alonso.torres ef3f146ca0 🐛 Revert whole user actions in a rollback ...

A rollback reverts whole undo groups, across files and saves, so that
no user action is left half done. Some actions still split:

- An action that commits several times inside one undo transaction
  (e.g. applying a token to several shapes) gave each commit its own
  group, so a rejection could revert part of it: shapes ended up linked
  to a token whose value was never applied. An undo transaction now
  opens with a commit group that every commit made inside it takes.
- The commit that undoes saved commits of a rejected action joined an
  open transaction's group, so a later rejection there reverted the
  undo too. It gets a group of its own.
- Emptying the open transaction during a rollback dropped its group, so
  its later commits were no longer one unit. It keeps its group.
- Waiting for a save ended as soon as the queue emptied, while later
  commits could still wait in the buffer. Waiters now also wait for an
  empty buffer.

A test covers a token action of three commits in one save whose third
commit is rejected.

2026-10-29 09:56:03 +01:00

..

frontend_tests

🐛 Revert whole user actions in a rollback

2026-10-29 09:56:03 +01:00