fix(server): a link card's id names the provider session that asked

A later provider session in the same thread reusing a clientRequestId got
the earlier session's card back, even for another machine. The card id now
includes the caller's request namespace, as the command id already did.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
26651fa6daJulius Marminge committed on 10/20/2026, 11:06:41 PMparentc961f17
2 files changedLine totals unavailable