Update Bot Controller Config

Update a controller configuration for a specific bot instance.

Merges the provided configuration values with the existing configuration for the specified controller on the bot. Only the fields provided in the request body are updated; existing fields not included in the request are preserved.

Use this endpoint to modify controller parameters on a running bot, such as adjusting position sizes, spread parameters, or other trading settings.

Note: Changes take effect based on the bot's configuration reload behavior. Some changes may require the controller to be restarted to take effect.