Introduce the ability to switch users from the Command Palette

[johnbillion]

No description provided.

[Copilot]

Pull request overview

Adds Command Palette integration so users can search for and switch into another account, switch back, or switch off directly from the WordPress Command Palette. The integration is implemented by registering a new REST field that exposes a switch-to URL per user, enqueueing a new browser script that registers static commands (switch back / switch off) and a dynamic command loader (switch to user) against wp.commands.store, and updating documentation and PHPCS config.

Changes:

• Register user_switching_url REST field on the user object, gated by current_user_can( 'switch_to_user', $user_id ).
• Enqueue and localize a new js/command-palette.js from admin_enqueue_scripts that wires switch back, switch off, and a debounced user search into the Command Palette.
• Update the README FAQ to describe Command Palette support and restrict PHPCS scanning to .php files.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
user-switching.php	Adds action_rest_api_init (REST field) and action_enqueue_command_palette_script hooks plus their hook registrations.
js/command-palette.js	New script registering switch-back/off commands and a dynamic user-search command loader.
readme.txt	Replaces the third-party admin-bar add-on FAQ with a Command Palette description.
phpcs.xml.dist	Restricts PHPCS scanning to PHP files.

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