Generate workflow

1. Fetch schema
   Use the appropriate auth mode. Prefer schema.introspection.json, but schema.graphql works.
2. (Optional) Fetch resolvers
   IAM-only command. Parses endpoint → apiId/region; prompts for profile/region.
3. Build contexts
   Writes:
   • contexts/<Parent>.<field>/operation.graphql
   • contexts/<Parent>.<field>/operation.sdl.graphql
   • contexts/<Parent>.<field>/context.json (includes returnTree)
   • contexts/<Parent>.<field>/resolver/ (copied if harvested)
   • Ensures contexts/_shared/pytest/ scaffold (graphql_client.py, conftest_shared.py)
4. Generate test plans
   LLM produces plan.json. We validate scenario GQL against pruned SDL; invalid is replaced with canonical op doc and annotated.
5. Materialize tests
   Writes runnable tests (Pytest/Jest) into the configured output root.

Not seeing deep fields in returnTree? Bump:

• selectionDepth
• maxFieldsPerLevel
• returnTreeDepth
• returnTreeMaxFields