Feature Request: Display custom catalog servers in MCP Toolkit UI

[null-runner]

Description

Currently, the MCP Toolkit UI in Docker Desktop only displays servers from the official docker-mcp catalog. Servers from custom catalogs are invisible in the UI, even when properly enabled and functional.

Current Behavior

• Custom catalog servers work via CLI (docker mcp server enable/list)
• Custom catalog servers work with clients (Claude, Cursor, etc.)
• Custom catalog servers are NOT visible in Docker Desktop MCP Toolkit UI
• The "My Servers" section shows "something went wrong" or is empty

Requested Feature

1. Display servers from ALL registered catalogs in MCP Toolkit UI
2. Allow enabling/disabling custom servers from UI
3. Show server details (tools, config) for custom servers
4. Visually distinguish custom vs official servers (optional badge/icon)

Use Case

Organizations and developers create custom MCP servers for:

• Internal tools and integrations
• Specialized workflows
• Development and testing

These should be manageable through the same UI as official servers, providing a consistent user experience.

Workaround

Currently using CLI only for custom server management, which works but lacks the discoverability and ease of use of the UI.

Related

• This is likely related to docker mcp server inspect fails to find servers from custom catalogs #282 (inspect not searching custom catalogs)
• The UI may be using inspect or similar logic internally

Environment

• Docker Desktop: 4.x with MCP Toolkit
• docker mcp version: v0.28.0