…dia Hackathon 2026: [PARTICIPANT] Wikimedia-Hackathon-2026 Sat, Apr 25, 2:42 PM T424427 Rich Attributes Phase 3 Alternative 3c: implicit schema via attribute registry Parsoid Essential-Work Content-Transform-Team Patch-For-Review Sat, Apr 25, 2:15 PM Assigned: cscott T424426 Impr…