Runtime editor plugin with UE viewport-style camera controls: - ZQSD/Arrows movement (always active), E/A for up/down - LMB: pan (horizontal move + yaw), RMB: free fly look - Alt+LMB / MMB: orbit around focal point, scroll: zoom - HUD with controls help, cursor auto-hide during camera ops Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>