View Distance Control

Added

• New afk-distance-delay config option (default: 5) delays AFK view distance reduction by a configurable number of seconds after a player goes AFK. Set to 0 for the previous immediate behaviour.
• New console-log config option (default: false) logs view distance changes to the server console.
• New /vdc list command shows every online player's current view distance at once.

Changed

• /vdc check <player> renamed to /vdc get <player>; the associated permission node is renamed from viewdistancecontrol.check to viewdistancecontrol.get.
• /vdc get (and /vdc list) now show (pending AFK) while the AFK delay is counting down, so the real AFK state is visible immediately even before the view distance switches.
• View distance is now only set on the player when the value actually changes; notifications and console logs are suppressed for no-op updates.