Build journal / Decisions and lessons
Notes
Engineering notes: things that broke, why the obvious defence failed, and what changed. Written from work that actually shipped.
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When --write and --check disagree, the formatter is the bug
Prettier had been silently corrupting code samples across 236 curriculum files for weeks, and every check passed.
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The contrast gate was checking a color I don't ship
Two ways to verify the wrong copy of a thing, found on the same day, in the same afternoon.
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Every gate was green and the animations were gone
A test suite that passed because it asserted the exact condition the failure produces.