Slash-command list does not pick up newly added .claude/commands skills until full app restart (Windows desktop)

Environment: Claude Code desktop app, Windows 10 Pro, latest version as of 2026-07-13.

Steps to reproduce:

1. During a session, create a new skill file in .claude/commands/<name>.md (either the agent writes it or it is created externally, e.g. synced from another machine).
2. Type / in the input box.

Observed: the new command is not in the slash list. It also does not appear after starting a new conversation. The only thing that makes it appear is a full app restart (I ended up killing the process in Task Manager).

Expected: the slash list rescans .claude/commands at conversation start, or a file watcher / manual refresh picks new files up without an app restart.

Note: the agent side is fine: the Skill tool sees the newly created skill immediately in the same session. The gap is only the UI slash-command list.