Changes:
- Removed all migration code from server.js
- Database schema fixed directly via MySQL:
* Dropped users.role column (SSO only)
* Dropped users.password column (SSO only)
* Added executions.started_by column
* Added workflows.created_by column
* All tables now match expected schema
- Server startup will be faster without migrations
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
