Partial cherry-pick of PR #94901 (joe-rodgers). Surviving scope:
- api/sessions: stampActiveConnectionOwner — rows returned by the
active non-local gateway are stamped with its registry connection_id
(explicit owners from multi-source responses preserved), so a later
resume cannot fall back to a same-named local profile.
- store/projects: one-shot projects.tree retry when a remote source
switch leaves the first read RPC on a newly-opened socket without a
response (request timed out / gateway connection closed), only while
the same gateway/profile is still foreground. Component fix for the
live-confirmed #92352 sidebar-never-paints gap.
Dropped scope (superseded on main / by the #94656 anchor landed just
below): knownSessionOwner+SessionOwnerScope rewiring in session.ts,
session-states.ts, wiring.tsx (main and #94656 carry richer variants),
and the $connection-derived optimistic-row stamp in
use-session-actions/utils.ts (#94656 stamps the optimistic row from
the captured exact owner route instead of ambient state).
Original-PR: #94901
Dropped-scope: routing half of 2cb5bdbf1 (session.ts, session-states.ts, wiring.tsx, use-session-actions/utils.ts hunks)
fb393ee08b