onServerLoad

Plugin gate, standing in for the mod path's MixinDedicatedServer#initServer RETURN — fired right after enablePlugins(POSTWORLD), so every plugin's onEnable has returned and the urls it attached to its own loader are on it (see ReplBridge.pluginsLatch). MONITOR is the last priority BUCKET, not last outright: order within it is registration order, and nothing bounds a plugin that attaches later still.