[ML] Sequenceness pipeline (replay detection)

- [x] Train models to detect sequence
- [x] Use different time compression factor.
- [x] Compare probabilities of target sequence vs all other possible sequence.

The issue only names a “Sequenceness pipeline (replay detection)” and three completed checklist items; it provides no files, tests, entry point, or remaining acceptance criteria. Before starting, confirm the intended unfinished work and project location; done cannot be determined from the issue as written.

Written by the indexing model from the issue text.