ctx.config (PluginConfigStore) is a persistent key-value store namespaced to your plugin. All methods are async, and values survive shell restarts.
config.get() is async in the background context. In the UI context (via usePluginContext()), it’s synchronous.
When to use it: store small amounts of plugin state that must outlive a restart — sync cursors, cached metadata, user-set preferences. For larger or relational data, reach for ctx.database instead.