Produce two comparison scenarios through the existing real MCP session while retaining fresh CLI comparisons, all authored source variants and native execution oracles. Keep the capture-lifetime case as a complete CLI analysis-to-comparison journey.
Validation: 92 tests pass with identical source coverage maps and hit sets across 1,156 files. The covered two-file cohort improved locally from 40.6s to 35.4s including the Git baseline optimization. Typecheck, lint and formatting pass.