Plugin auto-reload now checks whether a file change was already loaded

Claude Code watches the files of your plugins (add-on packages that extend it) and reloads a plugin when its files change. It used to decide this only by comparing the time a file last changed.

It now keeps a stamp for each file and a stamp for the copy it has loaded, and checks whether a change was already covered by the loaded copy. It also keeps track of which plugins are behind their files and which reloads it has already tried.