Salvage of #94192's unique work (owner-hardening portions that overlap
the class-1 branch — #94824/#93451 seams — and out-of-cluster #94864 are
intentionally excluded):
- use-gateway-request: recognize the full transport-error family
(ECONNRESET & friends, including error.code and error.cause.code) so a
reset SSH/remote socket triggers the connection-owned reconnect instead
of surfacing as a request failure; background profiles keep the
registry reconnect path for composite remote/SSH sources.
- session-tile-actions: tile attachment uploads and session RPCs follow
the tile's composite owner (connectionId+profile) even when the active
gateway moved to a same-named profile on another source.
- knownSessionOwner: sessions expose their complete owner (registry
connection + profile) instead of a bare profile name that silently
collapsed the route back to the local path; delegate/wiring resolve
owners through it.
Fixes the SSH-reconnect share of #91365-adjacent routing gaps.
Salvaged (partial) from #94192.
tachi
317ae240fb