.
Description check	✅ Passed	The description includes the linked issue, implementation details, test procedure, and documentation impact. The self-review and contribution-guideline checklist items remain unchecked, but the descri…

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github-actions · 2026-10-03T00:57:47Z

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codecov · 2026-10-03T01:05:30Z

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Inline comments:
Review comments at @src/core/task/__tests__/ask-abort-race.spec.ts:
- Around line 34-42: Extend the abort-race coverage around task.ask to hold
checkAutoApproval’s result pending, set abort after that helper starts, then
resolve it; assert ask rejects and does not add or change an ask row.

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Check persistence and lifecycle invariants: awaited atomic writes, rollback or explicit partial-failure behavior, cross-window state consistency, stale listeners/watchers, cancellation, idempotency, and safe restart/resume without lost or d...

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Require regression coverage at the lowest valid harness with behavior-focused assertions, including relevant negative, error, false/unset, and boundary cases.

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src/core/task/__tests__/ask-abort-race.spec.ts

Check strict typing and exhaustive behavior across normal, boundary, error, cancellation, retry, and compatibility paths.

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Files:

src/core/task/Task.ts
src/core/task/__tests__/ask-abort-race.spec.ts

Verify extension/webview contracts, cancellation and error propagation, VS Code lifecycle correctness, and behavior under retries and partial failure.

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🪛 GitHub Check: mutation-diff

src/core/task/Task.ts

[warning] 1545-1545: Mutation test advisory
src/core/task/Task.ts:1545: NoCoverage StringLiteral mutant (replacement: ``). See the job summary for the complete list and resolution guidance.

[warning] 1576-1576: Mutation test advisory
src/core/task/Task.ts:1576: NoCoverage StringLiteral mutant (replacement: ``). See the job summary for the complete list and resolution guidance.

[warning] 1574-1574: Mutation test advisory
src/core/task/Task.ts:1574: NoCoverage CallExpression mutant (replacement: ;). See the job summary for the complete list and resolution guidance.

[warning] 1573-1573: Mutation test advisory
src/core/task/Task.ts:1573: 2 mutation test gaps; example: NoCoverage ConditionalExpression mutant (replacement: true). See the job summary for the complete list and resolution guidance.

[warning] 1572-1572: Mutation test advisory
src/core/task/Task.ts:1572: Survived ConditionalExpression mutant (replacement: false). See the job summary for the complete list and resolution guidance.

edelauna requested review from JamesRobert20, navedmerchant and taltas as code owners October 3, 2026 00:57

edelauna changed the title ~~fix(task): check abort before an ask row posts~~ fix(task): check abort before an ask row posts (RSK-20) Oct 3, 2026

fix(task): check abort before an ask row posts

352b8e2

edelauna force-pushed the issue/1803 branch from f89f8aa to 352b8e2 Compare October 3, 2026 00:59

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fix(task): restore ask abort prefix and cover abort during auto-approval

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fix(task): check abort before an ask row posts (RSK-20) - #1895

fix(task): check abort before an ask row posts (RSK-20)#1895
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