meta-matrix-conditional-evaluation

Conditional directive validation works by enforcing preprocessor expectations and sentinel semantics within a matrix-based testing framework, documenting both negative and positive cases across retired IF_EXISTS directives and lean IF chains.

Retired IF_EXISTS directives represent historical empty-substitution behavior, whereas post-amendment sentinel forms enforce updated sentinel semantics and session metadata emission, both validated through comprehensive matrix testing for forensic reproducibility.

Forensic-ready documentation is generated by recording matrix testing outcomes and edge cases during conditional substitution evaluation, enabling reproducible investigations of directive behavior across retired and post-amendment forms.

Yes, the matrix testing framework validates lean IF chains in Claude Code by applying sentinel semantics and emitting model metadata, covering both negative and positive substitution cases.

Historical no-op substitutions may fail if preprocessor expectations or sentinel semantics are not met; the matrix testing framework identifies these edge cases by validating retired and post-amendment directive forms.