[Fix] Nested subtask tool calls no longer stall - #1494
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Check strict typing and exhaustive behavior across normal, boundary, error, cancellation, retry, and compatibility paths.⚙️ CodeRabbit configuration file Files:
Verify extension/webview contracts, cancellation and error propagation, VS Code lifecycle correctness, and behavior under retries and partial failure.⚙️ CodeRabbit configuration file Files:
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Add focused tests for UI binding and save behavior, persistence or normalization, and the value returned by `getStateToPostToWebview()`, including true and false/unset cases when defaults could hide omissions.📄 CodeRabbit inference engine (AGENTS.md) Files:
Fix lint violations in new TypeScript code instead of suppressing them.📄 CodeRabbit inference engine (AGENTS.md) Files:
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📝 SummarySummary by CodeRabbit
Walkthrough
ChangesProvider handoff refinement
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to Nested delegation prepares child profiles without exposing an empty task state or mutating the root task. No current merge-blocking risk remains. Sequence Diagram(s)sequenceDiagram
participant ClineProvider
participant ProviderProfile
participant ChildTask
participant TaskPersistence
ClineProvider->>ProviderProfile: resolve profile and prepare pending handoff
ProviderProfile-->>ClineProvider: apply context without intermediate webview state
ClineProvider->>ChildTask: create child with requested mode
ClineProvider->>TaskPersistence: persist one atomic delegation commit
TaskPersistence-->>ClineProvider: return delegated child
ClineProvider->>ChildTask: start child and publish final state
Suggested reviewers: 🚥 Pre-merge checks | ✅ 5 | ❌ 2❌ Failed checks (2 warnings)
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Full details: Description checkExplanation The description explains what changed, why it changed, and the expected impact. It does not follow the repository template because it omits the linked approved issue, detailed test procedure, checklist, documentation impact, and reviewer contact information. Resolution Complete the required template sections. Add an approved issue number after "Closes:", provide reproducible test steps and environment details, complete the pre-submission checklist, state the documentation impact, and provide the requested contact information. Full details: Docstring CoverageExplanation Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 15 functions across 6 files. (3 skipped: 3 unsupported.) Full details: Regression EvidenceExplanation Focused coverage is present for the changed handoff behavior. Full details: Trust And Persistence InvariantsExplanation PASS. No changed path meets the stated failure conditions. The new handoff policy contains only static control values and does not handle secrets or PII. The delegation caller validates the mode before handoff and requests tool approval before delegation. Changed provider-profile and mode persistence calls are awaited, and parent delegation remains behind awaited atomicReadAndUpdate. No new resource allocation or untracked lifecycle handle was introduced.
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Inline comments:
In `@src/core/webview/ClineProvider.ts`:
- Line 3907: Update the handleModeSwitch call to pass mode directly, removing
the unnecessary any type assertion while preserving the existing arguments and
preparePendingTask option.
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For persisted settings, verify the complete schema/storage/runtime/webview round trip, shared default semantics, and focused true plus false/unset tests.
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Add focused tests for UI binding and save behavior, persistence or normalization, and the value returned by `getStateToPostToWebview()`, including true and false/unset cases when defaults could hide omissions.
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src/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.tssrc/__tests__/provider-delegation.spec.ts
Fix lint violations in new TypeScript code instead of suppressing them.
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src/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.tssrc/__tests__/provider-delegation.spec.tssrc/core/webview/ClineProvider.ts
After editing a file, run ESLint with pruning and zero warnings for that relative file, and confirm its suppression count did not increase.
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src/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.tssrc/__tests__/provider-delegation.spec.tssrc/core/webview/ClineProvider.ts
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PR #1494 is now rebased linearly onto latest The prior red Local validation passed: focused Vitest 38/38; mutation harness unit tests 27/27; canonical lifecycle checks (53 lifecycle, 42 provider-handoff, 625 shared-store states); typecheck/lint 11/11 tasks; full |
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What changed
Why this change was made
Nested
new_taskcalls could briefly return Zoo Code to the main screen and race the child task's first chat or approval state. This made a valid tool call appear to be ignored, especially when delegation occurred from inside another subtask.Impact
Nested subtasks now transition directly into the child chat without an intermediate empty-state reload or overwriting the exposed root task's mode, while retaining the requested mode and provider profile. The canonical lifecycle model check now prevents regressions in the concrete provider handoff policy as well as the persisted lifecycle transition.