fix(test): improve test isolation and reduce noise in unit tests

- Add logger/error-utils mocks to cleaner-handler test to suppress IPC error log noise
- Move setupServiceMocks into beforeEach for consistent default mocking in cleaner tests
- Replace vi.waitFor (2s timeout) with setImmediate microtask flush in extractor test
- Remove dead activeType assignments in validation-database test
- Align TestUser.id type with UserInfo.id (string → number) and use deterministic counter

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/fixtures/user-factory.test.ts

@@ -2,17 +2,22 @@
  * UserFactory Unit Tests
  */
 
-import { describe, it, expect } from 'vitest'
+import { describe, it, expect, beforeEach } from 'vitest'
 import { UserFactory } from './factory'
 
 describe('UserFactory', () => {
+  beforeEach(() => {
+    // Reset ID counter to ensure test isolation
+    ;(UserFactory as any).idCounter = 0
+  })
+
   it('creates user with default role', () => {
     const user = UserFactory.createUser()
 
     expect(user.username).toMatch(/^test_user_\d+$/)
     expect(user.userType).toBe('User')
     expect(user.permissions).toEqual(['read', 'write'])
-    expect(user.id).toMatch(/^USR-\d+-[a-z0-9]+$/)
+    expect(user.id).toBeTypeOf('number')
   })
 
   it('creates admin with correct permissions', () => {
@@ -20,7 +25,7 @@ describe('UserFactory', () => {
 
     expect(admin.userType).toBe('Admin')
     expect(admin.permissions).toEqual(['read', 'write', 'delete', 'admin'])
-    expect(admin.id).toMatch(/^USR-\d+-[a-z0-9]+$/)
+    expect(admin.id).toBeTypeOf('number')
   })
 
   it('generates unique IDs', () => {