了解到chunky trim world square 0 0 0 0 outside 0 可以删除玩家未加载过的区块，能否升级为玩家从未修改过的区块类似于”No Unused Chunks”，但我从未找到一个有类似功能的plugin

它已经做到了这一点。请参阅wiki了解更多信息。

这使用了区块的“InhabitedTime”值，您可以在此处阅读。如果值为 0，则表示玩家从未进入过该区块，并且该区块从未被玩家修改过。

It already does this. Please see the wiki for more information.

This uses the "InhabitedTime" value of the chunks which you can read about here. If the value is 0 then a player has never been in that chunk, and it has never been modified by a player.

但是玩家停留在了那个区块，但什么方块都没破坏，InhabitedTime也会增加，这样这个区块就不会被删除

It already does this. Please see the wiki for more information.

This uses the "InhabitedTime" value of the chunks which you can read about here. If the value is 0 then a player has never been in that chunk, and it has never been modified by a player.

Yes that is how that works and is intended. There isn't a way to detect if a player has placed a block or not. That is not within scope for Chunky to check. This works as intended.