The trailing disabled="@Busy" overrode the splatted attribute, so a caller's
disabled was dropped whenever Busy was false and the button stayed clickable.
The effective state is now Busy || caller disabled (Blazor splat semantics).
- tests: caller disabled (true/"disabled"/""), false, and re-render toggle
- Directory.Build.props 0.5.0 -> 0.5.1 (NOT packed or published)
- code-reviews: Theme-007 Resolved; README regenerated
Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV