fix: wire triage recovery into SelfHealingManager and fix duplicate imports

- Pass recoverApprovedTriageTask and getSpecifyingTaskIds callbacks from
  TriageProcessor to SelfHealingManager in InProcessRuntime. Without these,
  approved triage tasks stuck in 'specifying' status were never recovered.
- Remove duplicate imports in ModelOnboardingModal.tsx that caused TypeScript
  errors (duplicate identifiers: useEffect, useRef, ToastType, fetchAuthStatus).
- Add mock for model-onboarding-state in App.test.tsx.

packages/engine/src/runtimes/in-process-runtime.ts

@@ -478,6 +478,8 @@ export class InProcessRuntime
         rootDir: this.config.workingDirectory,
         recoverCompletedTask: (task) => this.executor.recoverCompletedTask(task),
         getExecutingTaskIds: () => this.executor.getExecutingTaskIds(),
+        recoverApprovedTriageTask: (task) => this.triageProcessor?.recoverApprovedTask(task) ?? Promise.resolve(false),
+        getSpecifyingTaskIds: () => this.triageProcessor?.getProcessingTaskIds() ?? new Set<string>(),
       });
       this.selfHealingManager.start();
       this.stuckTaskDetector.start();