M07-L01 exercise
Starting checkpoint: CP07. Figures: SS15-01, SS15-02, D12.
Use a fresh CP07 copy. Run the basic test wrapper and stale-recovery replay. Map startup recovery, stale equality, and nonfinite input to independent expectations and actual evidence. Submit the map, command/results, and source identity. Explain what D12 does and does not show. Preserve the starting copy; a missing compiler leaves execution open, not passed.
Record source identity, changed files, exact commands, actual outcomes, and open limitations. Preserve the original exercise copy and review the final diff. Expected results are criteria, not evidence of execution.

