You'll notice
Typing a slash command now waits for a pending command-list refresh before saying 'Unknown command'
What
When you type a slash command that isn't found in the currently loaded list of commands, Claude Code will now, in some cases, wait (showing a spinner) for an in-progress command-list refresh to finish and try the lookup again, instead of immediately reporting "Unknown command".
Why
This avoids a false "Unknown command" error for a command that does exist but hasn't finished loading yet, such as right after commands are added or synced.