docker mcp server inspect fails to find servers from custom catalogs

[null-runner]

When using custom catalogs with Docker MCP, docker mcp server inspect <server> fails with "server not found in catalog" even though:

• docker mcp catalog show <custom-catalog> correctly lists the server
• docker mcp server list shows the server as enabled
• docker mcp server enable/disable <server> works correctly

This appears to be the same issue that was fixed for enable in v0.19.0 (#138), but the fix was not applied to inspect.

Steps to Reproduce

1. Create a custom catalog with a server definition:

version: 2
name: custom-servers
displayName: Custom MCP Servers
registry:
  myserver:
    description: "My custom server"
    title: My Server
    type: server
    image: myorg/myserver:latest
    tools:
      - name: mytool

2. Import the catalog:

docker mcp catalog import ./custom-servers.yaml

3. Enable the server:

docker mcp server enable myserver
# Works: ✓ Server enabled

4. Try to inspect:

docker mcp server inspect myserver
# Fails: server "myserver" not found in catalog

Expected Behavior

docker mcp server inspect should search all registered catalogs, not just docker-mcp.

Actual Behavior

inspect only searches the official docker-mcp catalog, ignoring custom catalogs.

Impact

• Custom servers don't appear in Docker Desktop MCP Toolkit UI
• Users can't view tool details for custom servers
• Inconsistent behavior between enable (works) and inspect (fails)

Environment

• Docker Desktop: 4.x with MCP Toolkit
• docker mcp version: v0.28.0
• OS: Windows 11 + WSL2

Related Issues

• Cant enable mcp server from custom catalog #138 (fixed for enable, same issue exists for inspect)

[slimslenderslacks]

cc @cmrigney