Root cause of #93492: deleting a cloud/remote connection disposed its
gateways (store/gateway.ts) but never touched the persisted 'group-chats'
storage, so every member descriptor referencing the deleted connection
stayed behind as a poisoned row (remoteSource: true, connection gone) that
render-path route lookups tripped over forever.
Subscribe to the connection registry's 'removed' lifecycle push
(window.hermesDesktop.connections.onChanged, feature-detected — older
Electron mains don't emit it) and annotate every persisted group-chat
member owned by the deleted connection. Rows are marked
(sourceMissing/sourceReachable), never silently deleted: the member keeps
its identity and panes render the existing degraded 'Gateway removed'
botSourceStatus state. Writes ride updateGroupChat so the durable record
keeps its full shape, and the listener unbinds on plugin dispose.
Teknium
c509af689f