STDIO MCP servers read from stdin and exit on EOF. Docker containers close
stdin by default, causing all STDIO servers to crash immediately. Added
OpenStdin: true to container creation.
Describe instance now resolves server names (like logs command), preferring
RUNNING instances. Added 7 new describe tests covering server name resolution,
healthcheck display, events section, and template detail.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>