Workspace provider isolation - #5

Changed-code mutation testing

Focused tests

• types (cwd packages/types): No mutants were generated; selected test file names were not recorded.
• extension (cwd src): core/task/__tests__/ask-auto-deny.spec.ts, core/webview/__tests__/ClineProvider.spec.ts, core/webview/__tests__/ClineProvider.taskHistory.spec.ts, core/task-persistence/__tests__/TaskHistoryStore.spec.ts, core/task/__tests__/ask-queued-message-drain.spec.ts, __tests__/extension.spec.ts, core/task/__tests__/Task.spec.ts, core/tools/__tests__/executeCommand.spec.ts, core/task/__tests__/Task.persistence.spec.ts, activate/__tests__/registerCommands.spec.ts, core/tools/__tests__/executeCommandTool.spec.ts, core/webview/__tests__/ClineProvider.sticky-mode.spec.ts, core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.ts, core/webview/__tests__/ClineProvider.sticky-profile.spec.ts, __tests__/ClineProvider.history-resume-delegation.spec.ts, core/task/__tests__/Task.dispose.test.ts, core/task/__tests__/ask-clear-approval-buttons.spec.ts, core/task/__tests__/ask-allowlist-cwd.spec.ts, core/context-management/__tests__/context-management.spec.ts, core/task/__tests__/Task.streaming-tool-calls.spec.ts, core/webview/__tests__/ClineProvider.stale-view.spec.ts, __tests__/single-open-invariant.spec.ts, core/task/__tests__/grace-retry-errors.spec.ts, core/task/__tests__/flushPendingToolResultsToHistory.spec.ts, core/webview/__tests__/ClineProvider.lockApiConfig.spec.ts, core/task/__tests__/Task.throttle.test.ts, core/task/__tests__/Task.run-shadow.spec.ts, core/assistant-message/__tests__/presentAssistantMessage-tool-usage-attribution.spec.ts, core/task/__tests__/reasoning-preservation.test.ts, core/assistant-message/__tests__/presentAssistantMessage-custom-tool.spec.ts, __tests__/ClineProvider.delegation.spec.ts, core/webview/__tests__/ClineProvider.flicker-free-cancel.spec.ts, core/webview/__tests__/checkpointRestoreHandler.spec.ts, core/webview/__tests__/webviewMessageHandler.checkpoint.spec.ts, core/task/__tests__/grounding-sources.test.ts, __tests__/ClineProvider.subtask-links.spec.ts, activate/__tests__/registerCodeActions.spec.ts, services/code-index/__tests__/code-index-status-manager.spec.ts, core/assistant-message/__tests__/presentAssistantMessage-unknown-tool.spec.ts, core/task/__tests__/Task.resume-eviction-race.spec.ts, core/task/__tests__/Task.ignored-disabled-tools-notice.spec.ts, extension/__tests__/api-start-task-logging.spec.ts, core/assistant-message/__tests__/presentAssistantMessage-auto-deny.spec.ts, core/task/__tests__/Task.abort-reason-race.spec.ts, __tests__/removeClineFromStack-delegation.spec.ts, extension/__tests__/api-task-conversation-history-length.spec.ts, activate/__tests__/handleUri.spec.ts, core/assistant-message/__tests__/presentAssistantMessage-images.spec.ts, core/assistant-message/__tests__/presentAssistantMessage-tool-repetition.spec.ts, extension/__tests__/api-configuration.spec.ts, extension/__tests__/api-start-new-task.spec.ts, core/task/__tests__/ask-abort-race.spec.ts, core/task/__tests__/Task.pending-action.spec.ts, extension/__tests__/api-has-task-ui-message-text.spec.ts, activate/__tests__/handleTask.spec.ts, __tests__/abandonSubtask.spec.ts, core/context-management/__tests__/truncation.spec.ts, core/assistant-message/__tests__/presentAssistantMessage.spec.ts, extension/__tests__/api-send-message.spec.ts, __tests__/nested-delegation-resume.spec.ts, core/webview/__tests__/ClineProvider.pending-action.spec.ts, extension/__tests__/api-delegation-events.spec.ts, core/task/__tests__/ToolExecutionContext.spec.ts, __tests__/task-run-dispatch.spec.ts, services/code-index/__tests__/code-index-scope.spec.ts, core/task/__tests__/Task.sticky-profile-race.spec.ts, extension/__tests__/api-delete-queued-message.spec.ts, core/webview/__tests__/ClineProviderFactory.spec.ts, __tests__/api-subtask.spec.ts, extension/__tests__/api-theme-fixture.spec.ts, core/task/__tests__/Task.terminal-operation.spec.ts, __tests__/new-task-delegation.spec.ts, test-utils/__tests__/provider.spec.ts, extension/__tests__/api-terminal-profile.spec.ts, core/assistant-message/__tests__/toTelemetryToolName.spec.ts
• webview (cwd .): webview-ui/src/components/settings/__tests__/SettingsView.spec.tsx, webview-ui/src/components/settings/__tests__/SettingsView.displaySave.spec.tsx, webview-ui/src/components/settings/__tests__/SettingsView.unsaved-changes.spec.tsx, webview-ui/src/components/settings/__tests__/ContextManagementSettings.spec.tsx, webview-ui/src/components/settings/__tests__/SettingsView.change-detection.spec.tsx, webview-ui/src/context/__tests__/ExtensionStateContext.spec.tsx

All surviving and uncovered mutants

Warning annotations highlight up to 20 unique locations (maximum 7 per file). This summary lists every advisory mutant.

extension

src/core/task/Task.ts

src/core/webview/ClineProvider.ts

webview

webview-ui/src/components/settings/ContextManagementSettings.tsx

webview-ui/src/context/ExtensionStateContext.tsx

Resolve a mutation gap

Add or strengthen a focused test that fails under the mutation. If the mutant is equivalent, request maintainer approval for the narrowest mutator-specific exclusion and explain why it cannot change behavior:

// Stryker disable next-line ConditionalExpression: normalized input cannot reach the alternate branch
const result = condition ? value : fallback

Broad all exclusions and exclusions without a concrete reason are reported as advisories.

Reproduce locally

From a full checkout containing both commits:

pnpm install --frozen-lockfile
node scripts/stryker-diff.mjs ci --base f48943cb54e30574f7fda9c15882196f8cd65130 --head 6af0626f6fd99c0b5dac5a761e746d1c53333db0

Mutation reports

• types: reports/mutation/types/mutation.html
• extension: reports/mutation/extension/mutation.html
• webview: reports/mutation/webview/mutation.html

The workflow uploads generated reports in the changed-code-mutation-report artifact. A direct artifact link appears below after upload.

Advisory findings

• src/core/task/Task.ts:4422: mutation exclusions must use "// Stryker disable next-line MutatorName: concrete reason"; broad or unreasoned exclusions are not allowed.