/plugins Discover hides plugins installed at project scope in other projects

[3amyatin]

Description

Plugins installed at project scope in one repository are hidden from the Discover section when working in a different repository, even though they're not installed there.

Steps to Reproduce

1. Install a plugin at project scope in Project A:

   /plugins install frontend-design@claude-plugins-official
   # Choose "project" scope
   

2. Open Claude Code in Project B (different repository)

3. Run /plugins and look at the Discover section

4. The plugin installed in Project A does not appear in Discover for Project B

Expected Behavior

Discover should show plugins that are not installed in the current project, regardless of installation status in other projects. Project-scoped plugins are intentionally isolated per-project.

Actual Behavior

Discover filters out any plugin present in ~/.claude/plugins/installed_plugins.json, regardless of scope or projectPath. Once a plugin is installed anywhere, it disappears from Discover everywhere.

Evidence

installed_plugins.json shows the plugin with project scope for a different path:

"frontend-design@claude-plugins-official": [
  {
    "scope": "project",
    "projectPath": "/path/to/project-a",
    ...
  }
]

When in /path/to/project-b, this plugin should appear in Discover but doesn't.

Workaround

Install directly via command:

/plugins install frontend-design@claude-plugins-official

Environment

• Claude Code CLI (latest)
• macOS

[github-actions]

Found 3 possible duplicate issues:

1. Project-scoped plugins: install command fails for new projects, Discovery tab incorrectly hides plugin #14185
2. Bug: Project-scoped plugins incorrectly detected as installed globally #14202
3. [BUG] Plugin marketplace shows 'installed' for project-scoped plugins from other projects #18322

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
• To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #14185.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.