io-cgn

Guides migration of Azure Functions apps from deprecated v3 model (Express-based, per-function index.ts + function.json) to the v4 programming model using wrapHandlerV4 from @pagopa/io-functions-commons. Covers HTTP triggers, Durable Functions (orchestrators + activities), Queue triggers, CosmosDB change feed triggers, Blob triggers, and handler-kit queue functions. Use when asked to upgrade Azure Functions, migrate from v3 to v4, replace wrapRequestHandler with wrapHandlerV4, remove function.json and index.ts per-function files, or create a single main.ts entry point.