plugins/remote/host mounts each plugin folder's MCP server at /<id>/mcp and
answers /health; without proprietary/ it serves only the Apache-2.0 plugins.
A plugin's access hook runs before its server sees a request, and
proprietary/license_check applies contract 2 with Keygen's validate-key: a
five-minute cache, a day's grace while Keygen is down, and 401, 403 or 503
otherwise. The check is license_check/, since license/ beside LICENSE is one
path on macOS and Windows. CI checks plugins/remote/ on its own.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
