fix: remove unused imports and fix logger test isolation

- Remove unused imports (run, trackDuration, PerformanceTracker,
  ConfigManager, disconnectDb) flagged by ESLint
- Remove unused isSlow variable in performance-monitor catch block
- Add eslint-disable for require() in Playwright JS script
- Fix logger-performance test flakiness by using vi.resetModules()
  with dynamic imports to prevent cached logger references across
  test files

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

src/main/services/database/discrete-material-plan-dao.ts

@@ -10,7 +10,7 @@
 
 import { create, type IDatabaseService } from './index'
 import { createDialect, type SqlDialect } from './dialects'
-import { createLogger, run, getRequestId, trackDuration } from '../logger'
+import { createLogger, getRequestId, trackDuration } from '../logger'
 
 const log = createLogger('DiscreteMaterialPlanDAO')