Mvp ranking publish

[Nigma-Ks]

Summary

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• Ranking table — publish experiments to a persistent database and display results in a sortable ranking table (all columns)
• Publish flow — dedicated publish page with ability to run an experiment and submit it to the ranking
• Performance metrics — calculate and validate symbolic execution metrics for each experiment
• Frontend — multi-page app with Home, Experiment, Model Interface, Ranking, and Publish pages
• Experiment cancellation — users can cancel a running experiment; button disappears on completion
• Database & MinIO — backend integration for storing published results and artifacts
• Tests — unit tests for metrics, task cycle, cancellation, and email sender