Check if API spec matches the actual API shape

Build a plugin that connects to API Center and for each intercepted request, checks if the request and response shape matches the spec. The plugin stores the results in the API Center validation result corresponding to the API.

This feature helps customers ensure that their specs match their APIs and detect any discrepancies early.

Start by examining the existing plugin architecture and request-interception flow, then determine how API Center identifies APIs and stores validation results. The work is complete when the plugin checks intercepted request and response shapes against the corresponding API spec and records the results in API Center.

Written by the indexing model from the issue text.