Added

• Configurable time format: new display.time-format section in config.yml.
  • pattern (default "{days}d {hours}h {minutes}m {seconds}s") - customize the token layout used for the {formatted} placeholder and %ezcountdown_<name>_formatted% PAPI expansion.
  • hide-leading-zeros (default true) - when enabled, leading space-delimited segments whose unit value is zero are suppressed. For example, 0d 0h 5m 3s is displayed as 5m 3s.
  • Applies to countdown display messages, discord webhook {time_left}, PlaceholderAPI, and the GUI preview action.
  • Hot-reloads with /countdown reload.