Server half of #91684: the desktop can answer an approval prompt with a
stale live sid — its runtime record was re-minted after a reconnect while
the prompt stayed on screen. approval.respond now falls back, on 4001
only, to resolving the target session (1) by the unique approval
request_id across every live session's pending gateway approvals, then
(2) by treating session_id as a STORED session id mapped to its live
runtime record. Only when neither resolves does it return 4001.
Tests: request_id fallback, stored-id fallback, and 4001 when nothing
resolves.
Teknium
9b3f60c029