coverage

Audit a Bun JSC coverage report (lcov.info) by inspecting raw `.jsc.json` dumps. Reports raw block data per probed line; the agent interprets divergences from lcov. No automatic verdicts.

Audit a coverage report (lcov) against raw V8 coverage to determine whether each uncovered entry is faithful (V8 confirms it was not executed) or suspect (V8 says it ran but the report claims it didn't — a pipeline bug). Output is a binary verdict per entry, not a roadmap of missing tests.