[Feature Request] Add ability to remove/uninstall individual plugins via /plugin command

Preflight Checklist

• [x] I have searched existing issues and this is not a duplicate
• [x] This is a single, focused feature request

Problem Statement

The /plugin command currently allows installing plugins but provides no way to remove or uninstall an individual plugin. Once a plugin is installed, the only removal path is to manually edit settings.json or remove the entire marketplace (which silently uninstalls all plugins from that source — see #61255).

Proposed Solution

Add a remove / uninstall action to the /plugin TUI or command, e.g.:

/plugin remove <plugin-name>

This would uninstall only the selected plugin and remove it from enabledPlugins in settings.json, without affecting other plugins from the same marketplace.

Priority

Medium

Feature Category

CLI commands

Alternative Solutions

Manually editing settings.json to remove the entry from enabledPlugins — but this is error-prone and not discoverable from the CLI.

Use Case Example

1. User installs plugin foo via /plugin
2. User no longer needs foo and wants to remove it
3. Currently: must locate and hand-edit settings.json
4. Expected: /plugin → select foo → "Remove" action, or claude plugin remove foo