Create a customer quote for a locksmith job using the Jobber GraphQL API

Steps

1. Register an app in Jobber's Developer Center and complete the OAuth 2.0 authorization flow to obtain an access token
2. Send all requests as POST to https://api.getjobber.com/api/graphql with Content-Type: application/json and Authorization: bearer {token}
3. Use the GraphiQL explorer under Developer Center > Manage Apps > Test in GraphiQL to inspect the current quote mutation schema before writing a client
4. Submit a GraphQL mutation to create a quote tied to a client and property record, including line items for the locksmith service
5. Read the mutation's userErrors field in the response to catch validation failures, since GraphQL returns 200 even on business-logic errors
6. Use cursor-based (Relay-style) pagination if listing existing quotes before creating a new one