A6's request: the ledger's apply names the call it serves (ADR 0597 §7) so the runtime stamps the caller it proved as
the operation's author; the id is read from the call's _meta under mesh/call, never from the arguments.
Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig
The runtime names the caller it took from the subject a call arrived on in the
call's _meta; stdio.CallerOf(args) hands it to the tool. Never read from the
arguments, and Unproven when the runtime named none, so a bundle on an older
runtime still says, explicitly, that its caller was not proven.
jschoubben