Rename user-visible "Custom Profile Attributes" to "User Attributes"

[Combs7th]

Summary

Aligns docs prose with mattermost/mattermost#36046 (MM-68235, milestone v11.7.0): user-visible "Custom Profile Attributes" is now "User Attributes".

• Updated user-facing English in three pages:
  • source/administration-guide/manage/admin/user-attributes.rst
  • source/administration-guide/configure/system-attributes.rst
  • source/administration-guide/manage/mmctl-command-line-tool.rst (descriptions/headings only)
• Preserved internal identifiers (per PR evidence): mmctl cpa command syntax, API paths, JSON field names, audit event names (createCPAField, deleteCPAField, patchCPAField, patchCPAValues), WebSocket events, and i18n message keys.
• No changelog / upgrade-notes / legacy-release pages touched.

Closes #8966.

Test plan

• Sphinx build passes
• Rendered user-attributes.html, system-attributes.html, and mmctl-command-line-tool.html pages no longer contain "Custom Profile Attribute" or "CPA field" prose
• Code blocks still show literal mmctl cpa command syntax
• SME confirms the "Unable to patch User Attribute field" error string is correct

Generated with Claude Code

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3d8ada0f-cb02-4463-ae20-6ecda201740e

📥 Commits

Reviewing files that changed from the base of the PR and between e7f9e4c and a86a138.

📒 Files selected for processing (3)

• source/administration-guide/configure/system-attributes.rst
• source/administration-guide/manage/admin/user-attributes.rst
• source/administration-guide/manage/mmctl-command-line-tool.rst

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📝 Walkthrough

Walkthrough

This PR updates terminology across documentation from "Custom Profile Attributes" to "User Attributes" in three administration guide files: system attributes configuration reference, user attributes management guide, and mmctl command-line tool documentation. All changes are documentation terminology only with no code or API modifications.

Changes

Documentation Terminology Standardization

Layer / File(s)	Summary
System attributes documentation reference source/administration-guide/configure/system-attributes.rst	System attributes section updated to refer to "User attributes" instead of "Custom attributes for user profiles" and corresponding link target.
User attributes administration guide source/administration-guide/manage/admin/user-attributes.rst	User attributes documentation updated to use consistent "User attributes" terminology in image alt text and API/automation notes, including example error string referring to user attribute field names.
mmctl command-line tool documentation source/administration-guide/manage/mmctl-command-line-tool.rst	mmctl cpa command documentation updated from "Custom Profile Attribute" to "User Attribute" terminology across command list entry, field section heading, and create/delete/edit/list child-command descriptions.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically summarizes the main change: renaming user-visible documentation references from 'Custom Profile Attributes' to 'User Attributes'.
Description check	✅ Passed	The description comprehensively explains the documentation updates across three files, the preservation of internal identifiers, and provides a clear test plan aligned with the changeset.
Linked Issues check	✅ Passed	The PR fulfills the primary objective: updating documentation references from 'Custom Profile Attributes' to 'User Attributes' across three relevant documentation pages, while preserving internal identifiers as required.
Out of Scope Changes check	✅ Passed	All changes are scoped to the stated objective of terminology updates in user-facing documentation. No changelog, upgrade notes, or other restricted documentation pages were modified.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/issue-8966-20260514-0129

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[github-actions]

Newest code from mattermost has been published to preview environment for Git SHA a86a138

[Combs7th]

@jgheithcock - Do the above doc updates look accurate to you?