@exhaustive on inline fragment

[zth]

Note

Enable @exhaustive/@nonExhaustive on inline fragments with full validation, new error messaging, parent-type tracking, and comprehensive tests.

• Schema:
  • Extend @exhaustive and @nonExhaustive directives to INLINE_FRAGMENT in compiler/crates/relay-schema/src/relay-extensions.graphql.
• Validation:
  • Add inline fragment exhaustive validation (validate_exhaustive_inline_fragment) with selection checks and parent_type context propagation across operations, fields, fragments, and inline fragments.
  • Introduce MissingExhaustiveMembersOnInlineFragment error and broaden non-union/interface error message to include inline fragments.
  • Helpers to detect object coverage within inline fragments.
• Tests:
  • New fixtures for inline fragment exhaustive coverage (valid, missing member, alias, auto-type missing) and hook into auto-exhaustive types for inline-fragment cases.
  • Update expected message for directive-on-non-union to mention inline fragments.
  • Register new tests in validate_exhaustive_directive_test.rs.

^{Written by Cursor Bugbot for commit f1ac3d5. This will update automatically on new commits. Configure here.}