The root cause of the initial sync timeout was that connectAndRun called
initialSync (which uses Send/RPC) before starting readLoop, but Send's
response delivery depends on readLoop→routeFrame→handleResponse. Without
the readLoop running, agents.list and sessions.list would always time out.
Fix: start readLoop in a goroutine before calling initialSync so that
RPC responses are properly routed back to pending Send() calls. After
initialSync completes, event handlers are registered and MarkWSReady
is called. The connectAndRun function then blocks on the readLoop
goroutine's completion.
Also added TestConnectAndRun_InitialSyncOrdering which verifies that
agents are persisted from initial sync (would hang/timeout under the
old ordering).
rex-bot
d370d5ec23