Mirrors PyQt client which seeds doubleSpinBox_pot_temp from the remembered ambient on startup. In the browser there is no persistence, so the first AmbientTemp message from the server is used instead. Flag resets on reconnect so it re-syncs if the server restarts. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DF16nV2ispNw1C9SbvqbRQ