- Show revoked devices in collapsible section with strikethrough styling
- Fetch revoked.json via new list_revoked message + router case
- Registration flow uses register_device WASM API (private keys internal)
- Display revoked_by and timestamp for each revoked entry
- Update setup wizard to use new register_device API
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>