The capabilities actually advertised on the wire: capabilities augmented
from the installed handlers when autoAdvertiseCapabilities is true.
Installing onSampling advertises sampling, onElicitation advertises
elicitation (defaulting to the form submode unless a submode is already
declared), and onListRoots advertises roots. Explicit flags already set
on capabilities are never cleared. When autoAdvertiseCapabilities is
false, capabilities is returned verbatim. Drives both the initialize
handshake and the draft per-request _meta.
The capabilities actually advertised on the wire: capabilities augmented from the installed handlers when autoAdvertiseCapabilities is true. Installing onSampling advertises sampling, onElicitation advertises elicitation (defaulting to the form submode unless a submode is already declared), and onListRoots advertises roots. Explicit flags already set on capabilities are never cleared. When autoAdvertiseCapabilities is false, capabilities is returned verbatim. Drives both the initialize handshake and the draft per-request _meta.