Hiren Kangad
303124f518
Backend: - comment_threads + comments + object_votes tables with indexes - Thread/comment CRUD endpoints with socket broadcast - Vote toggle endpoint with socket broadcast Frontend: - AnnotationStore for reactive thread/comment/vote state - FeedbackPanel with thread list, expanded view, replies, filtering - Vote toggle buttons in panel - PinOverlay for canvas pin markers + vote badges - Review Mode toggle in toolbar (comment bubble icon) - Jump-to-object from thread view - Orphaned thread detection for deleted objects - New comment creation from panel when object selected - Socket event wiring for real-time sync