From the first store mutation run (324 caught of 396 viable):
- receive_payment and pay_bill repeated the engine's refusals by hand
after rehearsing the engine itself, so those checks could never fire
(their mutants survived). Removed: the rehearsal is the check.
- New hand-computed tests: a disposal's final catch-up after some
depreciation was posted (200 of 300, gain 100); a disposal on the
purchase date (allowed) or the day before (refused); a retained
earnings close with a sweep replays it; a float inside an array is
refused; the viewer's journal and head hash.
- The concurrency test's reader stops when the writer thread ends, not
only when it says it's done, so a mutant that kills the writer fails
the test at once instead of spinning to the five-minute timeout.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GWVo7x3UHw5kwCUaWxiejX
swaitsandClaude Opus 5.5
309572fc65