fn last_lines(summary: &Summary) -> Vec<String>Expand description
The last training (trained.toml): what it did with the table and
why (the two tables compared on the newest messages the one in place
never saw), what the table in use learned from (again from every
message, when it replaced the other), and what the same model learned
from the oldest 80 % measured on the newest 20 %, at the two thresholds.