- Move Docker healthcheck from Dockerfile to docker-compose files for better
environment-specific configuration
- Add silent flag to healthcheck curl commands to reduce log noise
- Add error handling for missing link_templates table in client view
- Improve offline sync date formatting with ISO 8601 conversion helper
- Enhance error handlers and profile edit template
This improves robustness when migrations haven't been run and provides
better date handling in offline sync scenarios.
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