- Replace individual volume mounts (playbook_cache, plugins) with single app_data:/data mount
- Change FABLEDNETMON_DATABASE__URL to FABLEDNETMON_DATABASE_URL (underscore to hyphen)
- Simplify config.example.yaml to focus on required database URL setting
- Document that other settings are now managed via the Settings UI
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>