What
A session is one conversation with Claude Code. Permission rules for a session are stored under sessionPermissionRules. They now accept an optional addDirs list, which sits alongside the existing allow and deny lists.
Why
In practice, extra directories (folders) can now be recorded in the same place as a session's allow and deny rules.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say how `addDirs` gets filled in or what effect the listed directories have.