Returns a specification to start this module under a supervisor.

See Supervisor.

Returns retained exact plugin-wait retirement evidence, or unknown_outcome.

Observe an already acknowledged immutable host request in the actual effect caller.

The callback may only wait for that request. It must not install, dispatch MCP, or start untracked work. Registration precedes the callback; cancellation seals completion and observes the registered caller's termination, not remote rollback.

Runs one caller-owned MCP resource request with cooperative local cancellation.

The starter must only start that resource request in the calling process. It returns the public MCP result for the adapter's usual result/error conversion. Additional untracked adapter effects cannot be confirmed by this helper.