Moving the real window made the client re-lay out every item button,
texture and cooldown model on each mouse movement, freezing the game for
seconds with the Bags and Bank open (profiling showed almost no Lua time
during the freezes). A single empty outline frame now follows the mouse,
and the window is moved once on drop. Clicking the outline finishes a
move whose drop was missed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019W3rwt5PZSpEDkXYzRuRhH
OEVGandClaude Opus 5.5
aee35a3c8f