SourceGit 2026.10 aflaai

What's Changed
- Auto-select branch for Branch Selector control in custom action.
- Fix the issue that app may crashes when user are trying to close a repository with an action that is still running.
- Add Use button back to apply AI generated message.
- Add a context menu entry Enable Auto-Fetch to selected remote which allows user to disable some remotes from auto-fetching.
- Note: this context menu item is visible only when user has enabled the Fetch remotes automatically feature in Preferences.
- Fix the issue that Askpass does not support non-ASCII characters.
- Fix the issue that Initialize Repository does not apply bookmark from Open Repository popup.
- Fix the issue that sometimes user settings are lost because the configuration file is broken.
- Disable thinking mode in AI assistant.
- Linux: Fix the issue that some linux distros have a newer version of libicu which is a dependency of this app.
- Fix the issue that sometimes NullReferenceException occurs.
- Supports to preview PSD as image.
- Shows the git source revision when compiling this project in About dialog.
- Fix the issue that fixup!/squash! commits' positions sometimes are incorrect.
- Change the DateSeparator and TimeSeparator to prevent / or : being replaced by culture in DateTime.ToString().
- Keep selection in HISTORY page if user only selected one or two commits.
- Thanks to @gadfly3173, we have anothor deb package repository.
- Several other UI/UX changes.

New Contributors
- @Zguy made their first contribution in #2304
- @Nietod made their first contribution in #2307