Match the SQL indent of the two edited lines in metrics.py to their
neighbours (one space too deep, which made the diff noisier than the change),
drop test_src_has_no_unexpected_hits from the tripwire (an identical copy of
test_no_iso_t_datetime_comparison misfiled under the positive controls), and
replace an em dash in a comment with ASCII.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KkCGRantZsSwmcFpet6FTa