Pre-onboard config (gateway.mode, gateway.port, plugin trust) used to call
`openclaw config set` before `openclaw onboard` created the profile, causing
"Failed to set ..." errors on fresh installs (#101). All pre-onboard config is
now staged via raw JSON writes. Hidden gateway restarts inside syncBundledPlugins
are removed; one explicit restart happens after all post-onboard config, followed
by retried health probes so bootstrap no longer falsely reports "gateway closed"
while the gateway is simply finishing startup.
4436e57d9a