- Add requireAuth to GET /api/webhook/config to enforce authentication
- Add SOFARR_BASE_URL and SOFARR_WEBHOOK_SECRET validation to POST /api/ombi/webhook/enable and /test
- Return 400 with descriptive errors when webhook config is missing on Ombi routes
- Clean up test environment in webhook.test.js afterEach
- Add regression tests for all new validation logic
- Update CHANGELOG.md with security fixes