Chart legend click interactions and localStorage persistence
New Features
- Click legend items to hide/show individual datasets in the chart
- Hidden chart preferences are now saved to browser localStorage
- Preferences survive page reloads and are tracked independently per view mode (Overview vs All datasets)
What's Included
- Merged PR #6: Preserve hidden graph labels across polling updates
- localStorage persistence for chart state
- Independent hidden state tracking per chart view mode
How to Update
- Git clone: Run 'git pull origin master'
- Docker: Pull latest image and redeploy
- Systemd: Run 'git pull' and restart the service