Validate local capabilities

[jspahrsummers]

Ensure that the capabilities that the local client or server is configured with cover:

1. Notifications that are sent at runtime
2. Any request handlers that are added

See modelcontextprotocol/typescript-sdk#52 for the TS equivalent.

[maxisbey]

Thanks for the report. The v2 rework changed the code this targets, so it no longer applies as-is. Closing as part of a general backlog cleanup following the v2 release. If this is still relevant against v2, feel free to reopen.

_{AI Disclaimer}