See and restore old patterns

Idea given there: https://miaou.dystroy.org/3490?broot#16289504

It should be possible (ergonomics to study) to see the recent patterns and put one of them in the input

Read the linked idea first, then inspect how broot currently handles the input and any recent patterns. No files or tests are named in the issue, so locating the relevant entry points and deciding the ergonomics are part of the work. Done means recent patterns can be viewed and one can be restored into the input.

Written by the indexing model from the issue text.