862f3c9745
Exposes the render delegate's available AOVs in the gear popup under a new "AOV" sub-menu. Selecting an AOV calls SetRendererAov on the engine and persists the choice per-viewport in viewport_settings.ini. Switching the render delegate resets the AOV to "color", matching stageView.py's _handleRendererChanged. Menu is greyed-out when the delegate reports no AOVs. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>