covcat - LLM-native coverage-annotated file viewer. Use when the user wants to see code coverage information inline with source code, identify test gaps, analyze uncovered branches, or generate tests for uncovered paths. Renders files in LNCAF (LLM-Native Coverage Annotation Format) with gutter markers showing covered (|), uncovered (.), partial branch (?), and function entry ([FN+]/[FN-]) annotations.
2026-04-01