Fix Mission Control clicks on other desktops

Fix MissionControlSend Shift-clicks that only focused a window on another desktop. macOS can report an invisible thumbnail from a different desktop under the pointer; the Spoon now resolves the sole visible thumbnail on the active desktop while rejecting ambiguous overlaps.

Verified a physical Shift-click moving Claude from Desktop 2 to Desktop 1. Regression checks cover the hidden-thumbnail case, wraparound, overlapping thumbnails, and unrelated displays/processes. All Lua checks and the ZIP privacy audit passed.

Includes all seven current Spoon packages. AirPodsMeet’s voice clips retain their separate noncommercial attribution terms.