New Features * #3561971 Create validator for structured content Bugs * #3579088 Guardrail plugins only evaluate the last message * #3586589 Do not assume action definitions have a type when deriving action plugin functions * #3586599 Tests are failing for phpstan * #3582473 Tool Explorer does not render correctly with Gin dark theme * #3579979 Tools UI overview page does not load * #3582474 MDX Editor does not render correctly with Gin dark theme Contributors: abhisekmazumdar, ahmad khader, ajv009, arianraeesi, a.dmitriiev, marcus_johansson, akhil babu, joshua1234511, harivansh, scott falconer, jibran, fago, dmundra, rszrama, rajab natshah, shubham.prakash, prabha1997, scott_euser, sapnil_biswas