Session::grouped saved only the undo stack's length, so a failed group could drop the entries it
added but not bring back the ones an edit.undo inside it popped. It now keeps each document's undo
entries on entry, as it already did for redo, and restores them when the group fails.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Co-Authored-By: GPT-6.1 Sol <noreply@openai.com>
Co-Authored-By: GPT-6 Astra <noreply@openai.com>
* Agent Host changes for agents/fix-command-batch-history-restore
* Implement centralized transactional fix for command batch failures - #1
* The batch rollback tests compile, are formatted and expect the tab that was in front
The new module used a private helper of plugins_tests and an unused import; the plugin test
asserted tab 0 was in front, but it opens a second file first, which is the one in front
when the plugin starts and the one the rollback puts back.
---------
Co-authored-by: bflatastic <bombayapirat@gmail.com>
