Problem

The gopls plugin is missing the lspServers field in .claude-plugin/marketplace.json. Claude Code reads LSP configuration from this field, not from .lsp.json files in plugin directories.

Impact

The LSP tool reports "No LSP server available for file type" for Go files even when the plugin is installed.

Solution

Add lspServers configuration to the gopls plugin entry in marketplace.json, following the pattern used by claude-plugins-official.