Assign an ITSM Fulfiller Persona Permission Set (Prompt-Template Access)

Resolve missing ITSM Intelligence invocable actions so a Fulfiller NGA agent can activate. Reads which of the three Core Fulfiller persona permsets (IncidentFulfiller, ProblemFulfillerPermSet, ChangeRequestFulfillerPermSet) are provisioned, then assigns the running user the selected persona (plus backing PSL when license-gated) so svc_itsm_intelligence__* actions surface; hands off to service-itsm-agentic-setup-agentforce-studio-validate if none are provisioned. Use when the Fulfiller agent-configure skill reports missing actions on activate, when 'Invocable action svc_itsm_intelligence__X does not exist' surfaces, when a user asks to grant themselves Fulfiller prompt-tem…