* fix guest user import when guest user doesn't have any memberships
This PR fixes an issue where a guest user without channel or team memberships
is not being imported and the importer will then throw an error and abort.
Key changes:
1. Updated validateGuestRoles function to allow system guests without any teams/channels
2. Improved error handling with specific error messages for different validation failures
3. Updated tests to reflect new behavior allowing system guests with no team memberships
4. Added new i18n error messages for better user feedback
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
* Extract i18n strings and update English locale
- Ran 'make i18n-extract' to extract translation strings from source code
- Alphabetically sorted translation keys in server/i18n/en.json
- Moved guest user validation error messages to proper alphabetical positions
- Removed obsolete/unused translation entries for cleaner locale file
Co-authored-by: Jesse Hallam <lieut-data@users.noreply.github.com>
* Revert "Extract i18n strings and update English locale"
This reverts commit 9d3887cb2e.
* actually fix i18n, needs enterprise access
* add integration test for importing guest user without team/channel memberships
---------
Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Jesse Hallam <lieut-data@users.noreply.github.com>
Co-authored-by: Jesse Hallam <jesse@mattermost.com>
Co-authored-by: Mattermost Build <build@mattermost.com>
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