Code-Generator | get overview and generate a basic label code | SQL Database library

I'm trying to generate QR code images that contain Google Maps routes. For example, I have the following Google Maps URL:

I faced with an issue that can't resolve on my own. Let's go through it step by step to point out the problem.

1. I have a mutation bookAppointment which returns an Appointment object
2. GraphQL schema says that this object should return 4 properties: id, date, specialist, client.
3. To follow the GraphQL-style the specialist and client properties should be a field level resolvers
4. To fetch this objects I need pass specialistId to the specialist field level resolver, as well as clientId to the client field level resolver.
5. At this point a problem arises.
6. The field level resolvers of client, specialist expects that root mutation returns fields like clientId and specialistId. But GraphQL syntax and types that were generated by that syntax doesn't include this props (make sense).
7. How to "extend" the return type of the resolver and its interface BookAppointmentPayload to make me and TypeScript happy?

This is my GraphQL schema

In running yarn run build I am running into the following error:

A custom scalar type named Date which is an ISO 8601 string is defined in the backend.

In the frontend "GraphQL Code Generator" (https://www.graphql-code-generator.com/) is used to generate typescript types from the schema.

The codegen.yml looks like this:

I am struggling to understand how to use Apollo Rover in conjunction with Apollo Codegen to generate my typescript types for my API's schema. I registered my schema in apollo studio, and can grab the schema into a GQL file, but it looks like codegen is not supported in the Rover CLI and so I need to use the legacy Apollo CLI. However the Apollo CLI wants schema to be fetched from a remote endpoint and not a registered schema, and wants the schema in JSON format, but Rover only fetches in .gql format.

I'm confused about how I am "supposed" to hook this up so that I can use apollo codegen with my registered schema without a bunch of manual conversion work.

GraphQL Code Generator creates this type on the top of the created TypeScript file:

so my question is does the Bytecode interpreter of Ignition convert the bytecode that was created by the bytecode-generator to machine code and execute it line by line?

because from what I've seen I don't see any sign that the bytecode interpreter actually converting the code to machine code.

it seems more like the bytecode generator generates bytecodes and the interpreter just execute it in C++(the interpreter doesn't turn the bytecode to machine code and then execute it)

So far I understand I need to build my own baseQuery. I could write graphql queries and mutations like in example here https://rtk-query-docs.netlify.app/examples/react-with-graphql, will I get full type safety for queries and mutations if I add types to query.builder like this builder.query or I must use something like this https://www.graphql-code-generator.com/docs/plugins/typescript-graphql-request#simple-request-middleware. In latter case how should my baseQuery look if I use generated hook for graphql-request library.

Here is example of hook from 2:

I have a Gatsby page component and try to query some data from GraphCMS. I added the page component inside a folder: