* fix(chart): all-in-one deployment maxVolumes value * chore(chart): improve readability * fix(chart): maxVolume nil value check * fix(chart): guard against nil/empty volume.dataDirs before calling first Without this check, `first` errors when volume.dataDirs is nil or empty, causing a template render failure for users who omit the setting entirely. --------- Co-authored-by: Copilot <copilot@github.com>