fix(test): add afterEach hook to reset global singletons

The test 'should use default maxEvents of 10000' was timing out when run
with the full test suite but passed in isolation. Root cause: global
singleton instances (WorkerAnalytics, CrossReferenceManager, etc.)
retained state across tests in the main 'InMemoryEventStore' describe
block.

Added afterEach hook that calls all available reset* functions to
ensure clean state between tests.

Closes: bf-5u6j

src/store.test.ts

@@ -3,8 +3,18 @@
  */
 
 import { describe, it, expect, beforeEach, afterEach } from 'vitest';
-import { InMemoryEventStore, getStore, resetStore } from './store.js';
+import {
+  InMemoryEventStore,
+  getStore,
+  resetStore,
+} from './store.js';
 import { LogEvent } from './types.js';
+import { resetWorkerAnalytics } from './workerAnalytics.js';
+import { resetCrossReferenceManager } from './crossReferenceManager.js';
+import { resetHistoricalStore } from './historicalStore.js';
+import { resetErrorGroupManager } from './errorGrouping.js';
+import { resetRecoveryManager } from './tui/utils/recoveryPlaybook.js';
+import { resetCostTracker } from './tui/utils/costTracking.js';
 
 describe('InMemoryEventStore', () => {
   let store: InMemoryEventStore;
@@ -13,6 +23,16 @@ describe('InMemoryEventStore', () => {
     store = new InMemoryEventStore();
   });
 
+  afterEach(() => {
+    resetStore();
+    resetWorkerAnalytics();
+    resetCrossReferenceManager();
+    resetHistoricalStore();
+    resetErrorGroupManager();
+    resetRecoveryManager();
+    resetCostTracker();
+  });
+
   const createEvent = (overrides: Partial<LogEvent> = {}): LogEvent => ({
     ts: Date.now(),
     worker: 'w-test',