After merging #12596, we now have duplicated scope error handling logic in two places:

1. api/client.go — GenerateScopeErrorForGQL + requiredScopesFromServerMessage (handles all GraphQL calls globally)
2. pkg/cmd/project/shared/queries/queries.go — handleError + requiredScopesFromServerMessage (handles project queries specifically)

Both parse the same INSUFFICIENT_SCOPES error messages and generate the same gh auth refresh -s suggestion. The existing code already has a TODO noting this: // TODO: this duplicates parts of generateScopesSuggestion.

We should consolidate this into a single implementation in api/client.go and have queries.go call it.