v0.3.5 — examples call session.connect() explicitly

Bug fix for multi-host examples after 0.3.4 lifecycle refactor. The leader/follower example scripts now call session.connect() before viewer.launch() / session.start() so the cluster becomes visible on mDNS immediately, without requiring the operator to click Record first.

Install: pip install 'syncfield[multihost,uvc,audio,viewer]==0.3.5'