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>

tests/playwright/verify_report_analysis.js

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
 const { _electron: electron } = require('playwright')
 
 ;(async () => {