fn PersistRecentlyOpened(Added: &[WorkspaceFolderStateDTO])Expand description
Append every folder in Added to
~/.fiddee/workspaces/RecentlyOpened.json, deduping by URI and capping at
50 entries (the VS Code default). Swallows every error - a failed write
must not prevent the workspace change. The dotfile root is resolved
through the FiddeeRoot atom so a future rename touches a single file.