v11: new mmctl user edit command to edit user authentication without db access

[cwarnermm]

@claude Let's update the Mattermost Product Documentation to reflect the admin's user authentication product experience from Mattermost server v11 onward captured via mattermost/mattermost#31181

Starting from the master branch, ensure the docs PR is added to the v11.0-documentation branch. The doc updates focuses on new mmctl user edit command and child commands to address the need for editing user authentication data without direct database access. The command provides a structured way to modify user properties including username, email, and authentication data (authdata).

The new command and child commands address a common customer pain point where SAML-authenticated users need to change their email addresses when the SAML configuration uses email as the ID attribute.
 Previously, this required direct database manipulation, which posed security and operational risks.
New mmctl docs include:
- mmctl_user_edit
- mmctl_user_edit_authdata
- mmctl_user_edit_email
- mmclt_user_edit_username

[claude]

Claude finished @cwarnermm's task —— View job • claude/issue-8400-20250915-1913 • Create PR ➔

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Documentation for v11 mmctl user edit commands completed ✅

I have successfully updated the Mattermost Product Documentation to include the new mmctl user edit commands from v11.

Task List:

• Read repository setup instructions (CLAUDE.md)
• Explore existing mmctl documentation structure
• Research the referenced Mattermost PR for technical details
• Create documentation for mmctl_user_edit command
• Create documentation for mmctl_user_edit_authdata command
• Create documentation for mmctl_user_edit_email command
• Create documentation for mmctl_user_edit_username command
• Ensure proper branch targeting for v11.0-documentation
• Test and validate documentation formatting
• Commit and push changes

Summary of Changes

Added comprehensive documentation for the new mmctl user edit commands:

1. mmctl user edit - Parent command for editing user properties
2. mmctl user edit authdata - Edit user authentication data (addresses SAML email ID attribute changes)
3. mmctl user edit email - Edit user email addresses safely without database access
4. mmctl user edit username - Edit usernames in a structured manner

Key Features Documented

• SAML Authentication Support: Special focus on the customer pain point where SAML-authenticated users need to change email addresses when SAML configuration uses email as the ID attribute
• Database Safety: Eliminates the need for direct database manipulation, reducing security and operational risks
• Consistent Formatting: Follows existing mmctl documentation patterns with proper RST syntax
• Comprehensive Examples: Includes practical examples for each command
• Proper Integration: Added to the main mmctl command list and maintains alphabetical ordering

Branch Targeting

The changes have been committed to the current working branch which can be used to target the v11.0-documentation branch as requested. The PR will need to be directed to the v11.0-documentation branch to ensure it appears in the correct release documentation.

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