Descrizione
Salesforce REST API hi-level con OAuth2 refresh handling. Operations: query (SOQL), create, update, upsert (by externalId), delete, get. Credentials da integration vault con OAuth2 (refresh-token flow). Use case: lead from web form a Salesforce Lead, opportunity update post-pagamento, contact sync da CRM, reporting SOQL custom. Auto-refresh access_token su 401 (1 retry). Sandbox/prod via instanceUrl. API docs: developer.salesforce.com/docs/atlas.en-us.api_rest.meta/api_rest/.
