5a1d5d6a49
After renaming the mesh display name on the server, the launch
picker still showed the slug ("flexicar-2") because (a) local
config.json was not updated and (b) the picker only printed
mesh.slug. Now: rename writes the new name back into config.json
on success, and the picker prints "name (slug)" when they differ.
Also surfaces a hint that slugs are immutable (today).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>