Use when users create, generate, or validate Salesforce Custom Field metadata. Trigger on custom fields, field types, Roll-Up Summary, Master-Detail/Lookup relationships, formula fields, picklists, dependent (controlling) picklists, referencing a value set from a field, or scoping picklist values per record type; also field deployment errors, including a record type that won't deploy without a business process. DO NOT TRIGGER for creating/customizing the value set itself — a new GlobalValueSet or a StandardValueSet catalog like Industry — use platform-value-set-generate; this skill covers the field that references a value set, not the value set definition.
